GPU Passthrough not working

[matthewpipes]

I've got a proxmox 7.4-3 server running an i7-5820K on a ASRock x99 Taichi, with a Gigabyte GT 710. The GPU works fine (I can use it to edit BIOS settings when I boot) . I've followed the steps mentioned in both this reddit post and this one. I end up getting error 43 and no display sent out the card. What am I missing?

 

[leesteken]

I don't see anything obvious compared to the manual. Make sure to use this work-around when doing passthrough of the boot (or single) GPU.

 

[matthewpipes]

Not sure what you're referring about for boot gpu workaround, but I modified

/etc/defautl/grub

and put

GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_iommu=on initcall_blacklist=sysfb_init"

but no success with this

 

[leesteken]

Not sure what you're referring about for boot gpu workaround, but I modified

/etc/defautl/grub

and put

GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_iommu=on initcall_blacklist=sysfb_init"

but no success with this

Just to double check: what is the output of cat /proc/cmdline? Maybe your NVidia GPU needs additional work-arounds, like a ROM-file (which might need to be patched). I don't have experience with that, maybe someone else on this forum knows. Or maybe you can find a post of someone who got a GT710 working.
You could try booting the same VM with a recent Ubuntu Live installer ISO (without installing it) to check if passthrough is working with Linux (output on physical display connected to the GPU) instead of Windows, which could narrow it down to a Windows driver issue with passthrough.

 

[matthewpipes]

I did previously try with a couple different roms I found online. This, this and this. I've spent a considerable amount of time tshooting this but haven't tried ubuntu. I'll give that a shot shortly

root@pve:~# cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-5.15.104-1-pve root=/dev/mapper/pve-root ro quiet intel_iommu=on initcall_blacklist=sysfb_init

 

[Dunuin]

I don't have experience with that, maybe someone else on this forum knows. Or maybe you can find a post of someone who got a GT710 working.

My GT710 works perfectly without anything special. I just followed the PCI passthrough article. But I don't boot with it (system uses the onboard GPU of the BMC) and the GT710 is only used for passthrough.