Hi,

> > +    case 5: /* qxl-5 */
> > +        pci_device_rev = QXL_REVISION_STABLE_V12 + 1;
> > +        io_size = pow2ceil(QXL_IO_RANGE_SIZE);
> > +        break;

> this patch -- commit ed71c09ffd6f -- disables ACPI S3 in the Windows 10
> guest for me, using OVMF and QXL.
> 
> The "Sleep" menu entry disappears from the power button icon/menu at the
> login screen, and "psshutdown -d -t 3" (from the pstools package) also
> stops working (it reports that the computer does not support S3).

Any chance the qxl windows guest driver checks "revision == 4"
instead of "revision >= 4"?

cheers,
  Gerd


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