Ubuntu
linux package

  1. Bug #1087874
  2. Comment #17

Comment 17 for bug 1087874

Revision history for this message
Carl Englund (englundc) wrote : Re: Brightness control not working on Acer TimelineX 3820T using Intel graphics

After updating to Ubuntu 13.04 Raring with the latest updates, adding "vendor=backlight" does no longer resolve the problem.

I did however see entries in /sys/class/backlight/ and echoing numbers to /sys/class/backlight/intel_backlight/brightness affects the brightness.

After adding also "acpi_osi=Linux" to the boot options I can now controll the brightness lever with the keys.