OK, tentative breakthrough. After all this I think this has been caused by my HDMI expansion card being installed in one of the unsupported ports.
OK, tentative breakthrough. After all this I think this has been caused by my HDMI expansion card being installed in one of the unsupported ports.
Hey, that sounds new to me. Is there a (definitive) link that describes supported and unsupported ports for the HDMI plugin?
Dunno where this is definitively documented but it’s the 2 slots closest to the back.