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