Same problem here, also right when I upgraded from 15.10 to 16.04. It only happens with the external monitor, and only after logging into gnome. I'm on a Asus zenbook UX303U with NVIDIA GeForce 940M. I need to plug in many different external monitors and projectors for presentations, so having it hang even once in a while is not a solution.
-- 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/1559308 Title: Plugging HDMI screen in causes system hang To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1559308/+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
