debian:/home/chris# qjackctl
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

qjackctl: cannot connect to X server :0.0
debian:/home/chris# qjackctl
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

qjackctl: cannot connect to X server :0.0
debian:/home/chris#