[vfio-users] R9 290 Passthrough not working on Linux

[Donovan Zimmerman]

 From what I recall, Linux cares about the underlying PCI configuration 
whereas Windows does not. Have you tried attaching your GPU to an 
ioh3420 root port? That should rectify the problem.

See also: https://www.redhat.com/archives/vfio-users/2016-May/msg00010.html


On 02/26/2017 09:43 AM, guidugli at gmail.com wrote:
> Thank you for your reply.
>
> I have a Core i7 4770 running on ASROCK Fatal1ty Z87 Professional, 
> 32GB RAM, Sapphire Tri-X R9 290.
>
> I tried using OVMF too and had same results, unfortunately. Windows 
> works fine but Linux do not.
>
>
>
> On Sun, 2017-02-26 at 03:15 +0100, Tomáš M. wrote:
>> What is your HW?
>>
>> I would recommend trying the whole thing on Arch Linux using this 
>> https://wiki.archlinux.org/index.php/PCI_passthrough_via_OVMF
>>
>> Although I don't have experience with OVMF, using seabios happily 
>> with RX480.
>>
>> On Sat, Feb 25, 2017 at 8:59 PM, <guidugli at gmail.com 
>> <mailto:guidugli at gmail.com>> wrote:
>>> Hi,
>>>
>>> For quite some time I have been able to do a pass-through of R9 290 to
>>> Windows VMs using KVM. The problem is that I tried to use Linux and it
>>> does not work. Tried Fedora and Ubuntu and both did not work. Funny
>>> thing is that Ubuntu startup/shutdown screens show on the secondary
>>> monitor but not the system itself.
>>>
>>> I tried using i440FX and Q35, same results. Used the same configuration
>>> I use for my working Windows VMs.
>>>
>>> I had opened a but few months ago but no answer so far.
>>> https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1 
>>> <https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1>
>>> 633777
>>>
>>> I just wonder if someone was able to bypass this problem or has some
>>> suggestion.
>>>
>>> Thank you,
>>>
>>> Carlos
>>>
>>> _______________________________________________
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>>> vfio-users at redhat.com <mailto:vfio-users at redhat.com>
>>> https://www.redhat.com/mailman/listinfo/vfio-users 
>>> <https://www.redhat.com/mailman/listinfo/vfio-users>
>>>
>>
>
>
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-- 
*Donovan Zimmerman*
(216) 939-5045 <tel:+12169395045>
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