Had this problem after updating from 13.04 to 13.10. Installed the kernel from saucy-proposed and added the boot parameter as per this bug.
On an XPS13 L322X and running 3.11.0-15-generic #23. Works now! -- 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 and 3.8.0-16, 3.8.0-22 and 3.11.0-12 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1163720/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
