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Date: Wed, 9 Aug 2017 22:22:39 +0300
From: "Michael S. Tsirkin" <mst@redhat.com>
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Subject: Re: [Qemu-devel] No video for Windows 2000 guest
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To: Programmingkid <programmingkidx@gmail.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>, Richard Henderson <rth@twiddle.net>, ehabkost@redhat.com, "qemu-devel@nongnu.org qemu-devel" <qemu-devel@nongnu.org>

On Wed, Aug 09, 2017 at 09:05:54PM +0300, Michael S. Tsirkin wrote:
> On Wed, Aug 09, 2017 at 01:54:23PM -0400, Programmingkid wrote:
> > 
> > > On Aug 9, 2017, at 1:18 PM, Michael S. Tsirkin <mst@redhat.com> wrote:
> > > 
> > > On Wed, Aug 09, 2017 at 06:37:12PM +0200, Paolo Bonzini wrote:
> > >> On 09/08/2017 16:56, Programmingkid wrote:
> > >>> The default vga card not longer works with a Windows 2000 guest. All I see is a black screen after a the Windows splash screen.
> > >>> 
> > >>> This is the command-line I used: 
> > >>> 
> > >>> qemu-system-i386 -hda Windows2000HD.qcow2 -boot c -m 512
> > >>> 
> > >>> When using the -vga cirrus option video works. Testing was done with QEMU v2.10.0 rc2. 
> > >> 
> > >> Did it work in 2.9?
> > >> 
> > >> Paolo
> > > 
> > > Generally bisect is extremely helpful to debug these issues.
> > 
> > I tried but the acpi issue kept Windows 2000 from booting. 
> 
> You can just revert that on top of each bisect.

IOW after each bisect go
git revert 77af8a2b
test it
then reset back and continue with bisect