modprobe nouveau/nvidia hangs with 100% CPU load on udev

guru meditation

I have a PC with nvidia 1660 GPU, and managed to compile a working kernel with x11-drivers/nvidia-drivers.

Kernel is 5.15 with nouveau compiled as module, nvidia driver is 470.x (for a reason: later versions are said to have additional ”features“ that I am not fond of.)

When I blacklist either of the driver in /etc/modprobe.d, Gentoo boots up fine. The GPU kernel driver works as expected.

Problem occurs when I try to blacklist both drivers, in order to select the appropriate driver (either nvidia or nouveau). Then udev hangs basically forever with 100% CPU load.
You can log in on another shell and check with top. Also, trying to shut down the computer, it hangs on trying to stop udev.

Does anyone have a hint on a solution?

CooSee · Veteran Joined: 20 Nov 2004 Posts: 1507 Location: Earth

https://wiki.gentoo.org/wiki/Nouveau_%26_nvidia-drivers_switching

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guru meditation · Posted: Mon Feb 06, 2023 3:44 am Post subject:

Thanks, the script using modprobe is what I tried, and where udev hangs.

logrusx · Advocate Joined: 22 Feb 2018 Posts: 2680

I'm not sure but this bumblebee thing may be long outdated. Also, according to Arch Wiki:

"Optimus Technology is a hybrid graphics implementation without a hardware multiplexer. The integrated GPU manages the display while the dedicated GPU manages the most demanding rendering and ships the work to the integrated GPU to be displayed."

Also from Bublebee's FAQ which is quoted on top of the Arch Wiki page:

"What is Bumblebee?
Bumblebee is a effort to make Nvidia Optimus enabled laptops work in GNU/Linux systems. Such feature involves two graphics cards with two different power consumption profiles plugged in a layered way sharing a single framebuffer."

As I see you have a PC with no iGPU and no Optimus. This might be totally irrelevant for you.

Best Regards,
Georgi

guru meditation · Posted: Mon Feb 06, 2023 3:28 pm Post subject:

I worl on a PC with a dedicated nvidia GPU and using the nvidia driver 470.x.