I have prepared a test kernel for saucy and raring that may help Dell XPS13 systems which experience black screen on boot and non-functional backlight controls. (In particular, this case has been reported when UEFI BIOS is enabled on XPS13's). This test kernel is _only_ relevant for XPS13's.
See http://zinc.canonical.com/~kamal/xps13-pch-bootparam/ and follow the instructions in the README. (IMPORTANT: In addition to installing the test kernel, you must enable the fix with a boot parameter, as the README explains). Please provide feedback here regarding whether the test kernel and boot parameter helps you XPS13 backlight. -- 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 [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
