Windows 10 VM blacked-out text

[Alex Williamson]

On Fri, 22 Feb 2019 13:33:25 +0800
Zhenyu Wang <zhenyuw at linux.intel.com> wrote:

> On 2019.02.22 13:18:55 +0800, Zhenyu Wang wrote:
> > On 2019.02.21 08:43:07 -0700, Alex Williamson wrote:  
> > > Hi,
> > > 
> > > I'm running a host kernel based on Linus' tree merged with
> > > gvt-next-2019-02-01 in order to test EDID support.  QEMU is latest
> > > qemu.git with Gerd's EDID patches applied.  Guest is Windows 10, fully
> > > updated, device manager shows Intel graphics driver version
> > > 25.20.100.6472.  I tried to install the latest DCH Intel graphics
> > > drivers but if failed to install.  As seen in the attached image, the
> > > desktop has some fundamental usability issues with certain text fields
> > > being blacked out.  For this reason I have no idea why the new DCH
> > > driver failed to install.  How do I get a usable GVT-g VM desktop?
> > >  
> > 
> > We have identified that there's a chicken bit register which could
> > impact render behavior that need to be restored for different VM.
> > Colin will send a patch very soon.
> >   
> 
> Alex, could you try this https://patchwork.freedesktop.org/patch/287394/?
> Will merge it, once it passed our CI test, will send pull for upstream.

Yes, this resolves it.  Thanks,

Alex