Ubuntu
linux-source-2.6.22 package

  1. Bug #138452
  2. Comment #3

Comment 3 for bug 138452

Revision history for this message
Florin Iucha (florin-iucha) wrote :

My original report was mistaken. Even with the latest linux image (linux-image-2.6.22-11-generic 2.6.22-11.33) I can change the LCD brigthness using the gnome applet only when I boot using AC power. If I start the computer and run on batteries, I cannot change the brightness. In the kernel log there is a statement about the "hal acpi add-on" having crashed. I can change the brightness by echoing a value in /proc/acpi/video/VID/LCD0/brightness.

Note that even with the current kernel (2.6.22-11.33), there are still two "VID" entries in /proc/acpi/video.

Also, changing the the current brightness using the applet is not reflected in the /proc entry.