Thanks everyone, for the verification that the 3.8.0-20.31 kernel (a.k.a. "3.8.0-20-generic #31-Ubuntu") fixes the problem. This bug is now resolved.
@Adrian, my expectation is that 3.8.0-20.31 should be working for you also. If that's not the case, please contact me directly. @Richard, the audio issue you mentioned isn't likely related to this issue. If you're still experiencing a problem with it, please file a separate bug report. ** Tags removed: verification-needed-raring ** Tags added: verification-done-raring ** Changed in: dell-sputnik Status: Confirmed => Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1169376 Title: XPS13 backlight stopped working after update 3.8.0-18.28 To manage notifications about this bug go to: https://bugs.launchpad.net/dell-sputnik/+bug/1169376/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs