I've noticed a bug with the 2.6.38 patched kernel: when the backlight is powered off by a power managemente agent, it can't be lightened on again! Also with:
$ xset dpms force off turns the screen off but it cannot be lightened back! The computer still perfectly working, but no screen! With vanilla the problem doesn't present itself. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/568611 Title: Screen brightness control fails on Dell Studio 1558 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
