Thanks Søren Gellert! This is a workaround for the 3.5.0 kernel. So the problem is definately the backlight.
Kirill Bogdanenko mentions the problem comes back in the 3.6.x series. Can anyone else confirm this? Currently I can't access http://kernel.ubuntu.com/~kernel-ppa/mainline/ - it seems to fail to load, but I will test as soon as I can access it -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1048141 Title: Ubuntu boots up in a black screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1048141/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs