Hey guys,
I'm trying to pass through my Saphire R9 280 for countless hours now but it always ends up that the "windows spinning dots" are getting stuck. (Or a bluescreen [KERNEL_SECURITY_CHECK_FAILURE] caused by the CPU config in the VM-XML which i need to set to "host-model" instead of "host-passthrough").
If I switch to VNC (+ CPU mode "host-model" in XML) instead, Windows boots up perfectly.
Switching to Q35-4.2 instead of i440fx-4.2 seem to fix this "boot issue" but as soon as I can access the Desktop of the VM, Win10 freezes, Unraid reboots and a parity check is started.
Btw I'm using the Unraid 6.9.0-beta25 version, because the last stable didn't work for my motherboard.
This GPU is the only GPU in the system, so I tried everything Spaceinvader One explained in his GPU-Passthrough videos.
I tried:
dumping the vbios manually
using the vbios of techpowerup
putting the GPU in a seperate IOMMU-Group
setting the line "append pcie_acs_override=downstream,multifunction initrd=/bzroot video=efifb:off" on the flash's syslinux config
booting the VM with VNC only to install the AMD Driver (which fails)
The diagnostic of the rebooted Server is attached below.
Thanks in advance. Kind Regards,
Basti
tower-diagnostics-20200826-1928.zip