The issue persists with kernel 4.6-rc4. However it disappears (fixed?) with the intel nightly drivers as of April 16th 2016 (from http://kernel.ubuntu.com/~kernel-ppa/mainline/drm- intel-nightly/2016-04-16-wily/ ).
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1566759 Title: Full system lockup after attaching external monitor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1566759/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp