@Francisco and others, Please check here for the latest status on what's going on upstream:
https://bugzilla.kernel.org/show_bug.cgi?id=47941 Some users have popped out of the woodwork to declare that the most recent patches that went in *breaks* the backlight completely (black screen on boot) for one particular XPS13 configuration: IvyBridge with UEFI enabled along with Legacy BIOS enabled. (Those same users also say that backlight control *always* worked for them, even without _any_ patch). To complicate things further, a couple of other users with the same UEFI +Legacy configuration say the exact opposite: That the quirk patch fixes their never-before-working backlight control (same as for all the other non-UEFI users). If anyone with an affected machine is willing to pitch in and help with the latest patches being worked on please do so. -- 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
