Minisforum UM790 Pro, VM starts but not really

[glockmane]

Hi,

followed your guide (good written btw!) but still cannot get the iGPU Passthrough working.. Fresh install, Proxmox 8.2.1, Minisforum BIOS 1.07.

VM BIOS is SeaBios and I tried the linked 7940HS BIOS File and also the Extraction Variant, like described in your guide, same behaviour.

When ROM Bar is activated on the passthrough device PC resets on starting the VM..

Without ROM Bar the machine seems to start but there is no Console Output and I cannot RDP into the VM (RDP is already activated and working) so I guess it is not really running. At this point the iGPU is not set as primary GPU and the Output is set to Default. If I delete the iGPU Passthrough everything is working.

Thanks for help!

[mntyfrsh]

UM780 XTX here. They essentially use the same components, save for the 7840HS vs the 7940HS in the UM790, which is really just a re-binned version of the same exact CPU. Works without a hitch except I had to set CPU Type to x86-64-v4 as per this thread - https://forum.proxmox.com/threads/win11-vm-opening-many-tabs-at-once-crashes-proxmox-host.140670/ or the Windows 11 VM would randomly crash for no reason.

I suspect there's an error in your configuration that is causing the problem.

[kemanaves]

Hi,

followed your guide (good written btw!) but still cannot get the iGPU Passthrough working.. Fresh install, Proxmox 8.2.1, Minisforum BIOS 1.07.

VM BIOS is SeaBios and I tried the linked 7940HS BIOS File and also the Extraction Variant, like described in your guide, same behaviour.

When ROM Bar is activated on the passthrough device PC resets on starting the VM..

Without ROM Bar the machine seems to start but there is no Console Output and I cannot RDP into the VM (RDP is already activated and working) so I guess it is not really running. At this point the iGPU is not set as primary GPU and the Output is set to Default. If I delete the iGPU Passthrough everything is working.

Thanks for help!

I have the same host and the same issue, the vGPU doesn't appear after follorwing all the steps.
Sadly this guide is not working.

[glockmane]

UM780 XTX here. They essentially use the same components, save for the 7840HS vs the 7940HS in the UM790, which is really just a re-binned version of the same exact CPU. Works without a hitch except I had to set CPU Type to x86-64-v4 as per this thread - https://forum.proxmox.com/threads/win11-vm-opening-many-tabs-at-once-crashes-proxmox-host.140670/ or the Windows 11 VM would randomly crash for no reason.

I suspect there's an error in your configuration that is causing the problem.

What BIOS do you use? Or did you self extract it?

[mntyfrsh]

I don't recall if I used the vBIOS from the repo or extracted it myself. If you want to extract the vBIOS yourself it's very simple. Just make sure you install the 'build-essential' package before compiling.

[glockmane]

@mntyfrsh

That's the problem, I tried both variants (downloaded BIOS and extracted BIOS) and doesn't work for me..

[mntyfrsh]

Hop on the Unofficial Proxmox Discord at https://discord.gg/ESVXPG3Q and we'll see if we can help you out.

[glockmane]

@mntyfrsh

Thanks for invitation, just joined and will ask for help later!

[isc30]

Hey, if you manage to find some solutions Im happy to accept PRs with the extra documentation steps or driver files!