Someone

xauth: creating new authoring file /home/tiina/.serverauth.5361

Fatal server error:
Server is already active for display0
If this server is no longer running, remove /tmp/.X0-lock and start again.

xlib: connection to ":0,0" refused by server
xlib: Invalid MIT-MAGIC-COOKIE-1 key giving up.
xinit: unable to connect to x server
xinit: No such process (errno 3): server error.