I changed to EFI without reinstalling before, that didn't fix it. After updating to the newest kernel it works now.
Linux mango 3.8.0-30-generic #44-Ubuntu SMP Thu Aug 22 20:52:24 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1163720 Title: Brightness control broken on XPS13 with 3.8.0-16 and 3.8.0-22 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1163720/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
