Ubuntu
linux-source-2.6.22 package

  1. Bug #173652
  2. Comment #63

Comment 63 for bug 173652

Revision history for this message
darylb (darylblanc) wrote : Re: unable to adjust screen brightness on recent Sony Vaio notebooks

I have installed Intrepid Alpha 4 to my HDD now, so I'm not in "safe graphics" anymore. Also I have installed all updates just now and rebooted. However this still doesn't work for me.
I have a Vaio VGN-SZ71WN. I'm running the 32 bit desktop version. If there is any more info you would like me to collect I'd be happy to do it.

daryl@lappytoppy:~$ xrandr --output LVDS --set BACKLIGHT_CONTROL native
X Error of failed request: 171
  Major opcode of failed request: 152 (RANDR)
  Minor opcode of failed request: 15 ()
  Serial number of failed request: 14
  Current serial number in output stream: 14
daryl@lappytoppy:~$ xbacklight -set 50
No outputs have backlight property
daryl@lappytoppy:~$ xrandr --prop | grep BACKLIGHT
daryl@lappytoppy:~$

root@lappytoppy:~# lspci | grep Display
00:02.1 Display controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 0c)

Also, a separate issue (although it may be related to the above failure which is why I'm mentioning it) is that my screen resolution is detected as 1024x600, but should really be 1280x800.