I have the same problem with portege Z930 with quantal (amd64). A workaround is to do as root
cd /sys/class/backlight/intel_backlight echo some_value > brightness with some_value an integer lower than 4539. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/935778 Title: Various Toshiba laptops - brightness controls work on first boot, but do nothing after suspend/resume to RAM. To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/935778/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs