My system has two monitors, one attached to a NVIDIA GeForce GT 1030 via an HDMI-DisplayPort adapter and the other attached to a NVIDIA Quadro P4000 directly through a DisplayPort. After upgrading from Fedora 43 to 44, the first monitor came back, flickered a lot, but has settled down and is now operational. The second monitor is not detected at all. The card is detected according to lspci, but the Display Settings app does not show a second monitor or the option to detect a second monitor. The monitor itself reports no signal detected.
I am using the nouveau drivers currently. I had the NVIDIA drivers in 43, but they seem to have been disabled in the upgrade.