So far that’s what I’ve done. I’m happy to keep using my system as is, except for the fact that my other packages are going to start falling out of date. It was my understanding that updating some but not all packages isn’t really a supported or intended use case; hence:
Unless there’s a different way I’m missing that I should use to update everything else but remain on nvidia-575xx.
Regarding the solution posted in https://forum.manjaro.org/t/mobile-gtx-1070-hdmi-monitor-not-detected-with-580xx-drivers - I already had this, so no chance of it being my fix:
# cat /sys/module/nvidia_drm/parameters/modeset
Y