Issue with OpenGL in anatomist

[manuegrx]

Hi,

It seems that Anatomist does not longer recognized my OpenGL version.
The following message appears when I open Anatomist : "Unrecognized OpenGL version" and Anatomist crash when I want to open an image.
My OpenGL version is the following:

glxinfo | grep "OpenGL version
OpenGL version string: 4.6.0 NVIDIA 470.199.02"

I downloaded a new casa with the latest developer image and I still have the same problem.
I don't think that I changed anything recently regarding openGL in my computer.

Has anyone encountered this type of problem or have any leads?

Thank you,

Emmanuelle

[denisri]

Hi,
I think I have never seen this error...
The string "Unrecognized OpenGL version" does not exist in Anatomist source code. But I can find it in the Qt libs (strings /usr/lib/x86_64-linux-gnu/libQt5Gui.so | fgrep "Unrecognized OpenGL version" matches). So it's Qt which detects a problem with OpenGL at first.
Can you please output a bit more of glxinfo command please ? Like server glx vendor / version, client glx vendor / version, GLX version, OpenGL vendor / renderer... ?
Does glxgears work correctly ?
Have you recently performed updates on your host system ? Have you rebooted it after that ?
Denis

[manuegrx]

Thanks for your quick answer !
I don't think I performed updates on my host system recently (but I haven't used anatomist for 2-3 months so I'm not sure when the problem started)

As I am using casa to used Anatomist, should I check Qt and OpenGL on my host system or inside the container ?
Could this be related to an issue on my host system and not in casa ?
glxgears works on both (but with some "black inteference" in casa).

In my host system:

server glx vendor string: NVIDIA Corporation
server glx version string: 1.4
client glx vendor string: NVIDIA Corporation
client glx version string: 1.4
GLX version: 1.4
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: Quadro K5000/PCIe/SSE2
OpenGL version string: 4.6.0 NVIDIA 470.199.02

In casa :

server glx vendor string: Brian Paul
server glx version string: 1.4 Mesa 22.0.5
client glx vendor string: Brian Paul
client glx version string: 1.4 Mesa 22.0.5
GLX version: 1.4
OpenGL vendor string: Mesa/X.org
OpenGL renderer string: llvmpipe (LLVM 14.0.0, 256 bits)
OpenGL version string: 4.5 (Compatibility Profile) Mesa 22.0.5

[denisri]

Qt is used only inside the container, and works for other people. The problem is not in Qt I think, but Qt detects a problem in OpenGL and prints a warning about it, and he's right I think.
The problem is in OpenGL: to work properly with nvidia hardware and drivers, the drivers from the host linux system should be mounted and used from within the container. Here glxinfo says that the OpenGL/GLX implementation used inside the container is not nvidia but Mesa, so I guess the drivers are not correctly seen from within the container.
Can you try:

• exit the container
• restart is using the option opengl=nv
• try again glxinfo and anatomist. My guess is that it will work better ;)
• if yes, you can consider installing on the host system the package nvidia-container-tools: it contains tools helping to correcty detect and export nvidia drivers to the container when starting it. When installed, normally the option opengl=nv will not be beeded any longer, it will be done automatically.

See also https://brainvisa.info/casa-distro/technical.html#sing-opengl

[manuegrx]

It works correctly, thank you for your help !