Ubuntu
xserver-xorg-video-intel package

  1. Bug #397617
  2. Comment #135

Comment 135 for bug 397617

Revision history for this message
Drew Snellgrove (forkinme-deactivatedaccount) wrote :

There seem to be a number of people, including Macbook users, reporting that their backlight is non-functional in Karmic. This bug seems the most relevant and most comments seemed to point to this one as well.

I'm using a Macbook 2,1 and don't have a usable backlight, leaving me stuck at max brightness (AAAH, my poor eyes!). The backlight existed and worked with Hardy, Intrepid, and Jaunty (with a couple issues that aren't relevant here).

$ xbacklight
No outputs have backlight property
 $ ls -a /sys/class/backlight/
. ..
$

This occurs when using kernel linux-image-2.6.31-14-generic (current Karmic default) or linux-image-2.6.32-020632rc5-generic (most recent from the kernel ppa)

Also tried xserver-xorg-video-intel 2:2.9.0-1ubuntu2 (current Karmic default) and 2:2.9.0+git20091019.751e0a3e-0ubuntu0tormod2 (from xorg-edgers ppa).

Using 'nomodeset' when booting either kernel drops me into a terminal login that flickers unendingly.

It's been mentioned a couple times this was fixed through a kernel patch but I'm unsure if it's made it into linux-image-2.6.32-020632rc5-generic. Is there anything else I can do to try and help pin down this bug?