Ubuntu
linux-source-2.6.22 package

  1. Bug #173652
  2. Comment #78

Comment 78 for bug 173652

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

Hi,

Here still on Vaio BZ11XN (Intel X4500MHD).
The 2.6.27-2 kernel does NOT fix the problem. (My Intrepid is up-to-date)

Only rc.local/xrandr + xbacklight can workaround the problem ;

BUT : 2 times out of 3, the rc.local call to xrandr seems to make some kind of race condition with gdm startup, and X do not start completely : gdm starts, the screen blinks 2 or 3 times, then remains black (with backlight on) ; no response from anything (CAPS led is unresponsive, nor SysRq-reboot). Pulling the xrandr call from rc.local and calling it in a terminal *after* GNOME session has opened is OK and makes xbacklight work everytime.