From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030703 Description of problem: Tcp connection is not allowed to X11. My gdm setting is the default setting. That is "DisallowTCP=true" is commented in /etc/X11/gdm/gdm.conf This is de command line use by gdm to launch X11 : "/usr/X11R6/bin/X :0 -auth /var/gdm/:0.Xauth -nolisten tcp vt7" Flag "-nolisten" disallow tcp connection. Version-Release number of selected component (if applicable): gdm-2.4.4.0-2 How reproducible: Always Steps to Reproduce: - log in into X11 - in a xterm do : $ xhost 127.0.0.1 127.0.0.1 being added to access control list $ DISPLAY=127.0.0.1:0.0 eog (eog:25945): Gtk-WARNING **: cannot open display:
It's new "feature" in gdm (2.4.4) and it is actived in the default configuration. gdmsetup have an option to disable this. Sorry.