ubuntu-x-swat team mailing list archive

[Ryan Hamilton <rthamilt@xxxxxxxx>]

Public bug reported:

Binary package hint: xorg

I'm having a tough time getting the backlight adjustment working on a
laptop (Lenovo Y450) using the latest NVIDIA drivers for the G 130M in
the machine.

The laptop function combination keys register as they should, and things get changed in the system in /proc/acpi/video/VGA/LCD/brightness 
/sys/class/backlight/acpi_video0/brightness

Changing the backlight via the function combination (FN + up/down) works
right up until the NVIDIA driver is loaded.  I am able to adjust the
backlight by dropping to a virtual terminal and using the function
combination keys there, but that just stinks as a workaround.  I've
tried the latest driver versions, including the latest beta, without
result.

ProblemType: Bug
Architecture: amd64
Date: Wed Mar 17 02:48:20 2010
DistroRelease: Ubuntu 10.04
DkmsStatus: nvidia-current, 195.36.08, 2.6.32-16-generic, x86_64: installed
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100317)
MachineType: LENOVO IdeaPad Y450
NonfreeKernelModules: nvidia
Package: xorg 1:7.5+3ubuntu1
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-16-generic root=UUID=14e13515-ae02-45a4-87a6-f1d4abd32089 ro quiet splash
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.utf8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
SourcePackage: xorg
Symptom: display
Uname: Linux 2.6.32-16-generic x86_64
dmi.bios.date: 08/14/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 17CN34WW
dmi.board.name: KL1
dmi.board.vendor: LENOVO
dmi.board.version: Rev 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Rev 1.0
dmi.modalias: dmi:bvnLENOVO:bvr17CN34WW:bd08/14/2009:svnLENOVO:pnIdeaPadY450:pvrRev1.0:rvnLENOVO:rnKL1:rvrRev1.0:cvnLENOVO:ct10:cvrRev1.0:
dmi.product.name: IdeaPad Y450
dmi.product.version: Rev 1.0
dmi.sys.vendor: LENOVO
glxinfo: Error: [Errno 2] No such file or directory
system:
 distro:             Ubuntu
 codename:           lucid
 architecture:       x86_64
 kernel:             2.6.32-16-generic

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug lucid

-- 
Can not change LCD brightness on Lenovo Y450 laptop
https://bugs.launchpad.net/bugs/540112
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