Resolved! Somehow HDMI started working with the default Manjaro video-hybrid-amd-nvidia-450xx-prime drivers. No need for optimus-switching. I suspect that rebooting with the monitor already plugged in did the trick.
Resolved! Somehow HDMI started working with the default Manjaro video-hybrid-amd-nvidia-450xx-prime drivers. No need for optimus-switching. I suspect that rebooting with the monitor already plugged in did the trick.