performance is gonna be terrible but might worth trying nouveau (I mean non-nvidia image)? If that works we know it's something with the driver, if doesn't might be hardware
looks like this not an isolated case and seems to affect various card. my case: using a NVIDIA GeForce GTX 1050 kernel 6.9.7 using card with curent set up no problem for 5 years noticed has I have a 2 monitor set-up (same monitors) one use HDMI the other DVI booting display correctly dmesg on card DVI output to monitor up to when when n...