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Message #142270
[Bug 1389215] Re: Brightness controls are not working in Unity / Xorg because of Nvidia proprietary driver.
Following instructions found in bug #562005, I fixed the problem in
Ubuntu 14.04.03 LTS Trusty Thar. Attached, the script which fixes the
problem. It only creates the file /usr/share/X11/xorg.conf.d/99-nvidia-
proprietary-brigthness-keys-fix.conf if a card that suffers from the
problem is detected. Thus for cards without issue, if this script is
executed, no change is brought to the system. This makes it pretty
safe.
This script should be added to the package that performs the
installation of the package. Can someone help me figure out how to do
this or want to take the lead from here?
** Attachment added: "Script that fixes the brightness keys for NVIDIA proprietary drivers."
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1389215/+attachment/4488588/+files/nvidia-proprietary-brigthness-keys-fix.sh
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https://bugs.launchpad.net/bugs/1389215
Title:
Brightness controls are not working in Unity / Xorg because of Nvidia
proprietary driver.
Status in xorg package in Ubuntu:
Incomplete
Bug description:
Brightness controls are not working in Unity / Xorg. When pressing
the keys <fn><home> and <fn><end> on my Lenovo W510, I see the
indicator on the screen showing the level of brightness changing, so
key mapping is not the problem. However, the brightness is not
changing.
On the kernel level, I have the single following device:
# cd /sys/class/backlight
# ls -l
total 0
lrwxrwxrwx 1 root root 0 Nov 3 17:16 acpi_video0 -> ../../devices/pci0000:00/0000:00:03.0/0000:01:00.0/backlight/acpi_video0
When playing with the <fn><home> and <fn><end>, the value of
/sys/class/backlight/brightness changes accordingly. The screen
brightness does not change.
Performing:
# echo 10 >brightness
...does not have any effect (regardless of the value provided, 10
being just an example).
WORKAROUND
There is an odd workaround. Simply go to the console using
<CTRL><ALT><F1> and using the <fn><home> and <fn><end> keys,
brightness then changes. Return to Unity / Xorg with <CTRL><ALT><F7>
and the selected brightness persists.
NON WORKING WORKAROUND
On the web, I read that adding:
Option "RegistryDwords" "EnableBrightnessControl=1"'
in xorg.conf might fix the problem. I do not have an xorg and when I
let the proprietary Nvidia driver generate one and add this option, X
does not start anymore.
Ubuntu 14.04.1 LTS with latest updates as of this writing.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xorg 1:7.7+1ubuntu8
ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8
Uname: Linux 3.13.0-39-generic x86_64
NonfreeKernelModules: nvidia
.proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
NVRM version: NVIDIA UNIX x86_64 Kernel Module 331.38 Wed Jan 8 19:32:30 PST 2014
GCC version: gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)
.tmp.unity.support.test.0:
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,place,put,snap,resize,move,regex,session,vpswitch,imgpng,gnomecompat,text,ring,grid,mousepoll,animation,unitymtgrabhandles,wall,expo,ezoom,workarounds,fade,scale,unityshell]
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Tue Nov 4 07:38:59 2014
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
DkmsStatus:
bbswitch, 0.7, 3.13.0-32-generic, x86_64: installed
bbswitch, 0.7, 3.13.0-39-generic, x86_64: installed
nvidia-331, 331.38, 3.13.0-32-generic, x86_64: installed
nvidia-331, 331.38, 3.13.0-39-generic, x86_64: installed
tp-smapi, 0.41, 3.13.0-32-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
NVIDIA Corporation GT216GLM [Quadro FX 880M] [10de:0a3c] (rev a2) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device [17aa:2145]
InstallationDate: Installed on 2014-11-01 (3 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
MachineType: LENOVO 4318CTO
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-39-generic root=UUID=994f9c2c-f967-472e-ace3-23cd620ec702 ro quiet splash
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/03/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: 6NET84WW (1.45 )
dmi.board.name: 4318CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6NET84WW(1.45):bd10/03/2012:svnLENOVO:pn4318CTO:pvrThinkPadW510:rvnLENOVO:rn4318CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4318CTO
dmi.product.version: ThinkPad W510
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.11.2+14.04.20140714-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Tue Nov 4 01:40:35 2014
xserver.configfile: default
xserver.errors: open /dev/fb0: No such file or directory
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
xserver.version: 2:1.15.1-0ubuntu2.1
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