Page History

...

gtk_init_check() fails if it cannot open a socket to the X Server.

The We know two situations in which the connection to the X Server can (but is not limited to) fail in the following situations:fails:

1. You want to start JOE from Windows via SSH
   • The X11 tunnel is not established
     For example if you use PuTTy then the X11 forwarding is per default off. Navigate in the PuTTy connection settings to Connection->SSH->X11 and activate the checkbox "Enable X11 forwarding".
     
   • A local X server is not started
     For example you can install Xming as local X server for Windows.
     
2. You want to start JOE from Ubuntu 16.04 with installed X server libraries via SSH

   • It seems the SSH client has errors. Install the SSH client again

     Code Block
     language bash
     sudo apt -y install ssh

3. The DISPLAY environment variable is not set
4. The X Server is down
5. The socket to the X Server is on too high of a file descriptor