After update to kernel 5.10, cannot enable external monitor

Support Graphics & Display
,
2

I’m experiencing the same problem. There are workarounds, fortunately:

  1. downgrade to the 5.4 kernel (or any version, really, but preferably an LTS version) if you can (that’s the simplest); or
  2. use the beta NVIDIA drivers from AUR (nvidia-utils-dkms, nvidia-beta-dkms); or
  3. use optimus-manager and switch to the “nvidia” mode, but note that PRIME synchronization is seemingly non-functioning with NVIDIA 455.45.01 + Linux 5.10, and using the NVIDIA GPU to do all rendering has implications on the battery life

PCI-Express power management also does not work from 5.10 on as it should, so I really recommend the first option for the time being.

3 Likes