ubuntu-x-swat team mailing list archive

[Mathieu Pellerin <nirvn.asia@xxxxxxxxx>]

Public bug reported:

Since I upgraded to Ubuntu natty, I can't change the screen's backlight
brightness. This is a huge regression from maverick (under which I could
change the brightness). It appears to have something to do with the new
nvidia drivers under natty.

The problem persists even when the laptop is running on battery. Due to
this, the battery gets empty after running for only 1h15min.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: nvidia-current 270.41.03-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
NonfreeKernelModules: wl 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 Kernel Module  270.41.03  Sat Apr  9 00:04:57 PDT 2011
 GCC version:  gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu3)
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,gnomecompat,resize,imgpng,mousepoll,move,vpswitch,regex,place,wall,grid,snap,session,animation,expo,workarounds,ezoom,staticswitcher,fade,scale,unityshell]
CompositorRunning: compiz
Date: Mon Apr 18 10:37:39 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
GraphicsCard:
 nVidia Corporation GT216 [GeForce GT 330M] [10de:0a29] (rev a2) (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:0442]
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
JockeyStatus:
 kmod:wl - Broadcom STA wireless driver (Proprietary, Enabled, In use) [auto-install]
 xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, In use)
MachineType: Dell Inc. Vostro 3700
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=1317ee43-70a2-489f-9bf0-540fdfc75cea ro quiet splash vt.handoff=7
Renderer: Unknown
SourcePackage: nvidia-graphics-drivers
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/25/2010
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A10
dmi.board.name: 0R6NH5
dmi.board.vendor: Dell Inc.
dmi.board.version: A10
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A10
dmi.modalias: dmi:bvnDellInc.:bvrA10:bd10/25/2010:svnDellInc.:pnVostro3700:pvrA10:rvnDellInc.:rn0R6NH5:rvrA10:cvnDellInc.:ct8:cvrA10:
dmi.product.name: Vostro 3700
dmi.product.version: A10
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.4+bzr20110415-0ubuntu1
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu1
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

** Affects: nvidia-graphics-drivers (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug compiz-0.9 i386 natty running-unity ubuntu

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https://bugs.launchpad.net/bugs/764195

Title:
  laptop screen blacklight brightness always at 100% (even on battery),
  can't be lowered