In my .emacs I have:
(setq server-name "vejeta")
(server-start)So that it always starts an emacs server.
Today on my work machine, a Debian squeeze, I wanted to start emacs graphically.
emacsclient -s vejeta -c-s vejeta : So that it connects to the «vejeta» server
-c : So that it creates a new frame (or window)
The error mentioned above was produced:
emacs *ERROR*: Display :0.0 can't be opened
I solved it by running in the console:
## Dance so screen subprocesses can talk to GDM-spawned X servers.
if test -n "$XAUTHORITY"
then
xauth extract - $DISPLAY |
xauth -f ~/.Xauthority merge -
unset XAUTHORITY
fi
Source that helped me solve it: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=539809