apport information
** Description changed:
Pressing Fn + Brightness Up and Down results in the brightness indicator
jumping randomly up and down, with no change to the actual brightness.
This laptop uses a nvidia graphics card for display and brightness which
is not supported by ubuntu's default configuration.
There is only one way that I have found to actually make the brightness go up
and down:
1. Add acpi_osi=Linux acpi_backlight=vendor ro to /boot/grub/grub.cfg
2. Type echo 5 > /sys/class/backlight/nv_backlight/brightness
And even with acpi_backlight=vendor switched on, using the Fn key to
affect brightness still does not work, presumably because its trying to
use dell_backlight, which does nothing.
Output of ls /sys/class/backlight with acpi_backlight=vendor:
root@r-Inspiron-1370:~# ls /sys/class/backlight
dell_backlight nv_backlight
root@r-Inspiron-1370:~#
Normally this only contains acpi_video0 (off top of head so might be a typo).
I think someone needs to make a patch to fix this bug.
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu7
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: r 2030 F.... pulseaudio
/dev/snd/controlC0: r 2030 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf1400000 irq 46'
Mixer name : 'Realtek ALC272'
Components : 'HDA:10ec0272,10280418,00100001'
Controls : 11
Simple ctrls : 6
Card1.Amixer.info:
Card hw:1 'NVidia'/'HDA NVidia at 0xf1000000 irq 16'
Mixer name : 'Nvidia GPU 0b HDMI/DP'
Components : 'HDA:10de000b,10de0101,00100100'
Controls : 24
Simple ctrls : 4
DistroRelease: Ubuntu 12.04
HibernationDevice: RESUME=UUID=466a8816-87d1-4087-869f-2e4d02cbf791
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
MachineType: Dell Inc. Inspiron 1370
Package: linux (not installed)
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 nouveaufb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic
root=UUID=ce5b90bb-32e1-4bb1-98c0-ba189425a158 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.2.0-24.39-generic 3.2.16
PulseList:
Error: command ['pacmd', 'list'] failed with exit code 1: Home directory
/home/r not ours.
No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-3.2.0-24-generic N/A
linux-backports-modules-3.2.0-24-generic N/A
linux-firmware 1.79
SourcePackage: linux
Tags: precise precise
Uname: Linux 3.2.0-24-generic i686
UpgradeStatus: Upgraded to precise on 2012-05-04 (23 days ago)
UserGroups: disk
dmi.bios.date: 10/28/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A02
dmi.board.name: 016YGK
dmi.board.vendor: Dell Inc.
dmi.board.version: A02
dmi.chassis.asset.tag: None
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A02
dmi.modalias:
dmi:bvnDellInc.:bvrA02:bd10/28/2009:svnDellInc.:pnInspiron1370:pvrA02:rvnDellInc.:rn016YGK:rvrA02:cvnDellInc.:ct8:cvrA02:
dmi.product.name: Inspiron 1370
dmi.product.version: A02
dmi.sys.vendor: Dell Inc.
+ ---
+ AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
+ ApportVersion: 2.0.1-0ubuntu7
+ Architecture: i386
+ ArecordDevices:
+ **** List of CAPTURE Hardware Devices ****
+ card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog]
+ Subdevices: 1/1
+ Subdevice #0: subdevice #0
+ AudioDevicesInUse:
+ USER PID ACCESS COMMAND
+ /dev/snd/controlC1: r 2030 F.... pulseaudio
+ /dev/snd/controlC0: r 2030 F.... pulseaudio
+ Card0.Amixer.info:
+ Card hw:0 'Intel'/'HDA Intel at 0xf1400000 irq 46'
+ Mixer name : 'Realtek ALC272'
+ Components : 'HDA:10ec0272,10280418,00100001'
+ Controls : 11
+ Simple ctrls : 6
+ Card1.Amixer.info:
+ Card hw:1 'NVidia'/'HDA NVidia at 0xf1000000 irq 16'
+ Mixer name : 'Nvidia GPU 0b HDMI/DP'
+ Components : 'HDA:10de000b,10de0101,00100100'
+ Controls : 24
+ Simple ctrls : 4
+ DistroRelease: Ubuntu 12.04
+ HibernationDevice: RESUME=UUID=466a8816-87d1-4087-869f-2e4d02cbf791
+ InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
+ MachineType: Dell Inc. Inspiron 1370
+ Package: linux (not installed)
+ ProcEnviron:
+ TERM=xterm
+ PATH=(custom, no user)
+ LANG=en_US.UTF-8
+ SHELL=/bin/bash
+ ProcFB: 0 nouveaufb
+ ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic
root=UUID=ce5b90bb-32e1-4bb1-98c0-ba189425a158 ro quiet splash vt.handoff=7
+ ProcVersionSignature: Ubuntu 3.2.0-24.39-generic 3.2.16
+ PulseList:
+ Error: command ['pacmd', 'list'] failed with exit code 1: Home directory
/home/r not ours.
+ No PulseAudio daemon running, or not running as session daemon.
+ RelatedPackageVersions:
+ linux-restricted-modules-3.2.0-24-generic N/A
+ linux-backports-modules-3.2.0-24-generic N/A
+ linux-firmware 1.79
+ SourcePackage: linux
+ Tags: precise precise
+ Uname: Linux 3.2.0-24-generic i686
+ UpgradeStatus: Upgraded to precise on 2012-05-04 (23 days ago)
+ UserGroups: disk
+ dmi.bios.date: 10/28/2009
+ dmi.bios.vendor: Dell Inc.
+ dmi.bios.version: A02
+ dmi.board.name: 016YGK
+ dmi.board.vendor: Dell Inc.
+ dmi.board.version: A02
+ dmi.chassis.asset.tag: None
+ dmi.chassis.type: 8
+ dmi.chassis.vendor: Dell Inc.
+ dmi.chassis.version: A02
+ dmi.modalias:
dmi:bvnDellInc.:bvrA02:bd10/28/2009:svnDellInc.:pnInspiron1370:pvrA02:rvnDellInc.:rn016YGK:rvrA02:cvnDellInc.:ct8:cvrA02:
+ dmi.product.name: Inspiron 1370
+ dmi.product.version: A02
+ dmi.sys.vendor: Dell Inc.
** Attachment added: "AcpiTables.txt"
https://bugs.launchpad.net/bugs/994697/+attachment/3165500/+files/AcpiTables.txt
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https://bugs.launchpad.net/bugs/994697
Title:
Dell 1370 brightness not working,
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