Hardware support

[Robin Murison]

My hardware suppliers are sure my desktop supports IOMMU and yet when I try to install Qubes 4 the installation says it does not. My basic question is that error reported based on a white list or on the actual presence or absence of the feature.

I have checked with the hardware company that  IOMMU is available and does work and I have also checked with the company that built my machine that I have all the appropriate settings turned on in the BIOS.

Both say I am doing the right thing and that IOMMU should be working and I do not see my processor or mother board specifically on the supported hardware list.

my machine is custom built:

Processor (CPU)	AMD Athlon 5350 Quad Core APU (2.05GHz/AM1) & Radeon™ HD8400
Motherboard	ASUS® AM1M-A: (M-ATX, DDR3, USB 3.0, 6Gb/s)

Thanks for any help

Robin

[Mike Keehan]

Hi Robin,

Qubes does a hardware test to determine if the IOMMU works.

According to Wikipedia's "List of IOMMU-supporting hardware" page,
https://en.wikipedia.org/wiki/List_of_IOMMU-supporting_hardware
there are some ASUS motherboards that do not work correctly with
IOMMU support. You may be unlucky.

Mike.

[awokd]

Mike Keehan wrote on 3/4/19 2:07 PM:

> On Mon, 4 Mar 2019 12:41:23 +0000
> "'Robin Murison' via qubes-users" <qubes...@googlegroups.com> wrote:

>> Both say I am doing the right thing and that IOMMU should be working
>> and I do not see my processor or mother board specifically on the
>> supported hardware list.
>>
>> my machine is custom built:
>>
>> Processor (CPU) AMD Athlon 5350 Quad Core APU (2.05GHz/AM1) &
>> Radeon™ HD8400
>> Motherboard ASUS® AM1M-A: (M-ATX, DDR3, USB 3.0, 6Gb/s)

> Hi Robin,
>
> Qubes does a hardware test to determine if the IOMMU works.
>
> According to Wikipedia's "List of IOMMU-supporting hardware" page,
> https://en.wikipedia.org/wiki/List_of_IOMMU-supporting_hardware
> there are some ASUS motherboards that do not work correctly with
> IOMMU support. You may be unlucky.

There was a bug in earlier versions of Qubes that didn't report AMD
IOMMU correctly. Thought it was fixed in 4.0.1, but try ignoring the
warning and proceeding with the install. If it has trouble creating
sys-net later on, the warning may be accurate. If you can get it
installed enough to get to dom0, run qubes-hcl-report and note the last
5 yes/no lines.