Just to add to this - hopefully Dell will issue some sort of firmware/bios update....ive got rebar enabled in the bios but the B50 thinks its not switched on/enabled....

Ive had some help on the ProxMox forum so once proxmox has booted the pci bus needs to be refreshed/rescanned - then the card appears. This is the command used...

echo "1" > /sys/bus/pci/rescan

He has suggested delaying the boot in the bios...does anyone know where that setting would be?

@Comfy​ Glad that you managed to find the workaround and even more glad that you documented it here. I've took the liberty of marking your post as accepted solution

Just to add though the rebar function isnt fixed in windows so i guess that would be some sort of dell bios update?

@Comfy​ Probably. It's something that should be discussed with the technical support

Hi There,

Doesn't the Intel Pro B60 have two GPUs on a single card? I think it would need to be setup for bifurcation to 8x8x in the bios for X16 pcie slot, and enable above 4Gb, since it has two 8x pcie seperated on a single x16 pcie on the GPU, it's just a thought.  

Hope you find a solution.  Later:)

Not that im aware of. Ive fixed the problem now....its a combination of the S3/S5 control and the power management setting to the PCi bus....never had to do that with the A2000 i had before though. As for talking to Dell support....a. i highly doubt they would even reply to me and b. in a perfect world they would be proactive and get the same setup together (its not hard) and then test it for themselves. And c. not really connected but theyve had a latitude from my workplace for 5 weeks now and not managed to repair it...not only that their AI support tool keeps asking me the same questions at 3am....most mornings...