I'm nut sure if I'm looking at exactly the same bug, since in my case the displays stay black, no output what so ever. The displays are all connected to the digital output. I'm including the dmesg of one of my machines with drm debug.
** Attachment added: "dmesg.log" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1156310/+attachment/3581128/+files/dmesg.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1156310 Title: xrandr detects too many displays To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1156310/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs