Dave Martini wrote:
# xclock
Error: Can't open display: raider4:0.0
What will cause the above error? I'm logged into a remote machine from
my own RHEL 4 box.
I also typed xhost +hostname from my RHEL 4 box to allow the other
machine to display on my server. My DISPLAY environment variable is the
correct name of my RHEL 4 box.
Thank You.
Dave Martini
Unless you've reconfigured your X startup the X server won't be
listening for network connections. The X server normally listens on a
UNIX domain socket (i.e. accessible to the localhost only via the
filesystem).
The simplest solution is to tunnel the X connection via ssh. Login to
the remote machine using ssh -Y. This should setup the appropriate
tunnel for X back to your local display. DON'T modify DISPLAY on the
remote end.
If you really want to use a direct connection you'll need to modify the
file /etc/X11/gdm/gdm.conf and set DisallowTCP=false. Then restart X.
This will enable the X server to receive network connections. You will
also need to make a hole in the firewall to allow connections to the X
server port (6000 IIRC).
--
Nigel Wade, System Administrator, Space Plasma Physics Group,
University of Leicester, Leicester, LE1 7RH, UK
E-mail : nmw@xxxxxxxxxxxx
Phone : +44 (0)116 2523548, Fax : +44 (0)116 2523555
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