You are not logged in.
In my PC I have two GPUs, 3080 (primary) and GT 730 (secondary). I need to switch off 3080 so that only GT 730 is used (I need it for KVM passthrough but it's not relevant for what I am describing here). I am following the guide (https://wiki.archlinux.org/title/PCI_pa … h_via_OVMF) and, it seems that the switch is successful, because my primary GPU video stops working and my secondary monitor (connected to secondary GPU) lights up.
But that's it - the secondary screen lights up, but it only shows some scrambled graphics on it, nothing readable - it's not working. I assume this is because of video driver? I have installed mesa package as recommended by "https://wiki.archlinux.org/title/NVIDIA" guide, specifically comment "NVIDIA no longer actively supports these cards and their drivers may not officially support the current Xorg version. It might be easier to use the nouveau driver;". Also, the package "nvidia-390xx-dkms" is not available in pacman which to me means that Arch really does not recommend going the nvidia driver route but rather stick to mesa.
I am getting an error message during boot of my system, which is saying "nouveau 0000:03:00.0: DRM: failed to create ce channel, -22" - I think this means that driver has some issues, but google is only saying to add boot parameters to disable nouveau, which I think will result in making whole mesa package unneccessary?
How can I debug this further, anyone has experience dealing with such issues?
Offline