It seems that this problem is acked upstream: https://bugs.freedesktop.org/show_bug.cgi?id=60263
There are some posts, from post #22 that show some progress in solving the problem, at least partially.. Fix also on DRM git git://people.freedesktop.org/~danvet/drm ** Bug watch added: freedesktop.org Bugzilla #60263 https://bugs.freedesktop.org/show_bug.cgi?id=60263 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1165965 Title: External display stopped working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1165965/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs