I did some testing with kernels < 4.7: Freezes:
4.4.0-32 from xenial-proposed 4.5.7 from http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.5.7-yakkety/ Works: 4.6.4 from http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6.4/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1559308 Title: Plugging HDMI screen in causes system hang To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1559308/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
