I am pretty sure this is kernel bug. as root echo 1 > /sys/class/backlight/acpi_video0/brightness has no effect and xbacklight still works as described at the end of https://wiki.archlinux.org/index.php/backlight#sysfs_modified_but_no_brightness_change
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1520355 Title: Backlight doesn't change in GNOME does in Unity To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1520355/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
