# screen backlight
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"
# keyboard backlight
ACTION=="add", SUBSYSTEM=="leds", RUN+="/bin/chgrp video /sys/devices/platform/thinkpad_acpi/leds/tpacpi::kbd_backlight/brightness"
ACTION=="add", SUBSYSTEM=="leds", RUN+="/bin/chmod g+w /sys/devices/platform/thinkpad_acpi/leds/tpacpi::kbd_backlight/brightness"