X forwarding problem?

[eekrazyk]

I'm running Kubuntu 8.04. I'm ssh'ing to a Solaris box to run one of our design tools, but I'm receiving the following error:

// cannot connect to Xserver '10.33.49.239:0'
// X server is not running
// Cannot initialize device driver.
// Error: Connection to hardware type X11dd failed (from: Core/VDD/vdd 08)

I'm using the -X option with SSH. I have also tried the -Y option, but it doesn't work.

Anyone have any ideas?

[walfred]

Re: X forwarding problem?

by default, X starts with -nolisten for security reasons.
But you need it, so my advice is edit /etc/X11/xinit/xserverrc
and change the line

exec /usr/bin/X11/X -nolisten tcp

for

exec /usr/bin/X11/X

Then restart X (log out and log in again, or even press Ctrl+Alt+Backspace). I think that does it. Perhaps there are some other tweaks via System Settings, but I don't know them.
I hope someone brings us some light...

[spotslayer]

Re: X forwarding problem?

Have you installed xauth on the local computer?

D

[eekrazyk]

Re: X forwarding problem?

Yep, xauth is installed. The Unix box I'm trying to get this running on is on the list.

It might help to note that we have a Linux cluster that we run other tools on. I can get the tools to run on the cluster without a problem.

[eekrazyk]

Re: X forwarding problem?

by default, X starts with -nolisten for security reasons.
But you need it, so my advice is edit /etc/X11/xinit/xserverrc
and change the line

exec /usr/bin/X11/X -nolisten tcp

for

exec /usr/bin/X11/X

Then restart X (log out and log in again, or even press Ctrl+Alt+Backspace). I think that does it. Perhaps there are some other tweaks via System Settings, but I don't know them.
I hope someone brings us some light...

Okay, tried this. Still doesn't work.

// cannot connect to Xserver '10.33.49.239:0'
// X server is not running
// Cannot initialize device driver.
// Error: Connection to hardware type X11dd failed (from: Core/VDD/vdd 08)

> printenv | grep -i display
DISPLAY=10.33.49.239:0
UI_DISPLAY=X11dd

I'm not sure what the UI_DISPLAY variable is. I've tried unsetting it, but that doesn't fix the problem and it somehow gets set again.

[eekrazyk]

Re: X forwarding problem? <SOLVED>

Doh. I feel like a fool.

I have my .cshrc set up for both linux and Sun boxes...

if ($OS_NAME == "Linux") then
  if (`printenv REMOTEHOST` != "" && `printenv SSH_CLIENT` == "") then
    setenv DISPLAY `echo $REMOTEHOST`:0
  endif

.......

if ($OS_NAME == "SunOS") then
  if (`printenv REMOTEHOST` != "" ) then
    setenv DISPLAY $REMOTEHOST":0"
  endif

See the problem? My DISPLAY variable should have been set to something like 'localhost:10.0', but instead was set to my workstation IP.

All is fixed now. Thanks for the replies.

[walfred]

Re: X forwarding problem?


I would suggest you checking your firewall rules, but you did it great.
Nice for you, my friend