[vfio-users] Host can't wake from suspend after running a passthrough VM

Ryan A Young rayoung at utexas.edu
Sat Oct 22 00:09:54 UTC 2016

I will give 4.8 a try, thanks for the heads up!

On Fri, Oct 21, 2016 at 6:58 PM, Alex Williamson
<alex.williamson at redhat.com> wrote:
> On Thu, 20 Oct 2016 20:40:24 -0500
> Ryan A Young <rayoung at utexas.edu> wrote:
>> After I start and then shutdown my passthrough VM and then suspend the
>> host, it won't wake from suspend anymore. As in, once in S3, pressing
>> the power button simply has no effect. I have to press the reset
>> button (and sometimes that doesn't work either) and restart the
>> machine. Suspend works correctly if I never start the VM.
>> Has anyone seen this issue before?
>> Hardware: i5-4690, ASRock H97, GTX 1060.
>> Software: Fedora 24, kernel 4.7.7, qemu 2.6.2, GTX 1060 video and
>> audio taken by vfio-pci, OVMF VM with Windows 10 managed by libvirt.
> Try a v4.8 kernel, I was doing some testing on a Fedora v4.7 system and
> seeing a number of strange things after running a VM with device
> assignment.  Disabling KVM resolved the problem, but is clearly not a
> useful workaround.  I wasn't able to reproduce on v4.8, which makes me
> think KVM in v4.7 might have some issues.

- Ryan

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