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<[log in to unmask]>
> Sent by: Mailing list for users of COOT Crystallographic Software
> <[log in to unmask]>
> 04/29/2011 01:47 AM
> Please respond to
> Kay Diederichs<[log in to unmask]>
>
>
> To
> [log in to unmask]
> cc
>
> 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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