uek2wooF Posted April 20, 2021 Share Posted April 20, 2021 Hi I had passthrough working a year ago in windows (and linux and osx) so I know it is possible with my GTX 780. This is an amd ryzen 9 3900x with no onboard video, just the one GTX 780 card. I upgraded to 6.9.2 and tried again to do passthrough. I used the new way (tools -> system devices) to check the boxes for the video and sound: IOMMU group 33: [10de:1004] 12:00.0 VGA compatible controller: NVIDIA Corporation GK110 [GeForce GTX 780] (rev a1) [10de:0e1a] 12:00.1 Audio device: NVIDIA Corporation GK110 High Definition Audio Controller (rev a1) Those are the only 2 things in that iommu group. I have tried legacy with seabios, and I tried uefi with ovmf. I tried both machine types with each. I tried the old (echo 0 > /sys/class/vtconsole/vtcon0/bind) 2>/dev/null (echo 0 > /sys/class/vtconsole/vtcon1/bind) 2>/dev/null (echo efi-framebuffer.0 > /sys/bus/platform/drivers/efi-framebuffer/unbind) 2>/dev/null I tried that with and without the system devices boxes checked. I tried modifying the vm XML and putting both the video and sound on the same virtual pci slot with multifunction. I tried HDMI, I tried DisplayPort. I can't remember what else I tried but I feel like I have tried everything. No matter what I still get Code 43 in my windows 10 vm for the video driver and a black screen on the monitor. It says Code 43 before I install the latest nvidia drivers and after. Goal is a steam game stream server. Quote Link to comment
uek2wooF Posted April 20, 2021 Author Share Posted April 20, 2021 Oh I also dumped my video bios but it is only 59k, seems small. Tried passing that with every combination (iirc). /mnt/user/isos/vbios/gtx780vbios.rom: BIOS (ia32) ROM Ext. IBM comp. Video (117*512) Quote Link to comment
uek2wooF Posted April 20, 2021 Author Share Posted April 20, 2021 Holy crap guys after messing with this for 2 days and posting here, I just found a rom I dumped a year ago. Tried with that one and it worked!!!! That one is 129k /mnt/user/isos/vbios/dump.rom: BIOS (ia32) ROM Ext. IBM comp. Video (123*512) 1 Quote Link to comment
Tarcisio Posted September 24, 2021 Share Posted September 24, 2021 On 4/20/2021 at 11:29 AM, uek2wooF said: Holy crap guys after messing with this for 2 days and posting here, I just found a rom I dumped a year ago. Tried with that one and it worked!!!! That one is 129k /mnt/user/isos/vbios/dump.rom: BIOS (ia32) ROM Ext. IBM comp. Video (123*512) Second day messing with this. After move my server to another room, started to get Nvidia error 43 on Windows 10. Tried disabling Hyper-v option inside VM options (nothing), tried creating another VM (nothing), changed monitors and cables (nothing) ... Then I dumped the Vbios again through Spaceinveder script https://github.com/SpaceinvaderOne/Dump_GPU_vBIOS and everything seems to be working fine again now. Quote Link to comment
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