June 8, 20224 yr Hi All, I'm running a strix x399 motherboard with a 24core thread ripper cpu. to put it simply i was to use 4 video cards on the system and passthrough 1 to each VM (4 in total) The issue is the physical space with me wanting to run 4 2+slot cards. the solution (i thought ) would be to use a few x16 to x16 risers for 2 of the cards and have the other 2 slotted in the board directly. i setup 3 VMs with them being plugged direct into the board and they work great. however using a riser i dont get any display from the VM (black screen) unsure if theres something else i need to do in order to get a riser to work. i assumed it wouldn't need any additional config. any suggestions would be greatly appreicated. Cheers Edited June 10, 20224 yr by Zass
June 10, 20224 yr Author To answer my own question, yes a x16 slot using a x16 to x16 riser works. the reason it wasn't working lyes with the videocards i was using, for some reason all of my RX 580 4gb sapphire wouldn't work ( i tried around 10-15 cards) however using a R9 390 sapphire worked first try. the good news is it works, so my project can continue. the bad news is i have lots of cards and am going to have to go buy more...
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