Can't talk to X server through ssh tunnel after ~ 18 minutes
Jim Burwell
jimb@jsbc.cc
Sun May 29 23:13:00 GMT 2011
I have a similar issue on Windows 7 64 bit. I don't even use SSH. I
can just run an Xterm or other X app with display pointed directly to
the IP (after doing proper xhost, etc), and the window will display
(often I'll get crashes and stack traces a few times, then it will
display). But then the windows will just vanish for no real reason.
The X application will still be running on the remote box, but the
window is no where to be found on the display.
I typically kill off the xterm on the remote box and run it again. It's
like the X server under windows is simply unmapping the window and it
goes into never-never land. It happens fairly randomly to random
clients running on the same or different hosts. One or two x-app
windows will vanish from that host, while others are still running fine.
Never happened to me under XP 32 bit.
- Jim
On 5/25/2011 10:43, Andrew DeFaria wrote:
> I ssh from my Cygwin box to a Linux machine (happens with Solaris
> machines too) and I can run X applications back to Cygwin/X without a
> problem. However, after a few minutes something happens to the tunnel
> and I can no longer put up any X windows:
>
> $ cat checks.sh
> #!/bin/bash
> while true; do
> date
> xclock &
> sleep 2
> killall xclock
> if [ $? != 0 ]; then
> echo Cannot talk to X Server anymore
> else
> sleep 60
> fi
> done
> $ checkx.sh
> Tue May 24 09:48:43 PDT 2011
> ./checkx.sh: line 12: 10927 Terminated xclock
> Tue May 24 09:49:45 PDT 2011
> ./checkx.sh: line 12: 11393 Terminated xclock
> Tue May 24 09:50:47 PDT 2011
> b./checkx.sh: line 12: 11592 Terminated xclock
> Tue May 24 09:51:49 PDT 2011
> ./checkx.sh: line 12: 11782 Terminated xclock
> Tue May 24 09:52:51 PDT 2011
> ./checkx.sh: line 12: 11977 Terminated xclock
> Tue May 24 09:53:53 PDT 2011
> ./checkx.sh: line 12: 12161 Terminated xclock
> Tue May 24 09:54:55 PDT 2011
> ./checkx.sh: line 12: 12345 Terminated xclock
> Tue May 24 09:55:57 PDT 2011
> ./checkx.sh: line 12: 12534 Terminated xclock
> Tue May 24 09:56:59 PDT 2011
> ./checkx.sh: line 12: 12723 Terminated xclock
> Tue May 24 09:58:01 PDT 2011
> ./checkx.sh: line 12: 12912 Terminated xclock
> Tue May 24 09:59:03 PDT 2011
> ./checkx.sh: line 12: 13142 Terminated xclock
> Tue May 24 10:00:05 PDT 2011
> ./checkx.sh: line 12: 13345 Terminated xclock
> Tue May 24 10:01:07 PDT 2011
> ./checkx.sh: line 12: 13578 Terminated xclock
> Tue May 24 10:02:09 PDT 2011
> ./checkx.sh: line 12: 13843 Terminated xclock
> Tue May 24 10:03:11 PDT 2011
> ./checkx.sh: line 12: 14074 Terminated xclock
> Tue May 24 10:04:13 PDT 2011
> ./checkx.sh: line 12: 14260 Terminated xclock
> Tue May 24 10:05:16 PDT 2011
> ./checkx.sh: line 12: 14455 Terminated xclock
> Tue May 24 10:06:18 PDT 2011
> X connection to localhost:15.0 broken (explicit kill or server shutdown).
> xclock: no process killed
> Cannot talk to X Server anymore
>
> After this I cannot re-establish an X connection until I exit the ssh
> session and ssh back in again. Any ideas?
>
> (I'm gonna post this to both Cygwin and Cygwin-X as I'm not sure if
> this is a problem with ssh or a problem with X).
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