[Bug 1625932] Re: Backlight does not change when adjust it higher than 50% after S3

[AceLan Kao]

** Changed in: hwe-next/vivid
   Status: New => Won't Fix

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Title:
  Backlight does not change when adjust it higher than 50% after S3

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[Bug 1625932] Re: Backlight does not change when adjust it higher than 50% after S3

[AceLan Kao]

Found another machine and restored the factory image, but still can't
reproduce this issue.

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Title:
  Backlight does not change when adjust it higher than 50% after S3

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[Bug 1625932] Re: Backlight does not change when adjust it higher than 50% after S3

[AceLan Kao]

Perry, yes, I'm still working on this to backport the patches to 3.19 kernel.
But, I can not successfully reproduce this issue on the machines I have.
Could you help to try if the kernel fix the issue?
http://people.canonical.com/~acelan/bugs/lp1646537/

The kernel is a little bit older than the latest one, 
so please make sure to boot the system with the right kernel.
Thanks.

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  Backlight does not change when adjust it higher than 50% after S3

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[Bug 1625932] Re: Backlight does not change when adjust it higher than 50% after S3

[perry_yuan]

Could i know whether the two patches have been merged into Ubuntu 14.04 kernel 
codes ?
I found that the issue still can be reproduced on Ubuntu 3.19.0-78 kernel .

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  Backlight does not change when adjust it higher than 50% after S3

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[Bug 1625932] Re: Backlight does not change when adjust it higher than 50% after S3

[Anthony Wong]

** Also affects: hwe-next/vivid
   Importance: Undecided
   Status: New

** Also affects: hwe-next/xenial
   Importance: Undecided
   Status: Fix Released

** Changed in: hwe-next/vivid
 Assignee: (unassigned) => AceLan Kao (acelankao)

** Changed in: hwe-next/vivid
   Importance: Undecided => High

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  Backlight does not change when adjust it higher than 50% after S3

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[Bug 1625932] Re: Backlight does not change when adjust it higher than 50% after S3

[AceLan Kao]

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

** Changed in: hwe-next
   Status: Fix Committed => Fix Released

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  Backlight does not change when adjust it higher than 50% after S3

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[Bug 1625932] Re: Backlight does not change when adjust it higher than 50% after S3

[Launchpad Bug Tracker]

This bug was fixed in the package linux - 4.4.0-42.62

---
linux (4.4.0-42.62) xenial; urgency=low

  * Fix GRO recursion overflow for tunneling protocols (LP: #1631287)
- tunnels: Don't apply GRO to multiple layers of encapsulation.
- gro: Allow tunnel stacking in the case of FOU/GUE

  * CVE-2016-7039
- SAUCE: net: add recursion limit to GRO

linux (4.4.0-41.61) xenial; urgency=low

  [ Kamal Mostafa ]

  * Release Tracking Bug
- LP: #1628204

  * nvme drive probe failure (LP: #1626894)
- (fix) NVMe: Don't unmap controller registers on reset

linux (4.4.0-40.60) xenial; urgency=low

  [ Kamal Mostafa ]

  * Release Tracking Bug
- LP: #1627074

  * Permission denied in CIFS with kernel 4.4.0-38 (LP: #1626112)
- Fix memory leaks in cifs_do_mount()
- Compare prepaths when comparing superblocks
- SAUCE: Fix regression which breaks DFS mounting

  * Backlight does not change when adjust it higher than 50% after S3
(LP: #1625932)
- SAUCE: i915_bpo: drm/i915/backlight: setup and cache pwm alternate
  increment value
- SAUCE: i915_bpo: drm/i915/backlight: setup backlight pwm alternate
  increment on backlight enable

linux (4.4.0-39.59) xenial; urgency=low

  [ Joseph Salisbury ]

  * Release Tracking Bug
- LP: #1625303

  * thunder: chip errata w/ multiple CQEs for a TSO packet (LP: #1624569)
- net: thunderx: Fix for issues with multiple CQEs posted for a TSO packet

  * thunder: faulty TSO padding (LP: #1623627)
- net: thunderx: Fix for HW issue while padding TSO packet

  * CVE-2016-6828
- tcp: fix use after free in tcp_xmit_retransmit_queue()

  * Sennheiser Officerunner - cannot get freq at ep 0x83 (LP: #1622763)
- SAUCE: (no-up) ALSA: usb-audio: Add quirk for sennheiser officerunner

  * Backport E3 Skylake Support in ie31200_edac to Xenial (LP: #1619766)
- EDAC, ie31200_edac: Add Skylake support

  * Ubuntu 16.04 - Full EEH Recovery Support for NVMe devices (LP: #1602724)
- SAUCE: nvme: Don't suspend admin queue that wasn't created

  * ISST-LTE:pNV: system ben is hung during ST (nvme) (LP: #1620317)
- blk-mq: Allow timeouts to run while queue is freezing
- blk-mq: improve warning for running a queue on the wrong CPU
- blk-mq: don't overwrite rq->mq_ctx

  * lsattr 32bit does not work on 64bit kernel (Inappropriate ioctl error)
(LP: #1619918)
- btrfs: bugfix: handle FS_IOC32_{GETFLAGS, SETFLAGS, GETVERSION} in
  btrfs_ioctl

  * radeon: monitor connected to onboard VGA doesn't work with Xenial
(LP: #1600092)
- drm/radeon/dp: add back special handling for NUTMEG

  * initramfs includes qle driver, but not firmware (LP: #1623187)
- qed: add MODULE_FIRMWARE()

  * [Hyper-V] Rebase Hyper-V to 4.7.2 (stable) (LP: #1616677)
- hv_netvsc: Implement support for VF drivers on Hyper-V
- hv_netvsc: Fix the list processing for network change event
- Drivers: hv: vmbus: Introduce functions for estimating room in the ring
  buffer
- Drivers: hv: vmbus: Use READ_ONCE() to read variables that are volatile
- Drivers: hv: vmbus: Export the vmbus_set_event() API
- lcoking/barriers, arch: Use smp barriers in smp_store_release()
- asm-generic: guard smp_store_release/load_acquire
- x86: reuse asm-generic/barrier.h
- asm-generic: add __smp_xxx wrappers
- x86: define __smp_xxx
- asm-generic: implement virt_xxx memory barriers
- Drivers: hv: vmbus: Move some ring buffer functions to hyperv.h
- Drivers: hv: vmbus: Implement APIs to support "in place" consumption of
  vmbus packets
- drivers:hv: Lock access to hyperv_mmio resource tree
- drivers:hv: Make a function to free mmio regions through vmbus
- drivers:hv: Track allocations of children of hv_vmbus in private resource
  tree
- drivers:hv: Separate out frame buffer logic when picking MMIO range
- Drivers: hv: vmbus: handle various crash scenarios
- Drivers: hv: balloon: don't crash when memory is added in non-sorted order
- Drivers: hv: balloon: reset host_specified_ha_region
- tools: hv: lsvmbus: add pci pass-through UUID
- hv_netvsc: move start_remove flag to net_device_context
- hv_netvsc: use start_remove flag to protect netvsc_link_change()
- hv_netvsc: untangle the pointer mess
- hv_netvsc: get rid of struct net_device pointer in struct netvsc_device
- hv_netvsc: synchronize netvsc_change_mtu()/netvsc_set_channels() with
  netvsc_remove()
- hv_netvsc: set nvdev link after populating chn_table
- hv_netvsc: Fix VF register on vlan devices
- hv_netvsc: remove redundant assignment in netvsc_recv_callback()
- hv_netvsc: introduce {net, hv}_device_to_netvsc_device() helpers
- hv_netvsc: pass struct netvsc_device to rndis_filter_{open, close}()
- hv_netvsc: pass struct net_device to rndis_filter_set_device_mac()
- hv_netvsc: pass struct net_device to rndis_filter_set_offload_params()
- netvsc: get 

[Bug 1625932] Re: Backlight does not change when adjust it higher than 50% after S3

[Shih-Yuan Lee]

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

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  Backlight does not change when adjust it higher than 50% after S3

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[Bug 1625932] Re: Backlight does not change when adjust it higher than 50% after S3

[Joseph Salisbury]

Hello,

When you have a chance, can you verify this bug is fixed? See comment
#2.

Thanks in advance!

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  Backlight does not change when adjust it higher than 50% after S3

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[Bug 1625932] Re: Backlight does not change when adjust it higher than 50% after S3

[Joseph Salisbury]

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

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  Backlight does not change when adjust it higher than 50% after S3

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[Bug 1625932] Re: Backlight does not change when adjust it higher than 50% after S3

[Anthony Wong]

** Changed in: hwe-next
   Status: New => Fix Committed

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Title:
  Backlight does not change when adjust it higher than 50% after S3

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[Bug 1625932] Re: Backlight does not change when adjust it higher than 50% after S3

[Brad Figg]

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 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

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Title:
  Backlight does not change when adjust it higher than 50% after S3

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[Bug 1625932] Re: Backlight does not change when adjust it higher than 50% after S3

[Andy Whitcroft]

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

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

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  Backlight does not change when adjust it higher than 50% after S3

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[Bug 1625932] Re: Backlight does not change when adjust it higher than 50% after S3

[Kamal Mostafa]

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

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

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Title:
  Backlight does not change when adjust it higher than 50% after S3

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[Bug 1625932] Re: Backlight does not change when adjust it higher than 50% after S3

[AceLan Kao]

** Tags added: originate-from-1620993 somerville

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  Backlight does not change when adjust it higher than 50% after S3

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[Bug 1625932] Re: Backlight does not change when adjust it higher than 50% after S3

[AceLan Kao]

The upstream bug
https://bugs.freedesktop.org/show_bug.cgi?id=97486

And the issue could be fixed by the following 2 commits in drm-intel-
next-queued.

commit 32b421e79e6b546da1d469f1229403ac9142d695
Author: Jani Nikula 
Date:   Mon Sep 19 13:35:25 2016 +0300

drm/i915/backlight: setup and cache pwm alternate increment value

and

commit e29aff05f239f8dd24e9ee7816fd96726e20105a
Author: Shawn Lee 
Date:   Mon Sep 19 13:35:26 2016 +0300

drm/i915/backlight: setup backlight pwm alternate increment on
backlight enable

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