Device do not support iommu

[chmod711]

After installing Qubes 4.2.3, I am unable to enable sys-net. The system shows the following error:
Qube sys-net has failed to start: Failed to start an HVM qube with PCI devices assigned - hardware does not support IOMMU/VT-d/AMD-Vi.
I have already enabled virtualization in the BIOS. My device is Lenovo T430, and the CPU is i7-3630QM.
I hope somebody who understands this problem can help me to answer how I should solve this problem

[solene]

@chmod711

After installing Qubes 4.2.3

Did it work with a prior version? The wording suggests it.

[chmod711]

No I have not installed the previous version on this device before

[solene]

@chmod711

i7-3630QM

seems you also need VT-d instruction, and that there are some model of T430 that does not support this

Missing iommu/vt-d/amd-vi

On the HCL it says for thinkpad t430 with i7-3632qm and HD 4000: iommu - no. Whereas for the same 3632qm CPU in a Dell XPS 15 it is stated: iommu - yes. As Intel 3632qm supports VT-d, is it because of the mainboard of the t430 that it does not support iommu? The same board with other intel CPUs actually supports iommu. Edit: It is because there are two versions of the 3632qm CPU. The socketed version does NOT support VT-d, only the soldered one. This leads me to a further question: Why did inte…

[chmod711]

I’m not sure if my motherboard supports virtualization, at least I tried to turn it on in the bios interface, but I’m not sure if it works. I have tried to use other means to check whether VT-D is enabled. What should I do if it is not enabled

[solene]

@chmod711

What should I do if it is not enabled

I don’t think Qubes OS works without VT-d as it’s required to “move” devices to qubes like in sys-net or sys-usb. If you really need Qubes OS, consider acquiring hardware that is compatible with it.