No protocol specified E: client-conf-x11.c: XOpenDisplay() failed Mar 25 22:07 : Cannot connect to server in PulseAudio output "MPD/Pulse" (attemp t 1): No such entity Mar 25 22:07 : problems opening audio device while playing "Nerdcore/Optimus Rhy me/School The Indie Rockers/02 - leds.mp3"