You listed twice the same comman, maybe a typo? anyway this is the output for me:
No backlights were found on your system -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/833595 Title: gnome-settings-daemon crashed with SIGFPE in backlight_get_percentage() To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-settings-daemon/+bug/833595/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
