Interestingly, after testing a 3.8.1 kernel, my backlight finally seems to be working correctly again. I can't be sure exactly which kernel version may have fixed the problem, but it was most likely something during the 3.8 development cycle.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-nouveau in Ubuntu. https://bugs.launchpad.net/bugs/1101919 Title: Display brightness is stuck at lowest setting on GeForce Go 7900 GS Status in “xserver-xorg-video-nouveau” package in Ubuntu: Confirmed Status in “xserver-xorg-video-nouveau” package in Fedora: Unknown Bug description: 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1101919/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
