Proxmox / XCP-NG / Unraid / Ovirt ? for homelab with nvida gpu passthrough?

ThatGuyB · March 23, 2021, 10:17pm

Yes, just edit the qemu config (they are the same for libvirt and qm). Solution discussed here:

nVidia driver crash under Windows 10 KVM with GPU passthrough VFIO

I think I came across this problem recently. This was the fix for me, however I don’t know what version of qemu you’re on. I wasn’t getting code43, however drivers wouldn’t load and I was getting bsod’s and blackscreens. QEMU 4.0: Unable to load graphics drivers/BSOD after driver install using Q35 Starting with QEMU 4.0 the q35 machine type changes the default kernel_irqchip from off to split which breaks some guest devices, such as nVidia graphics (the driver fails to load / black screen / code 43). Switch to full KVM mode instead with <ioapic driver='kvm'/> under libvirts <features> tag or kernel_irqchip=on in the -machine qemu arg. XML should look like so: <features> <acpi/> <apic/> <hyperv> <vendor_id state="on" value="whatever"/> </hyperv> <kvm> <hidden state="on"/> </kvm> <vmport state="off"/> <ioapic driver="kvm"/> </features>

(Exabit’s answer).

Edit: ok, I was wrong about that, they don’t appear to be similar.