Windows 10 Guest BSOD - Proxmox 6.0

[Possums]

After upgrading to Proxmox 6.0, I am experiencing issues with my Windows guests with GPU passthrough.

When booting the guest, a blue screen occurs with the error "Video_TDR_Failure nviddmkm.sys".

This error occurs in fresh installations of Windows 10 as well as Windows Server 2019, but the GPU is perfectly functional in Ubuntu 19.04. There were no issues with Windows guests on Proxmox 5.4.

Anybody have any tips as to resolve this problem?

 

[dcsapak]

do you have q35 as machine type?

if yes, you can try to set the follwing in the args:

qm set ID -args '-machine type=q35,kernel_irqchip=on'

there was a change in the qemu 4.0 machine type which set the default of this parameter to 'split' from 'on' and some hardware/drivers/os do not handle this well

 

[Possums]

Thank you so much for your quick reply!
I was indeed using q35 machines, and this fix was able to resolve my issue.