Ask a question! No IOMMU detected, please activate it.

Dec 31, 2019
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When I installed pve6.0, I chose the disk ext4 mode, and then I can add a pci device after the following processing!
nano / etc / default / grub
Code:
GRUB_CMDLINE_LINUX_DEFAULT = "quiet"
to
GRUB_CMDLINE_LINUX_DEFAULT = "quiet intel_iommu = on"
update-grub

nano / etc / modules
Code:
vfio
vfio_iommu_type1
vfio_pcioptions
vfio_virqfd
update-initramfs -u -k all

Because I have two fast nvme2 1t disks
Then I reinstalled pve6. When I chose the disk mode, I chose the raidz0 mode.
Then you can't successfully add the pic device through the above method!

My cpu is intel i7 8809g, which definitely supports vt-d!
I am very distressed now, the methods have been tested many times, and they have been reinstalled many times, but I still cannot add a pci device.
prompt:
No IOMMU detected, please activate it. See Documentation for further information.

I translated this article through google. If you can't read it well, I'm very sorry!
Can anyone help?


root@pve:/etc/default# cat /proc/cmdline
initrd=\EFI\proxmox\5.3.13-1-pve\initrd.img-5.3.13-1-pve root=ZFS=rpool/ROOT/pve-1 boot=zfs