Ubuntu
xbacklight package

  1. Bug #1638136
  2. Comment #6

Comment 6 for bug 1638136

Revision history for this message
Dmitriy Geels (dmig) wrote :

Some sort of workaround:

1) add udev rule /etc/udev/rules.d/90-backlight.rules:
ACTION=="add", SUBSYSTEM=="backlight", RUN+="/bin/chgrp video /sys/class/backlight/%k/brightness"
ACTION=="add", SUBSYSTEM=="backlight", RUN+="/bin/chmod g+w /sys/class/backlight/%k/brightness"

2) add yourself to group video: sudo usermod -a -G video $USER

3) run: sudo udevadm control -R && sudo udevadm trigger -c add -s backlight