[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Brad Figg]

** Tags added: cscc

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https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Fix Released

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Joseph Salisbury]

** Changed in: linux (Ubuntu)
   Status: In Progress => Fix Released

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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Fix Released

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Launchpad Bug Tracker]

This bug was fixed in the package linux - 4.4.0-78.99

---
linux (4.4.0-78.99) xenial; urgency=low

  * linux: 4.4.0-78.99 -proposed tracker (LP: #1686645)

  * Please backport fix to reference leak in cgroup blkio throttle
(LP: #1683976)
- block: fix module reference leak on put_disk() call for cgroups throttle

  * UbuntuKVM guest crashed while running I/O stress test with Ubuntu kernel
4.4.0-47-generic (LP: #1659111)
- block: Unhash block device inodes on gendisk destruction
- block: Use pointer to backing_dev_info from request_queue
- block: Dynamically allocate and refcount backing_dev_info
- block: Make blk_get_backing_dev_info() safe without open bdev
- block: Get rid of blk_get_backing_dev_info()
- block: Move bdev_unhash_inode() after invalidate_partition()
- block: Unhash also block device inode for the whole device
- block: Revalidate i_bdev reference in bd_aquire()
- block: Initialize bd_bdi on inode initialization
- block: Move bdi_unregister() to del_gendisk()
- block: Allow bdi re-registration
- bdi: Fix use-after-free in wb_congested_put()
- block: Make del_gendisk() safer for disks without queues
- block: Fix bdi assignment to bdev inode when racing with disk delete
- bdi: Mark congested->bdi as internal
- bdi: Make wb->bdi a proper reference
- bdi: Unify bdi->wb_list handling for root wb_writeback
- bdi: Shutdown writeback on all cgwbs in cgwb_bdi_destroy()
- bdi: Do not wait for cgwbs release in bdi_unregister()
- bdi: Rename cgwb_bdi_destroy() to cgwb_bdi_unregister()
- block: Fix oops in locked_inode_to_wb_and_lock_list()
- kobject: Export kobject_get_unless_zero()
- block: Fix oops scsi_disk_get()

  * Touchpad not working correctly after kernel upgrade (LP: #1662589)
- Input: ALPS - fix V8+ protocol handling (73 03 28)

  * Xenial update to v4.4.62 stable release (LP: #1683728)
- drm/i915: Avoid tweaking evaluation thresholds on Baytrail v3
- drm/i915: Stop using RP_DOWN_EI on Baytrail
- usb: dwc3: gadget: delay unmap of bounced requests
- mtd: bcm47xxpart: fix parsing first block after aligned TRX
- MIPS: Introduce irq_stack
- MIPS: Stack unwinding while on IRQ stack
- MIPS: Only change $28 to thread_info if coming from user mode
- MIPS: Switch to the irq_stack in interrupts
- MIPS: Select HAVE_IRQ_EXIT_ON_IRQ_STACK
- MIPS: IRQ Stack: Fix erroneous jal to plat_irq_dispatch
- crypto: caam - fix RNG deinstantiation error checking
- Linux 4.4.62

  * ifup service of network device stay active after driver stop (LP: #1672144)
- net: use net->count to check whether a netns is alive or not

  * [Hyper-V] mkfs regression in kernel 4.4+ (LP: #1682215)
- block: relax check on sg gap

  * [Feature] KBL: intel_powerclamp driver support (LP: #1591641)
- thermal/powerclamp: remove cpu whitelist
- thermal/powerclamp: correct cpu support check
- thermal/powerclamp: add back module device table

  * sysfs channel reads of lps22hb pressure sensor are stale (LP: #1682103)
- iio: st_pressure: initialize lps22hb bootime

  * Backlight control does not work and there are no entries in
/sys/class/backlight (LP: #1667323)
- Revert "ACPI / video: Add force_native quirk for HP Pavilion dv6"

  * [Feature] KBL: intel_rapl driver support (LP: #1591640)
- powercap/intel_rapl: Add support for Kabylake

  * Xenial update to v4.4.61 stable release (LP: #1682140)
- drm/vmwgfx: Type-check lookups of fence objects
- drm/vmwgfx: NULL pointer dereference in vmw_surface_define_ioctl()
- drm/vmwgfx: avoid calling vzalloc with a 0 size in vmw_get_cap_3d_ioctl()
- drm/ttm, drm/vmwgfx: Relax permission checking when opening surfaces
- drm/vmwgfx: Remove getparam error message
- drm/vmwgfx: fix integer overflow in vmw_surface_define_ioctl()
- sysfs: be careful of error returns from ops->show()
- staging: android: ashmem: lseek failed due to no FMODE_LSEEK.
- arm/arm64: KVM: Take mmap_sem in stage2_unmap_vm
- arm/arm64: KVM: Take mmap_sem in kvm_arch_prepare_memory_region
- iio: bmg160: reset chip when probing
- Reset TreeId to zero on SMB2 TREE_CONNECT
- ptrace: fix PTRACE_LISTEN race corrupting task->state
- ring-buffer: Fix return value check in test_ringbuffer()
- metag/usercopy: Drop unused macros
- metag/usercopy: Fix alignment error checking
- metag/usercopy: Add early abort to copy_to_user
- metag/usercopy: Zero rest of buffer from copy_from_user
- metag/usercopy: Set flags before ADDZ
- metag/usercopy: Fix src fixup in from user rapf loops
- metag/usercopy: Add missing fixups
- powerpc/mm: Add missing global TLB invalidate if cxl is active
- powerpc: Don't try to fix up misaligned load-with-reservation instructions
- nios2: reserve boot memory for device tree
- s390/decompressor: fix initrd corruption caused by bss 

[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

Please don't drop the fix from the source code!

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  Fix Committed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

The kernel in -proposed (4.4.0.78) works.

** Tags removed: verification-needed-xenial
** Tags added: verification-done-xenial

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  Fix Committed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Kleber Sacilotto de Souza]

This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
xenial' to 'verification-done-xenial'. If the problem still exists,
change the tag 'verification-needed-xenial' to 'verification-failed-
xenial'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: verification-needed-xenial

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  Fix Committed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Stefan Bader]

** Changed in: linux (Ubuntu Xenial)
   Status: In Progress => Fix Committed

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  Fix Committed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

This build is good!

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Joseph Salisbury]

The bisect reported the following commit as the first bad commit:

commit 69e236e70ead32e8cc2b84ce075dbe1319ca166b(Mainline commit 6276e53fa8c0)
Author: Hans de Goede 
Date:   Tue Nov 29 15:32:16 2016 +0100

ACPI / video: Add force_native quirk for HP Pavilion dv6

This commit was already reverted in mainline in v4.10-rc6 by commit
fd25ea2909.

However, commit 69e236e70e(Mainline commit 6276e53fa8c0) has not yet
been reverted in upstream stable 4.4.y or in Ubuntu.

I built  Xenial test kernel with this commit reverted.  The test kernel can be 
downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1667323/

Can you test that kernel and report back if it has the bug or not?

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

This build is bad.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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More help   : https://help.launchpad.net/ListHelp

[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Joseph Salisbury]

I built the next test kernel up to the commit:
69e236e70ead32e8cc2b84ce075dbe1319ca166b

This test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1667323/

Can you test that kernel and report back if it has the bug or not? I
will build the next test kernel based on your test results.

Thanks in advance

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

This kernel is good.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help   : https://help.launchpad.net/ListHelp

[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Joseph Salisbury]

I built the next test kernel up to the commit:
2c2375e40d28b3d0fd961448fd12963f66b4b452

This test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1667323/

Can you test that kernel and report back if it has the bug or not? I
will build the next test kernel based on your test results.

Thanks in advance

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

This kernel is good.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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More help   : https://help.launchpad.net/ListHelp

[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Joseph Salisbury]

I built the next test kernel up to the commit:
5283a7bedbcbdfa654c8a4d7fb314d734a56e544

This test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1667323/

Can you test that kernel and report back if it has the bug or not? I
will build the next test kernel based on your test results.

Thanks in advance

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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More help   : https://help.launchpad.net/ListHelp

[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

This kernel is good!

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

-- 
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Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help   : https://help.launchpad.net/ListHelp

[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Joseph Salisbury]

I built the next test kernel up to the commit:
e01b04be3eb00456d65278cfa56cfd8103872bfbq

This test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1667323/

Can you test that kernel and report back if it has the bug or not? I
will build the next test kernel based on your test results.

Thanks in advance

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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Post to : kernel-packages@lists.launchpad.net
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More help   : https://help.launchpad.net/ListHelp

[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

This kernel is bad too.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

-- 
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help   : https://help.launchpad.net/ListHelp

[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Joseph Salisbury]

I built the next test kernel up to the commit:
a163451c80b028d97b5224c74517dbf67ac45f2c

This test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1667323/

Can you test that kernel and report back if it has the bug or not? I
will build the next test kernel based on your test results.

Thanks in advance

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

-- 
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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Joseph Salisbury]

** Changed in: linux (Ubuntu)
 Assignee: (unassigned) => Joseph Salisbury (jsalisbury)

** Changed in: linux (Ubuntu Xenial)
 Assignee: (unassigned) => Joseph Salisbury (jsalisbury)

** Changed in: linux (Ubuntu Xenial)
   Status: Triaged => In Progress

** Changed in: linux (Ubuntu)
   Status: Triaged => In Progress

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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

Thank you for taking the time to help with this bug Joseph!

This build (/~jsalisbury/lp1667323) is bad.

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https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Xenial:
  Triaged

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Joseph Salisbury]

I started a bisect between 4.4.40 an 4.4.41.  This will require testing
about 7 - 10 test kernels.  I built the first test kernel up to the
commit:

1cc0f9488b913a798a53eb7e4a73211c4d64a24c

This test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1667323/

Can you test that kernel and report back if it has the bug or not?  I
will build the next test kernel based on your test results.

Thanks in advance

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Xenial:
  Triaged

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

Of course!

4.4.57 is bad

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Xenial:
  Triaged

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Joseph Salisbury]

Thanks for the update.  Before I start the bisect between 4.4.40 and
4.4.41, can you test the 4.4.57 kernel?  It is available from:

http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.57

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Xenial:
  Triaged

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

Unfortunately you are right. 4.4 final is good.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Xenial:
  Triaged

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Joseph Salisbury]

And can you ensure 4.4 final is bad?  It is available from:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4-wily/

If 4.4 final is bad, I can reverse bisect between 4.4 and 4.5-rc1.
However, if 4.4 final is good(Which it probably will be),  we will have
to go back to performing a standard bisect between upstream 4.4.40 and
4.4.41.

The regression came via a 4.4.41 stable update from mainline.  However,
the bug is not happening in any of the other 4.5-rc1 or greater kernels
that you tested.  It might take a lot of testing from the results posted
in comment #31 to find the commit that fixes the bug.  It might be the
regression was introduced in one of the 4.5, 4.7 or 4.9 release
candidates and fixed right away.  Although it should have came down in
newer 4.4 stable updates but 4.4.55 still has the bug also per comment
#31.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Xenial:
  Triaged

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

4.5-rc1 good

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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Xenial:
  Triaged

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Joseph Salisbury]

Can you give the 4.5-rc1 kernel a try:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.5-rc1-wily/

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Xenial:
  Triaged

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

4.9 good
4.7 good
4.5 good
4.4.55 bad (from http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.55/)

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Xenial:
  Triaged

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Joseph Salisbury]

It is probably best to perform a "Reverse" bisect instead of a standard
bisect, since we know this bug is fixed in 4.10 final.

A "Reverse" bisect will identify the commit that fixes the bug instead
of identifying the commit that introduced the bug.  We just need to do
the oppisite of a standard bisect.  We need to know the last Bad kernel
and the first Good one.


Like in comment #28, can you test the following kernels.  We are looking for 
the last bad version and the first good one:

v4.5: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.5-wily/
v4.7: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.7/
v4.9: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.9/

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Xenial:
  Triaged

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

The first kernel to has this bug is 4.4.41.

I ended up testing all of them, so:

4.4.40 good
4.4.41 bad
4.4.42 bad
4.4.43 bad
4.4.44 bad

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Xenial:
  Triaged

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Joseph Salisbury]

Can you test the following kernels to see when this bug was introduced
upstream:

4.4.41: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.40/
4.4.41: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.41/
4.4.42: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.42/
4.4.43: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.43/
4.4.44: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.44/

You don't have to test every kernel, just up until the kernel that first
has this bug.

Thanks in advance!

** Also affects: linux (Ubuntu Xenial)
   Importance: Undecided
   Status: New

** Changed in: linux (Ubuntu Xenial)
   Status: New => Triaged

** Changed in: linux (Ubuntu)
   Status: Confirmed => Triaged

** Changed in: linux (Ubuntu Xenial)
   Importance: Undecided => Medium

** Tags removed: needs-bisect
** Tags added: performing-bisect

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Xenial:
  Triaged

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

Kernel 4.4.0-63 is bad.

Details:

I reach 
https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/ppa/+build/11016267
 

It does not contains kernel 4.4.0-63 but instead 4.4.0-43.63. Besides
that, I proceed and installed:

linux-headers-4.4.0-43_4.4.0-43.63_all.deb
linux-headers-4.4.0-43-generic_4.4.0-43.63_amd64.deb
linux-image-4.4.0-43-generic_4.4.0-43.63_amd64.deb
linux-image-extra-4.4.0-43-generic_4.4.0-43.63_amd64.deb

So kernel 4.4.0-43 is good.

But I think you need me to test the 4.4.0-63 kernel, so I run "apt
install linux-image-4.4.0-63. And then concluded that kernel 4.4.0-63 is
bad.

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You received this bug notification because you are a member of Kernel
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Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Joseph Salisbury]

Thanks for testing.  I can perform a bisect to identify the commit that
introduced the regression.  We first need to know the last good kernel
and the first bad kernel version.  We know the 4.4.0-62 is good and
4.4.0-64 is bad.  Can you test the 4.4.0-63 kernel, which can be
downloaded from:

https://launchpad.net/~canonical-kernel-
team/+archive/ubuntu/ppa/+build/11016267

For this kernel, you need to install both the linux-image and linux-
image-extra .deb packages.

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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

The bug happens with the latest 4.4 upstream stable kernel.

How I tested:

I reach: 
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.53 

and downloaded: 
linux-headers-4.4.53-040453_4.4.53-040453.201703120131_all.deb
linux-image-4.4.53-040453-generic_4.4.53-040453.201703120131_amd64.deb
linux-headers-4.4.53-040453-generic_4.4.53-040453.201703120131_amd64.deb

Then I run: dpkg -i linux-*

>From grub menu I choose the 4.4.53 kernel.

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Joseph Salisbury]

Can you see if this bug happens with the latest 4.4 upstream stable kernel:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.53

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

The bug is still present with the kernel linux-image-4.4.0-66-generic.

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

Can I help with the bisect?

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
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Re: [Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

Can I help with the bisect?

On Mar 3, 2017 18:11, "Joseph Salisbury" 
wrote:

** Tags added: needs-bisect

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You received this bug notification because you are subscribed to the bug
report.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today.
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness",
but now is empty.
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64
(20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp.
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:

  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-
Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:
rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 

[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Joseph Salisbury]

** Tags added: needs-bisect

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

The bug is still present with the kernel linux-image-4.4.0-65-generic.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

Upstream kernel v4.10 works.

** Tags added: kernel-fixed-upstream

** Changed in: linux (Ubuntu)
   Status: Incomplete => Confirmed

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[Joseph Salisbury]

So the bug happens in -64 but not -62?


Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.10 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as
"Confirmed".


Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.10


** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu)
   Status: Confirmed => Incomplete

** Tags added: kernel-da-key

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

I tried to boot to linux-image-4.4.0-62-generic but I could not get past
the login screen. So I reinstalled the linux-image-4.4.0-62-generic and
run update-grub. Then I could boot to it (linux-image-4.4.0-62-generic)
and the brightness is working again. I think it is a kernel regression.

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

Neither: 
GRUB_CMDLINE_LINUX_DEFAULT="acpi_osi="

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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

Neither:

GRUB_CMDLINE_LINUX_DEFAULT="video.use_bios_initial_backlight=0"

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

Changing the grub line

GRUB_CMDLINE_LINUX_DEFAULT=""

to

GRUB_CMDLINE_LINUX_DEFAULT="acpi_backlight=vendor"

did not work.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

** Attachment added: "ssdt2.dat"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+attachment/4825242/+files/ssdt2.dat

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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More help   : https://help.launchpad.net/ListHelp

[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

** Attachment added: "ssdt1.dat"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+attachment/4825241/+files/ssdt1.dat

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

** Attachment added: "sudo dmidecode > dmidecode.log"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+attachment/4825249/+files/dmidecode.log

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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Unsubscribe : https://launchpad.net/~kernel-packages
More help   : https://help.launchpad.net/ListHelp

[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

** Attachment added: "grep -r . /proc/acpi > acpi"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+attachment/4825239/+files/acpi

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

** Attachment added: "acpixtract acpidump.txt"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+attachment/4825240/+files/acpidump.txt

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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More help   : https://help.launchpad.net/ListHelp

[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

** Attachment added: "ssdt3.dat"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+attachment/4825243/+files/ssdt3.dat

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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More help   : https://help.launchpad.net/ListHelp

[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

** Attachment added: "ssdt4.dat"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+attachment/4825244/+files/ssdt4.dat

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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More help   : https://help.launchpad.net/ListHelp

[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

** Attachment added: "dsdt.dsl"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+attachment/4825246/+files/dsdt.dsl

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help   : https://help.launchpad.net/ListHelp

[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

** Attachment added: "sudo fwts > fwts"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+attachment/4825247/+files/fwts

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions

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Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help   : https://help.launchpad.net/ListHelp

[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

** Attachment added: "ssdt5.dat"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+attachment/4825245/+files/ssdt5.dat

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

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[Kernel-packages] [Bug 1667323] Re: Backlight control does not work and there are no entries in /sys/class/backlight

[André Desgualdo Pereira]

** Attachment added: "sudo fwts method > fwts_method"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+attachment/4825248/+files/fwts_method

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https://bugs.launchpad.net/bugs/1667323

Title:
  Backlight control does not work and there are no entries in
  /sys/class/backlight

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  It was working fine until today. 
  The folder /sys/class/backlight/ use to have "acpi_video0/brightness", but 
now is empty. 
  I am using Nvidia Proprietary driver 340.101 (proprietary, tested). The 
problem persists even with the 304 driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-64-generic 4.4.0-64.85
  ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
  Uname: Linux 4.4.0-64-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC1:  desgua 2028 F pulseaudio
   /dev/snd/controlC0:  desgua 2028 F pulseaudio
  CurrentDesktop: Unity
  Date: Thu Feb 23 11:31:18 2017
  HibernationDevice: RESUME=UUID=f23a6347-9483-460e-aa29-cbc47850f890
  InstallationDate: Installed on 2014-05-01 (1028 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 002 Device 003: ID 064e:a127 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-64-generic 
root=/dev/mapper/ubuntu--vg-root ro
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-64-generic N/A
   linux-backports-modules-4.4.0-64-generic  N/A
   linux-firmware1.157.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-08-17 (189 days ago)
  dmi.bios.date: 12/03/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.13
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3659
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 32.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.13:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr049D212412102:rvnHewlett-Packard:rn3659:rvr32.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv6 Notebook PC
  dmi.product.version: 049D212412102
  dmi.sys.vendor: Hewlett-Packard

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