INTEL ALDER LAKE I5-12500 / UHD 770 passthrough - the dreaded code 43 error
- Thread starter luuk777w
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- code 43 gpu passthough intel
I got a 13900T with integrated UHD 770 and using kernel 6.2.16. Tried everything to make full igpu passthrough to my win11 vm work. But no luck. Always receive the message "Guest has not initialized the Display (yet)" when starting the vm. After the vm started the code 43 error is present. Once I deactivate and activate the UHD device in device manager the error is gone, but there won't be any display on the monitor. I used the latest gfx driver 101.4953 from Intel.
Using Ubuntu full igpu passthrough with UHD 770 is working perfectly with the same kernel and module blacklist settings. I guess it must be a driver issue by intel in windows. Giving up now and buying a T400 for passthrough...
Using Ubuntu full igpu passthrough with UHD 770 is working perfectly with the same kernel and module blacklist settings. I guess it must be a driver issue by intel in windows. Giving up now and buying a T400 for passthrough...
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On 13900K\14900K (and probably whole 12\13\14 line) complete full passthrough (including HDMI) to W10\W11 works in legacy mode with ROMs from https://github.com/gangqizai/igd
IGPU must be set as primary output in BIOS or you will get OpRegion error
Some config's ids\addresses might need adjustment for your case
args: -set device.hostpci0.addr=02.0 -set device.hostpci0.x-igd-gms=0x2 -set device.hostpci0.x-igd-opregion=on -debugcon file:/root/igd_debug.log -global isa-debugcon.iobase=0x402
hostpci0: 0000:00:02.0,legacy-igd=1,romfile=gen12_igd.rom
hostpci1: 0000:00:1f.3,romfile=gen12_gop.rom
machine: pc-i440fx-8.1
Modprobe:
blacklist i915
blacklist snd_hda_intel
options vfio-pci ids=8086:a780,8086:7a50
options vfio_iommu_type1 allow_unsafe_interrupts=1
Kernel:
intel_iommu=on iommu=pt vfio_iommu_type1.allow_unsafe_interrupts=1 pcie_acs_override=downstream,multifunction
IGPU must be set as primary output in BIOS or you will get OpRegion error
Some config's ids\addresses might need adjustment for your case
args: -set device.hostpci0.addr=02.0 -set device.hostpci0.x-igd-gms=0x2 -set device.hostpci0.x-igd-opregion=on -debugcon file:/root/igd_debug.log -global isa-debugcon.iobase=0x402
hostpci0: 0000:00:02.0,legacy-igd=1,romfile=gen12_igd.rom
hostpci1: 0000:00:1f.3,romfile=gen12_gop.rom
machine: pc-i440fx-8.1
Modprobe:
blacklist i915
blacklist snd_hda_intel
options vfio-pci ids=8086:a780,8086:7a50
options vfio_iommu_type1 allow_unsafe_interrupts=1
Kernel:
intel_iommu=on iommu=pt vfio_iommu_type1.allow_unsafe_interrupts=1 pcie_acs_override=downstream,multifunction
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Do you possibly happen to know how to make the legacy IGD mode work with Q35-8.1 instead of i440fx-8.1 like it says is possible in the GitHub page? I can't seem to find anything yet.
This works for me!
My specs are
proxmox-ve: 8.2.0 (running kernel: 6.8.12-2-pve)
Thinkcentre i7-7700T
Intel Graphics HD 630
Hi,
try this here: https://www.derekseaman.com/2024/07...u-vt-d-passthrough-with-intel-alder-lake.html
It works for me.
My specs:
Intel UHD Graphics 770
If you have blacklisted your i915, then remove it from /etc/modprobe.d/blacklist.conf
https://pve.proxmox.com/wiki/PCI_Passthrough#Verify_IOMMU_isolation
try this here: https://www.derekseaman.com/2024/07...u-vt-d-passthrough-with-intel-alder-lake.html
It works for me.
My specs:
Intel UHD Graphics 770
If you have blacklisted your i915, then remove it from /etc/modprobe.d/blacklist.conf
https://pve.proxmox.com/wiki/PCI_Passthrough#Verify_IOMMU_isolation
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I'm posting more details of my Windows 11 VM configurations for future reference. The Thinkcentre m910q I got only have 3 DisplayPort, luckily this romfile works in outputing video feed through a DisplayPort-HDMI converter and successfully display output feed to my monitor/TV.
I get the gen12_igd.rom from https://github.com/gangqizai/igd
I suspect the working reason is the flag
x-igd-opregion=on in args. The romfile path is a hack. The initial directory is at /usr/share/kvm, so this triple ../ is to jump up directory 3 times and get it to the / directory and navigate to the place where romfile is located, feel free to place your files in /usr/share/kvm if it works for you. The reason I put it in /var/lib/vz/dump is because I thought here is the standard location for customized romfiles as I don't like to mixed user settings with Proxmox defaults.For my case, I did not use gen12_gop.rom as it cause Proxmox to freezes when I startup the VM, instead I opt for
pcie_acs_override to pass through the audio from host. My audio is 00:1f.3 Luckily for my case, it works.both video and audio output feed works through DisplayPort-HDMI converter.
Code:
agent: 1
args: -set device.hostpci0.addr=02.0 -set device.hostpci0.x-igd-gms=0x2 -set device.hostpci0.x-igd-opregion=on
bios: ovmf
boot: order=scsi0;ide0;ide2;net0
cores: 8
cpu: host
efidisk0: local-lvm:vm-xxx-disk-0,efitype=4m,pre-enrolled-keys=1,size=4M
hostpci0: 0000:00:02,romfile=../../../var/lib/vz/dump/gen12_igd.rom
hostpci1: 0000:00:1f.3
ide0: none,media=cdrom
ide2: none,media=cdrom
machine: pc-i440fx-9.0
memory: 8192
meta: creation-qemu=9.0.2,ctime=xxxxxxxxxx
name: windows-11
net0: virtio=xx:xx:xx:xx:xx:xx,bridge=vmbr0,firewall=1
numa: 0
ostype: win11
scsi0: local-lvm:vm-xxx-disk-1,iothread=1,size=128G
scsihw: virtio-scsi-single
smbios1: uuid=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
sockets: 1
tpmstate0: local-lvm:vm-xxx-disk-2,size=4M,version=v2.0
usb0: host=046d:c534,usb3=1
usb1: host=0781:5583,usb3=1
vga: none
Code:
# /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_iommu=on iommu=pt pcie_acs_override=downstream,multifunction video=efifb:off video=simplefb:off"Reference:
- https://upsangel.com/htpc-nas/iommu-vfio-gpo-proxmox-pve-pcie直通和核顯hdmi直通設置參數解釋/
- https://www.derekseaman.com/2024/07...u-vt-d-passthrough-with-intel-alder-lake.html
derekseaman passthrough is vgpu-vt-d sharing, its a good refernce. However, its not what I'm looking for as by sharing the vgpu lost the capability for video output feed.
upsangel blog give me the initial idea of having romfile to "feed" into OVMF such that it known how to "communicate" with the passthrough hardware.
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