I connect to a server over ssh with
ssh -CX server
ok, And I launch remote graphical apps, ok.
But after some minutes I getGtk-WARNING **: cannot open display
And I have to reset the ssh connection.
Added some outputs
$ echo $DISPLAY; echo $XAUTHORITY localhost:11.0 $ xauth list machine/unix:12 machine/unix:10 machine/unix:11
Answer
I added this to my .ssh/config
host myHost
user myUser
port 22
hostname ipHost
ForwardX11 yes
Compression yes
ForwardX11Trusted yes
Attribution
Source : Link , Question Author : JuanPablo , Answer Author : JuanPablo