Something just occurred to me. In the remote (vglconnect) shell
session, run glxinfo and look at the server GLX extensions. If
GLX_EXT_libglvnd is among them, then that probably explains why you're
seeing a Mesa error message. When used with the VGL Transport
(vglconnect), VirtualGL makes a few GLX/OpenGL calls to the client-side
X display in order to probe whether it supports quad-buffered stereo.
If the client-side X display supports GLX_EXT_libglvnd, then the libGL
implementation on the Fedora server will use the appropriate GLX
implementation for the X server it's communicating with:
libGLX_nvidia.so.0 when it's communicating with the server-side (3D) X
display and libGLX_mesa.so.0 when it's communicating with the
client-side (2D) X display.
If this hypothesis is correct, then setting VGL_PROBEGLX=0 in the
environment should make the swrast message go away. If so, then that
message truly is innocuous, but you can probably make it go away for
good by installing the Mesa swrast driver (I forget which package
contains that on Fedora.)
If my hypothesis is incorrect, then here are other things to try:
-- Check LD_LIBRARY_PATH and LD_PRELOAD and make sure they aren't
pointing to a directory that contains another libGL DSO.
-- 'vglrun ldd /opt/VirtualGL/bin/glxspheres64' and make sure that it
isn't picking up a non-nVidia libGL DSO somehow.
-- Re-install the nVidia drivers with 32-bit support, if you haven't
already, and install the 32-bit VirtualGL package along with the 64-bit
package.
DRC
On 11/15/17 1:40 PM, Angel de Vicente wrote:
> Hi,
>
> El miércoles, 15 de noviembre de 2017, 18:20:03 (UTC), DRC escribió:
>
> Yes, you should worry about that swrast error, because that means
> Mesa's
> libGL is being loaded into the OpenGL application, not nVidia's. Look
> under /usr/lib64 and make sure libGL.so.1 is pointing to
> libGL.so.1.0.0,
> which it should be if the nVidia drivers are properly installed. Also,
> use /opt/VirtualGL/bin/glxspheres64 as a test, not GLXgears. GLXgears
> is not a useful benchmark. Also, GLXspheres will display the OpenGL
> renderer, which you can use to verify whether the nVidia drivers are
> working properly.
>
>
> thanks for the help. /usr/lib64 seems OK:
>
> [root@deim lib64]# ls -ltr libGL*
> -rwxr-xr-x. 1 root root 589824 Feb 10 2017 libGLEW.so.2.0.0
> lrwxrwxrwx. 1 root root 16 Feb 10 2017 libGLEW.so.2.0 ->
> libGLEW.so.2.0.0
> -rwxr-xr-x. 1 root root 445816 Feb 11 2017 libGLU.so.1.3.1
> lrwxrwxrwx. 1 root root 15 Feb 11 2017 libGLU.so.1 -> libGLU.so.1.3.1
> lrwxrwxrwx. 1 root root 15 Feb 11 2017 libGLU.so -> libGLU.so.1.3.1
> lrwxrwxrwx. 1 root root 22 Aug 23 10:46 libGLdispatch.so.0 ->
> libGLdispatch.so.0.0.0
> lrwxrwxrwx. 1 root root 22 Aug 23 10:46 libGLdispatch.so ->
> libGLdispatch.so.0.0.0
> lrwxrwxrwx. 1 root root 15 Aug 23 10:46 libGLX.so.0 -> libGLX.so.0.0.0
> lrwxrwxrwx. 1 root root 15 Aug 23 10:46 libGLX.so -> libGLX.so.0.0.0
> lrwxrwxrwx. 1 root root 14 Aug 23 10:46 libGL.so.1 -> libGL.so.1.0.0
> lrwxrwxrwx. 1 root root 14 Aug 23 10:46 libGL.so -> libGL.so.1.0.0
> lrwxrwxrwx. 1 root root 18 Aug 23 10:46 libGLESv2.so.2 ->
> libGLESv2.so.2.0.0
> lrwxrwxrwx. 1 root root 18 Aug 23 10:46 libGLESv2.so ->
> libGLESv2.so.2.0.0
> lrwxrwxrwx. 1 root root 21 Aug 23 10:46 libGLESv1_CM.so.1 ->
> libGLESv1_CM.so.1.0.0
> lrwxrwxrwx. 1 root root 21 Aug 23 10:46 libGLESv1_CM.so ->
> libGLESv1_CM.so.1.0.0
> -rwxr-xr-x. 1 root root 74216 Aug 23 10:46 libGLX.so.0.0.0
> -rwxr-xr-x. 1 root root 581768 Aug 23 10:46 libGL.so.1.0.0
> -rwxr-xr-x. 1 root root 78888 Aug 23 10:46 libGLESv2.so.2.0.0
> -rwxr-xr-x. 1 root root 45312 Aug 23 10:46 libGLESv1_CM.so.1.0.0
> -rwxr-xr-x. 1 root root 640736 Aug 23 10:46 libGLdispatch.so.0.0.0
> -rwxr-xr-x 1 root root 1291224 Sep 2 09:14 libGLX_nvidia.so.384.81
> lrwxrwxrwx 1 root root 23 Sep 2 10:44 libGLX_nvidia.so.0 ->
> libGLX_nvidia.so.384.81
> lrwxrwxrwx 1 root root 27 Sep 2 10:44 libGLX_indirect.so.0 ->
> /usr/lib64/libGLX_mesa.so.0
> lrwxrwxrwx 1 root root 26 Sep 2 10:44 libGLESv2_nvidia.so.2 ->
> libGLESv2_nvidia.so.384.81
> lrwxrwxrwx 1 root root 29 Sep 2 10:44 libGLESv1_CM_nvidia.so.1 ->
> libGLESv1_CM_nvidia.so.384.81
> -rwxr-xr-x 1 root root 54296 Sep 2 10:46 libGLESv1_CM_nvidia.so.384.81
> -rwxr-xr-x 1 root root 86200 Sep 2 10:46 libGLESv2_nvidia.so.384.81
> lrwxrwxrwx. 1 root root 20 Oct 3 21:37 libGLX_mesa.so.0 ->
> libGLX_mesa.so.0.0.0
> -rwxr-xr-x. 1 root root 487576 Oct 3 21:38 libGLX_mesa.so.0.0.0
>
>
>
> and running glxspheres64 gives the following, again with the rwrast error:
>
> [angelv@deim ~]$ vglrun +v -cl com glxspheres64
> [VGL] NOTICE: Added /usr/lib64/VirtualGL to LD_LIBRARY_PATH
> Polygons in scene: 62464 (61 spheres * 1024 polys/spheres)
> [VGL] Shared memory segment ID for vglconfig: 29261824
> [VGL] VirtualGL v2.4 64-bit (Build 20170210)
> [VGL] Opening connection to 3D X server :0
> [VGL] NOTICE: Replacing dlopen("/usr/lib64/libdl.so.2") with
> dlopen("libdlfaker.so")
> libGL error: No matching fbConfigs or visuals found
> libGL error: failed to load driver: swrast
> Visual ID of window: 0x21
> Context is Direct
> [VGL] Using Pbuffers for rendering
> OpenGL Renderer: Tesla P100-PCIE-12GB/PCIe/SSE2
> [VGL] Using 1 / 20 CPU's for compression
> [VGL] Using pixel buffer objects for readback (BGR --> BGR)
> [VGL] Client version: 2.1
> 1120.859969 frames/sec - 1250.879726 Mpixels/sec
> 1146.893768 frames/sec - 1279.933445 Mpixels/sec
> 1144.531196 frames/sec - 1277.296815 Mpixels/sec
> [angelv@deim ~]$
>
>
> Any pointers?
>
> Many thanks,
> AdV
>
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