ERRATA: 'i915.invert_brightness=1' is *not* the way to go. Brightness is actually handled correclty... but when booting the XPS 12 with 3.8rc5, brightness is by default set to its minimum value (iow. off). One just needs to increase it with Fn+F5 to have the panel "wake up".
Note that this issue is also solved in the Quantal kernel, which, if I read correctly, incorporates all the quirks - for the brightness, trackpad, etc. - that have been developed as part of the Dell/Ubuntu Sputnik project (for the XPS 13). It appears none of this quirks are mainstream as per 3.8rc5 :-( -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1103594 Title: Cypress Trackpad wrongly (?) detected as "PS/2 Cypress Trackpad" ("evdev *pointer* catchall") on XPS 12 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1103594/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
