Emile Reynaud

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!

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.

I am an old linux user. I am about to try to install Houdini on Linux today. I am focused on ease to install.
- ubuntu 23.04, following this doc https://www.sidefx.com/docs/houdini/licensing/install_launcher.html [www.sidefx.com] and using this command to solve installer QT issue sudo apt-get install --reinstall libxcb-xinerama0
- pop os, is Ubuntu base so it's the same as above but i didn't see the point of using Pop OS yet.
- Rocky Linux : is probably going to replace CentOS in studios but i couldn't find the equivalent to that command i used to solve Qt issue. If anyone knows how to fix it. Anyway in general it's a more advanced distro. I ll probably give another try soon but it needs more time to configure while it took 1 hour to do everything with Ubuntu.

Ubuntu is perfect right now.