[SOLVED]sdl fails with 'connection to ":0.0" refused'

[dgulotta]

When I try to run SDL programs, I get the following error about 80% of the time:

Xlib: connection to ":0.0" refused by server
Xlib: XDM authorization key matches an existing client!
Could not initialize SDL: Couldn't open X11 display!

The other 20% of the time, the program starts just fine. As far as I can tell it's completely random.

Any ideas on how to fix this?

[Wormo]

Switch from xdm-specific to normal authorization method for your X clients by specifying auth method in /etc/X11/xdm/xdm-config:

[dgulotta]

Thanks, that fixed it.