Ubuntu
xserver-xorg-video-intel package

  1. Bug #397617
  2. Comment #27

Comment 27 for bug 397617

Revision history for this message
In , Zhang Rui (rui-zhang) wrote :

please remove acpi_backlight=vender boot option and then:
1. attach the output of "grep . /sys/class/backlight/*/*"
2. attach the output of "cat /sys/class/backlight/acpi_video*/device/path".

does poking these I/F changes the backlight?