I had another (long) episode of this bug, and there were no files matching /sys/class/drm/card0*/error
Also, this was on a laptop without any external display whatsoever. However, it is true that the internal display, which comes up black with only a useless mouse cursor, was rotated for some reason. Simon SimonG: When you say "rotate the display" does that mean the only/internal one? Or are you rotating something external? Thanks for the reproduction steps! I'll try them when you specify that detail -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1266784 Title: GPU hangs during login to rotated display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1266784/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs