I've got the same issue on the Toshiba Tecra R840. I looked at the following thread: http://ubuntuforums.org/showthread.php?t=1550219 and there was a fix which involved using toshset to turn the backlight on after adjusting the levels.
When typing "toshset -bl on" into the terminal after adjusting the levels as required, the backlight will subsequently change to that level. Its a temporary fix, but better than nothing. There are also a couple of scripts at the bottom of the page that allow you to bind the brightness- up down keys to the command. However, it doesn't allow gnome/KDE power managers to control the backlight. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/832483 Title: Toshiba R835-P56X - screen brightness control does not work after suspend/resume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/832483/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
