lxdm: LoginReady has no xauthority
Running programs like xrandr in LoginReady fails (purpose is to setup external monitors properly)
LoginReady has no inheirited xauthority
Current workaround is to setup and export hardcoded XAUTHORITY environment:
XAUTHORITY=/var/run/lxdm/lxdm-:0.auth
export XAUTHORITY
That is not really nice :-S
Seen on ArchLinux with lxdm-0.5.3-4 (GTK3 build)