Cannot change screen brightness on Lenovo X61

[[e-mail]]

This happens once in a while. The screen becomes dim after boot up or sometimes after suspend and then changing the brightness does not actually change anything visibly. The brightness bar moves up or down as requested but screen brightness does not change.

[Slick (slick666)]

Check the web page about hotkey troubleshooting https://wiki.ubuntu.com/Hotkeys/Troubleshooting.

Please add
-hal-find-by-capability --capability input | xargs -n1 lshal -u > lshal.log
-lshal |grep system.hardware
-dmesg > dmesg.log
-sudo lsinput > lsinput.log
-xkbcomp -xkb :0 - > xkbcomp.txt
-setxkbmap -print > xkbmap.txt

[[e-mail] (dakshay-deactivatedaccount)]

Output of lshal |grep system.hardware...

  system.hardware.primary_video.product = 10754 (0x2a02) (int)
  system.hardware.primary_video.vendor = 32902 (0x8086) (int)
  system.hardware.product = '7675CTO' (string)
  system.hardware.serial = 'LVG4222' (string)
  system.hardware.uuid = '79F12280-8F48-11DC-A23F-E535041AF79C' (string)
  system.hardware.vendor = 'LENOVO' (string)
  system.hardware.version = 'ThinkPad X61' (string)

The following was seen when running xkbcomp...

Warning: Could not load keyboard geometry for :0
                  BadAlloc (insufficient resources for operation)
                  Resulting keymap file will not describe geometry

The rest is attached. Thanks for your help.

Akshay Dua
Ph.D. Student, Computer Science
Portland State University
http://web.cecs.pdx.edu/~akshay/

On Sat, Feb 21, 2009 at 5:51 PM, Slick <email address hidden> wrote:

> Check the web page about hotkey troubleshooting
> https://wiki.ubuntu.com/Hotkeys/Troubleshooting.
>
> Please add
> -hal-find-by-capability --capability input | xargs -n1 lshal -u > lshal.log
> -lshal |grep system.hardware
> -dmesg > dmesg.log
> -sudo lsinput > lsinput.log
> -xkbcomp -xkb :0 - > xkbcomp.txt
> -setxkbmap -print > xkbmap.txt
>
>
> ** Changed in: acpid (Ubuntu)
> Status: New => Incomplete
>
> --
> Cannot change screen brightness on Lenovo X61
> https://bugs.launchpad.net/bugs/332211
> You received this bug notification because you are a direct subscriber
> of the bug.
>

[Slick (slick666)]

Could you please include the version of ubuntu (i.e. 8.04, 8.10) and the variant (ubuntu, kubuntu, etc.). It would also be useful to get the specific version of HAL that you are running as well.

[Slick (slick666)]

Additionally the video card and video card driver would be really helpful as well.

[Brian Curtis (bcurtiswx)]

This seems to be a problem with HAL not acpid. Switching package affected to HAL

[[e-mail] (dakshay-deactivatedaccount)]

1. I am using Ubuntu 8.10 (Intripid)
2. The HAL package version I have installed is 0.5.11-4ubuntu4
3. Graphics card information from 'hardinfo':
      OpenGL Renderer : Mesa DRI Intel(R) 965GM 20061102 x86/MMX/SSE2

Hope this helps

Akshay Dua
Ph.D. Student, Computer Science
Portland State University
http://web.cecs.pdx.edu/~akshay/

On Sat, Feb 28, 2009 at 7:19 AM, Brian Curtis <email address hidden>wrote:

> This seems to be a problem with HAL not acpid. Switching package
> affected to HAL
>
> ** Changed in: hal (Ubuntu)
> Sourcepackagename: acpid => hal
>
> --
> Cannot change screen brightness on Lenovo X61
> https://bugs.launchpad.net/bugs/332211
> You received this bug notification because you are a direct subscriber
> of the bug.
>

[Sammy Spets (sammys)]

I installed the test kernel from the following source and it fixed the problem:

deb http://ppa.launchpad.net/stefan-bader-canonical/ppa/ubuntu intrepid main

I imagine those fixes will be moved to the mainline kernel at some stage soon. Using the one above will give you a fix for the meantime.