Hi !
I am experiencing systematic crashes when launching Houdini 20.5 on multiple Linux distributions (Fedora, PopOS, Ubuntu)
here is the error :

Generating new icons...
Done generating new icons.
radv/amdgpu: The CS has been cancelled because the context is lost. This context is innocent.
radv: GPUVM fault detected at address 0x800000654000.
GCVM_L2_PROTECTION_FAULT_STATUS: 0x240c50
CLIENT_ID: (CPG) 0x6
MORE_FAULTS: 0
WALKER_ERROR: 0
PERMISSION_FAULTS: 5
MAPPING_ERROR: 0
RW: 1

I managed to make it work on newest Rocky Linux after switching to X11. I thought it was because of Wayland but even after switching to X11 it still crashes.I then thought it was because of hybrid gpu configuration or something like that but I checked and i am using my Nvidia GPU
This problem occurs on both my laptop and workstation so i don't think it's an hardware issue. And I am pretty sure it's quite recent issue with new Linux versions (maybe new kernel ?)
I don't find anyone with that same problem after looking on the Internet.
Hope some have some ideas to fix it.

Wayland definitely doesn't work at all yet, so it's not worth even attempting it. I run a similar setup, Rocky 9.5 on PC and Fedora 41 on laptop (so a bit behind the latest), and it all works on my machines™. Did you remember to install required dependencies? I always forget about them.

That error seems to be coming from the amdgpu drivers. Does your machine have integrated graphics? Since you have a discrete GPU, one thing you can try is disabling the integrated graphics in your BIOS.

Thanks for your feedbacks and answers, my original post wasn't clear at all.
1) It works on Rocky Linux 9.5 no problem at all when i switch to X11
2) Yes there is an issue with some distro allowing to switch between GPUs (intel and nvidia) on my laptop and i managed to make it work after switching and making sure the system stayed on the nvidia GPU


Conlusion:
Everything is working now !
X11 + Nvidia works, Wayland or intagrated gpu doesn't

For those who have the same issue, in a terminal:
>prime-select query
>on-demand #means not nvidia
>sudo prime-select nvidia
>reboot

also after you reboot make sure you run Ubuntu xorg mode from login parameters

Sorry for the trouble. Have a good day!