It’s still not loading the Nouveau driver. I can’t think of why that would be, I just have no idea. I was curious to see if the Nouveau driver would work without issue, but if it won’t load then obviously it’s not much use to us.
Since you are already on the LTS kernel, maybe you can try the LTS drivers and see if you have any better luck. You can reinstall any other Nvidia packages you wish to have back at the same time, for example:
sudo pacman -S nvidia-lts nvidia-settings
This has come up a few times, for example here: *ERROR* [nvidia-drm] [GPU ID 0x00000100] Flip event timeout on head 0
After you get the new Nvidia drivers installed you can try the fix they recommended in that thread: