Daniel, I'm already running drm-intel-nightly which includes that commit. That particular hack does indeed run (see attached dmesg log at the beginning) but the panel is still blank. I saw the same hack at intel_dp_get_config, but in my machine intel_dp_get_config does not get called at all.
The culprit is clamping bpp from 24 to 18 bpp at intel_dp_compute_config. When the bpp clamping code is disabled and the panel runs at 24 bpp there are no more blank screen issues. (In reply to comment #4) > We've had to duplicate the hack in the hsw code: > > commit 1021442098ee9328fdd4d113d63a3a7f2f40c37b > Author: Daniel Vetter <daniel.vet...@ffwll.ch> > Date: Mon Nov 18 07:38:16 2013 +0100 > > drm/i915: Replicate BIOS eDP bpp clamping hack for hsw > > *** This bug has been marked as a duplicate of bug 71049 *** -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1265544 Title: 8086:0a16 [UX302LG] black screen on boot 3.12.0-7 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1265544/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
