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I have a Dell XPS M1710 with a GeForce Go 7900 GS and freshly-installed,
fully up-to-date Ubuntu 12.10 amd64. When using Nouveau (the default),
it is impossible to adjust the display brightness. Moving the slider in
Brightness and Lock has no effect on the actual display brightness. The
Fn keys for brightness also have no effect (except to move the slider).
Worse, even though the default slider position is the max, the actual
brightness is the lowest-possible setting, making the machine
effectively unusable with Nouveau.
The proprietary NVIDIA drivers do work (and are active at the time of
reporting this). I am happy to provide more info if needed.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3
ProcVersionSignature: Ubuntu 3.5.0-22.34-generic 3.5.7.2
Uname: Linux 3.5.0-22-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 304.43 Sun Aug 19 20:14:03
PDT 2012
GCC version: gcc version 4.7.2 (Ubuntu/Linaro 4.7.2-2ubuntu1)
.tmp.unity.support.test.0:
ApportVersion: 2.6.1-0ubuntu9
Architecture: amd64
CompizPlugins: No value set for
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
Date: Sat Jan 19 13:57:09 2013
DistUpgraded: Fresh install
DistroCodename: quantal
DistroVariant: ubuntu
DkmsStatus: nvidia-current, 304.43, 3.5.0-22-generic, x86_64: installed
ExtraDebuggingInterest: Yes, including running git bisection searches
GraphicsCard:
NVIDIA Corporation G71 [GeForce Go 7900 GS] [10de:0298] (rev a1) (prog-if 00
[VGA controller])
Subsystem: Dell Device [1028:019b]
InstallationDate: Installed on 2013-01-19 (0 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: Dell Inc. MXG061
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-22-generic
root=UUID=a7b8984f-27a9-4805-aee8-60ec72b15c45 ro quiet splash
SourcePackage: xserver-xorg-video-nouveau
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/27/2007
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A07
dmi.board.name: 0CF456
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA07:bd06/27/2007:svnDellInc.:pnMXG061:pvr:rvnDellInc.:rn0CF456:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: MXG061
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.8.6-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.39-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0-0ubuntu1
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu6.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati
1:6.99.99~git20120913.8637f772-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.9-0ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3
** Affects: xserver-xorg-video-nouveau (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug compiz-0.9 quantal running-unity ubuntu
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Display brightness is stuck at lowest setting on GeForce Go 7900 GS
https://bugs.launchpad.net/bugs/1101919
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