Multiseat second seat broken on previously working configuration
ArchLinux system running Gnome 45.2.
Previously working (several months ago) multiseat configuration. Recent package updates seems to have broken.
Mainboard video output on first seat, and GPU output on second seat. Can log in on either seat using GDM, and create a Gnome or I3 session successfully. With that seat logged in, if I move to the other seat and attempt to log in there as the same or a different user, the screen freezes at the password entry, and mouse no longer moves. First seat continues to work fine.
Browsed journalctl logs, and can see authentication occurred successfully for the second seat. Can post those logs if useful, and whatever other information would be useful to provide.