In the log file you may see notice of some amdgpu-pro OpenCL components like ROCm ROCr OpenCL or Legacy Orca OpenCL, there is no amdgpu-pro OpenGL or dkms module installed though. Removing entirely the amdgpu-pro OpenCL packages produce the same bug anyway. The contrary would have been surprising since I assume Superposition to be an OpenGL benchmark and to not make use of OpenCL, but to be 100% sure I removed all those amdgpu-pro packages and I get the same bug with stock Ubuntu anyway.
In the log file you may see notice of some amdgpu-pro OpenCL components like ROCm ROCr OpenCL or Legacy Orca OpenCL, there is no amdgpu-pro OpenGL or dkms module installed though. Removing entirely the amdgpu-pro OpenCL packages produce the same bug anyway. The contrary would have been surprising since I assume Superposition to be an OpenGL benchmark and to not make use of OpenCL, but to be 100% sure I removed all those amdgpu-pro packages and I get the same bug with stock Ubuntu anyway.