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GPU passthrough
AMD APU
PCIe
echo "blacklist nouveau" >> /etc/modprobe.d/blacklist.conf echo "blacklist nvidia" >> /etc/modprobe.d/blacklist.conf update-initramfs -u
lcpci 26:00.0 VGA compatible controller: NVIDIA Corporation GT218 [GeForce 210] (rev a2) lspci -n -s 26:00.0 26:00.0 0300: 10de:0a65 (rev a2) echo "options vfio-pci ids=10de:0a65" > /etc/modprobe.d/vfio.conf rmmod vfio-pci modprobe vfio-pci dmesg [536167.737504] vfio-pci 0000:26:00.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem [536170.155565] vfio-pci 0000:26:00.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem [536170.173544] vfio_pci: add [10de:0a65[ffffffff:ffffffff]] class 0x000000/00000000
Error code 43
It is generic error code. Possible reasons:
KVM detected
Problem with NVidia card GT218. Device detected under Windows 10, driver installed automatically, but device is not working. Error code 43.
Nvidia drivers detects KVM. KVM can be hidden for guest OS:
- /etc/pve/qemu-server/702.conf
cpu: host,hidden=1
NOTE: Proxmox already contains fixes for Nvidia, so it is not needed.
BAR 3: can't reserve
Lots of errors on host dmesg:
vfio-pci 0000:26:00.0: BAR 3: can't reserve [mem 0xf0000000-0xf1ffffff 64bit pref] ... pcieport 0000:00:03.1: AER: Multiple Uncorrected (Non-Fatal) error received: 0000:26:00.0 pcieport 0000:00:03.1: AER: Multiple Uncorrected (Non-Fatal) error received: 0000:26:00.0 pcieport 0000:00:03.1: AER: Multiple Uncorrected (Non-Fatal) error received: 0000:26:00.0
GPU was used as host main adapter in graphic mode. To fix it add following kernel arguments:
nomodeset textonly video=vesafb:off video=efifb:off
GRUB_CMDLINE_LINUX_DEFAULT="nomodeset textonly video=vesafb:off video=efifb:off"
root=ZFS=rpool/ROOT/pve-1 boot=zfs rootdelay=4 mitigations=off panic=30 nomodeset textonly video=vesafb:off video=efifb:off
update-grub pve-efiboot-tool refresh
This device cannot find enough free resources that it can use. (Code 12)
Solution was to select “Primary GPU” on PCI Device (x-vga=1 option in Proxmox config file)