Problem opening remote X applications

Problem opening remote X applications

[Chris Carlson]

I just downloaded Cygwin 64-bit for the first time.  I've been using 
Cygwin 32-bit for years.

I'm running on Windows 7, and my Cygwin 32-bit has been working 
reasonably well for a long time.  My only issue with it was a problem it 
had with my Caps Lock key.  For whatever reason, focus would switch 
windows whenever I pressed the Caps Lock key.  The caps would lock, but 
focus would change.

I finally decided to download the latest and greatest to see if it has 
been fixed.  It appears that it is no longer an issue.  Now I have a new 
problem.

I usually "ssh -X <remote>" to a remote Linux machine.  I can then read 
mail (thunderbird), edit documents (LibreOffice 3.x), run Chrome, and 
edit programs (Emacs).  I'll have half a dozen windows open through the 
X tunnel provided by ssh.  Works well and lasts for hours.

After upgrading to Cygwin 64-bit (this last weekend), everything *seems* 
to be okay for a while.  After about 20 minutes, though, I can no longer 
open windows remotely.  Even though I have thunderbird currently open, 
when I try to run Chrome, I get "(google-chrome:20006): Gtk-WARNING **: 
cannot open display: localhost:10.0".  If I try to open xclock from the 
command line, I get:

xclock
Error: Can't open display: localhost:10.0

Does anybody know what happened?  Why has the tunnel disappeared? It 
hasn't actually disappeared because I'm still running thunderbird 
through it.

Thanks for any assistance on this.
Chris


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Re: Problem opening remote X applications

[Jon TURNEY]

On 03/01/2014 04:51, Chris Carlson wrote:
> I just downloaded Cygwin 64-bit for the first time.  I've been using Cygwin
> 32-bit for years.
[...]
> I usually "ssh -X <remote>" to a remote Linux machine.  I can then read mail
> (thunderbird), edit documents (LibreOffice 3.x), run Chrome, and edit programs
> (Emacs).  I'll have half a dozen windows open through the X tunnel provided by
> ssh.  Works well and lasts for hours.
> 
> After upgrading to Cygwin 64-bit (this last weekend), everything *seems* to be
> okay for a while.  After about 20 minutes, though, I can no longer open
> windows remotely.  Even though I have thunderbird currently open, when I try
> to run Chrome, I get "(google-chrome:20006): Gtk-WARNING **: cannot open
> display: localhost:10.0".  If I try to open xclock from the command line, I get:
> 
> xclock
> Error: Can't open display: localhost:10.0
> 
> Does anybody know what happened?  Why has the tunnel disappeared? It hasn't
> actually disappeared because I'm still running thunderbird through it.

http://x.cygwin.com/docs/faq/cygwin-x-faq.html#q-twenty-minute-timeout

Use 'ssh -Y'

-- 
Jon TURNEY
Volunteer Cygwin/X X Server maintainer

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Re: Problem opening remote X applications

[Chris Carlson]

Wow!  Thanks for the quick response.

That was easy.
Chris


On 1/3/2014 10:23 AM, Jon TURNEY wrote:
> On 03/01/2014 04:51, Chris Carlson wrote:
>> I just downloaded Cygwin 64-bit for the first time.  I've been using Cygwin
>> 32-bit for years.
> [...]
>> I usually "ssh -X <remote>" to a remote Linux machine.  I can then read mail
>> (thunderbird), edit documents (LibreOffice 3.x), run Chrome, and edit programs
>> (Emacs).  I'll have half a dozen windows open through the X tunnel provided by
>> ssh.  Works well and lasts for hours.
>>
>> After upgrading to Cygwin 64-bit (this last weekend), everything *seems* to be
>> okay for a while.  After about 20 minutes, though, I can no longer open
>> windows remotely.  Even though I have thunderbird currently open, when I try
>> to run Chrome, I get "(google-chrome:20006): Gtk-WARNING **: cannot open
>> display: localhost:10.0".  If I try to open xclock from the command line, I get:
>>
>> xclock
>> Error: Can't open display: localhost:10.0
>>
>> Does anybody know what happened?  Why has the tunnel disappeared? It hasn't
>> actually disappeared because I'm still running thunderbird through it.
> http://x.cygwin.com/docs/faq/cygwin-x-faq.html#q-twenty-minute-timeout
>
> Use 'ssh -Y'
>


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