dolphin_oracle wrote: Sun Jan 22, 2023 12:02 am
I'm going to suggest install mx-debian-firmware, then apt install -f
for whatever reason, your installation of the nvidia driver isn't quite finishing.
I installed mx-debian-firmware, then ran apt install -f (the later had nothing to do), but it worked, install is no more borked at reboot.
Now I'm running modesetting dixit system info and dual monitor works. Seems mx-debian-firmware did it.
Thank you for your precious help, I was mad just thinking of all the custom stuff I had to reinstall on a fresh copy, that's quite a relief

Edit : I had no idea more firmware packages were needed, as this is AHS version with AMD microcode, firmware-iwlwifi and all that jazz.
Edit2 : it also fixed the boot progress theme that was a black screen before.
Edit3 : Seems I'm still using Nouveau somehow, but it now works fine. Might as well keep it this way.