Can't talk to X server through ssh tunnel after ~ 18 minutes

Andrew DeFaria
Fri May 27 05:10:00 GMT 2011

On 05/26/11 08:39, Jon TURNEY wrote:
> On 26/05/2011 00:47, Andrew DeFaria wrote:
>> On 5/25/2011 11:01 AM, Tim Daneliuk wrote:
>>> On 5/25/2011 12:43 PM, Andrew DeFaria said this:
>>>> 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:
>>> What arguments are you using to start the ssh session?
>> The only argument is -X. Like I said, I was able to put up X windows 
>> through
>> the ssh tunnel. Then, after some, it stops working - consistently.
> I'd guess this is something to do with an untrusted xauth cookie with a 20
> minute timeout being generated, although exactly how that can happen 
> if you
> are using an X server without the SECURITY extension (as Cygwin/X 
> servers have
> been built for the past couple of years), I don't quite understand.
> See 'ForwardX11Timeout' in 'man ssh_config'
> Use 'ssh -Y'
Ah yes. That seems to have done it. Thanks. Interestingly Cygwin has 
this ForwardX11Timeout in man ssh_config but the Linux system doesn't!

Now I need to characterize my problem with the samba serviced shared 
home directory that keeps me from sharing my ~/.ssh/config...
Andrew DeFaria <>
How come abbreviated is such a long word?

Problem reports:
Unsubscribe info:

More information about the Cygwin mailing list