The warning message suggests that your "patch" broke accelerated X11.
To check,

$ xdpyinfo

and look for GLX

if it is not there your X11 can no longer make OpenGL drawing-areas/windows.

That needs to be fixed obviously.

Paul.



On 29/04/11 14:02, Yong Y Wang wrote:
The patch is called a security patch to the OS by our IT dept.  I believe
it made changes to the X11 system.  While I am waiting for response from
our IT dept., I am hoping to find some specific area to look into.

Yong



Kay Diederichs<[email protected]>
Sent by: Mailing list for users of COOT Crystallographic Software
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04/29/2011 01:47 AM
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Kay Diederichs<[email protected]>


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Subject
Re: Coot window problem after patch






Am 20:59, schrieb Yong Wang:
Hi,

We are having a problem with the coot window in our Linux machines after
a patch.  The error message reads like
(coot-real:8985): GtkGLExt-WARNING **: cannot create GdkGLContext


(coot-real:8985): GdkGLExt-CRITICAL **:
gdk_gl_window_impl_x11_make_context_current: assertion
`GDK_IS_GL_CONTEXT_IMPL_X11 (glcontext)' failed

The OS is RHEL 5 (x86_64).  I wonder if anyone has suggestions on where
to look for the problem.
Thanks,

Yong
it may help if you tell us what you mean with "after a patch".

Kay

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