I have no idea what happened but installing Ubuntu in UEFI mode on my XPS 13 laptop fixed the brightness issues. I am able to change brightness with function keys and it will lower or increase the brightness accordingly. Kernel 3.8.0-28-generic here
-- 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 [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
