I'm having similar problems on my Dell XPS 13 9343 running 15.10 with 4.5.0-040500rc6-generic. I've ran 2 FullHD displays daisy-chained to the miniDP of the notebook, both monitors switched to DP 1.2. This lead to flickering. I since then dropped that configuration and run a single display set to DP 1.1 without flickering. Still there are some problems. When watching a YouTube video fullscreen and changing the volume the screen freezes. The volume overlay doesn't appear, but the video seems to play along and the PC doesn't react to keypresses. The only way out is switching to a TTY (Ctrl+Alt+F1) and restarting lightdm.
Also since I've switched from 4.2.0-30-generic to 4.5.0-040500rc6-generic the messages in dmesg disappeared. Please let me know when you need any more infos from me. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1488719 Title: dmesg shows "[drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!" To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1488719/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
