Matlab 2025a incredibly laggy on Fedora 42 (no hardware acceleration)

Matlab 2025a is incredibly laggy on Fedora 42 Gnome (Wayland). I have a laptop with AMD APU (Ryzen 7 5800h) and Nvidia 3050 mobile, but the Matlab checks on startup always decide for software rendering (same for 2024b, for instance). From my debugging it tends to say that the driver is somehow corrupt even though it isn't. The UI on 2025a is incredibly laggy as even highlights lag a second behind the cursor as can be seen here: https://youtu.be/xXxbaS35zkw (for older versions it is OK)

I tried Ubuntu 25.04 (Gnome, Wayland) and Debian 12 (XFCE, X11) VMs and in both Matlab 2025a successfully uses hardware acceleration for the AMD APU (Nvidia can't be passed through virt-manager). Moreover, they work fine even without hardware acceleration with the "-softwareopengl" flag.

What might be going wrong on Fedora's end and how to fix it?

Could it be that Matlab 2025a still doesn't support the latest Mesa drivers? But then, it doesn't even work when I force launch it with Nvidia

__NV_PRIME_RENDER_OFFLOAD=1 __GLX_VENDOR_LIBRARY_NAME=nvidia /usr/local/MATLAB/R2025a/bin/matlab

as then even the gui doesn't load up.

Alternatively, could it be that Matlab doesn't like the dual GPU setup of the laptop?

This is the OpenGL version on Ubuntu 25.04:

glxinfo | grep -i "opengl"
OpenGL vendor string: Mesa
OpenGL renderer string: llvmpipe (LLVM 19.1.7, 256 bits)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 25.0.3-1ubuntu2
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 4.5 (Compatibility Profile) Mesa 25.0.3-1ubuntu2
OpenGL shading language version string: 4.50
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 25.0.3-1ubuntu2
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
OpenGL ES profile extensions:

and this is on Fedora 42:

OpenGL vendor string: AMD
OpenGL renderer string: AMD Radeon Graphics (radeonsi, renoir, ACO, DRM 3.61, 6.14.6-300.fc42.x86_64)
OpenGL core profile version string: 4.6 (Core Profile) Mesa 25.0.4
OpenGL core profile shading language version string: 4.60
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 4.6 (Compatibility Profile) Mesa 25.0.4
OpenGL shading language version string: 4.60
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 25.0.4
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
OpenGL ES profile extensions:

[Suman]

Hi @Viktor

Please try to switch the display protocol on you Fedora machine from Wayland to X11. You can refer to this thread to get more information.

[Viktor]

HI @Suman, thanks for your reply. I am certainly not going to switch to X11 and I don't think this is a solution. Like I said, Matlab 2025a works great on Ubuntu with GNOME under Wayland, so there must be a way to achieve the same in Fedora.

[Walter Roberson]

Note that MATLAB R2025a no longer uses OpenGL -- it uses WebGL exclusively. -softwareopengl is now ignored.

I am not clear as to whether mesa drivers would be used for WebGL on Linux.

Answer 1

[Raymond Norris]

@Viktor can you contact MathWorks Technical Support ([e-mail])? Perhaps they can help track down the issue.