Guys this might help you. It worked for me.
:~# nano /etc/default/grub
intel_iommu=on and iommu=pt – in the end of the line
GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_iommu=on and iommu=pt"
: ~# update-grub
To check if IOMMU is enabled:
:~# dmesg | grep -e DMAR -e IOMMU
To find you graphic card use the following line:
:~# lspci | grep VGA
You should get:
00:02.0 VGA compatible controller: Intel Corporation CoffeeLake-S GT2 [UHD Graphics 630]
To black list the driver from host use:
:~# echo "options vfio-pci ids=8086:3e92 disable_vga=1"> /etc/modprobe.d/vfio.conf
Then to update modules:
:~# update-initramfs -u -k all
If it won’t work because there is no link to ESP partition then:
:~# proxmox-boot-tool status
To check which partition is /boot with vfat format:
:~# lsblk -o +FSTYPE
To initialize ESP sync first unmount boot partition:
:~# umount /boot/efi
Then link the vfat partiton with proxmox-boot-tool:
:~# proxmox-boot-tool init /dev/XXXXXXXX where XXXXXXXX is the name of vfat partiton from lsblk +FSYSTEM
Then:
:~# mount -a
Then to update modules:
:~# update-initramfs -u -k all
Reboot
