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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