The card seems to work when drivers aren't installed, but the moment i want to install the latest Nvidia drivers for Linux, I only get a blank screen.
Even if the card is the second or third card (mounted on a PCIE 1x slot).
Otherwise the PC runs fine even with a 2080 in the full size, 8x speed slot, a 2070 in the full size slot 4x speed, and a 2060 in the PCIE 1x slot with riser.

I think the card must be broken; or a driver issue?