Package: xserver-xorg-core Followup-For: Bug #620177 Hi,
I had a problem to resume from suspend as well. Finally I found that xserver is no longer run as root by default, which may cause problems at some platforms. I fixed the behaviour by installing 'xserver-xorg-legacy' package, which allows xserver to be run as root, and setting needs_root_rights=yes allowed_users=anybody in '/etc/X11/Xwrapper.config', see https://wiki.archlinux.org/index.php/Systemd/User#Xorg_as_a_systemd_user_service Hope this helps.
