Ubuntu
linux package

  1. Bug #1178796
  2. Comment #102

Comment 102 for bug 1178796

Revision history for this message
In , aaron.lu (aaron.lu-linux-kernel-bugs) wrote :

There is a new quick mechanism in kernel now.

Can you try adding acpi_backlight=native to kernel cmdline? With this cmdline option, you should have only one interface under /sys/class/backlight that is intel_backlight and xorg.conf modification isn't necessary. If everything works, I can add your machine to a quirk table for this to happen automatically so that you do not need to add that cmdline option.