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Date:	Wed, 28 Apr 2004 14:36:41 -0500
From:	Brian Ford <ford AT vss DOT fsi DOT com>
Reply-To:	cygwin-xfree AT cygwin DOT com
To:	eti1 AT xmission DOT com
cc:	cygwin AT cygwin DOT com, cygwin-xfree AT cygwin DOT com
Subject:	Re: '"GLX" missing on display' Problems
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Wrong list:

http://cygwin.com/lists.html

This is a Cygwin/X specific question.  Redirecting...

On Wed, 28 Apr 2004, eti1 wrote:

> I use cygwin from home (on a Windows box) to ssh into my machine at work
> (Linux box).  I get the following error when I try to run programs that use
> opengl libs for displaying:
>
> cdernst AT clinton cubit90]$ glxgears
> Xlib:  extension "GLX" missing on display "localhost:10.0".
> Error: couldn't get an RGB, Double-buffered visual
>
> When I ssh, I use the -X option so that graphics get forwarded to my local
> machine.  I am aware that this error is usually manifested because opengl
> libs are not installed on the local machine, but I know I have them on my
> local machine because if I go a 'glxgears' before ssh-ing the gears
> graphics window displays just fine.  It appears that after ssh-ing into my
> work machine, display information is lost.
>
> What is very troubling with this problem is that sometimes the problem
> altogether disappears.  For example, if I ssh into my work machine and let
> the terminal sit for a while, it sometimes works, sometimes not.  Other
> times after ssh-ing in, if I edit a file with "vim" I can run glxgears
> after, but not always.  Nothing is reproducable to get it to work.  But
> once it starts displaying, it usually doesn't stop.  I tried a complete
> uninstall/reinstall of cygwin but it didn't do anything.
>
> Help!
> --Corey

Please also see:
> Problem reports:       http://cygwin.com/problems.html

We need more information to help you.

-- 
Brian Ford
Senior Realtime Software Engineer
VITAL - Visual Simulation Systems
FlightSafety International
the best safety device in any aircraft is a well-trained pilot...

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