Wei,
I’ve
tested with a Radeon 4770 and it the VBIOS works without a problem, through
many guest (re)boots, so it seems pretty solid. I tested a linux guest
(fairly standard Fedora 12), Windows XP, and Windows 7 (without accelerated
drivers). The open radeon linux driver works fine.
The
Catalyst driver fails in Windows XP (STOP 0x000000EA, thread stuck in device
driver), windows 7 (STOP 0x00000116, driver fails to properly reset?), and
linux (total system freeze). This seems to be different than the ‘Blank
Screen’ problem you report, as the driver is clearly not functioning
properly.
Doug Magee
From:
xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Huang2, Wei
Sent: Friday, October 08, 2010 9:57 AM
To: Kay, Allen M; Ian Jackson
Cc: Xen-devel
Subject: [Xen-devel] RE: [RFC][QEMU] ATI graphics VBIOS passthru support
Hi Allen,
Yes, Catalyst driver is the one
from public website. The driver still has a minor issue with this VBIOS
patch. The purpose of submitting VBIOS patch is to get community feedbacks.
After we figure out the root cause of black screen, I will formally submit a
patch for inclusion.
Thanks,
-Wei
From: Kay, Allen M
[mailto:allen.m.kay@xxxxxxxxx]
Sent: Friday, October 08, 2010 2:21 AM
To: Huang2, Wei; Ian Jackson
Cc: Xen-devel
Subject: RE: [RFC][QEMU] ATI graphics VBIOS passthru support
Hi Wei,
Is Catalyst driver the one on
AMD website? I think that’s what I have in my win7 guest and it
matches the symptom you are describing. “lspci” reports my
ATI card is a V5700 – although it says v3750 on the box. Where can
I get a working driver?
The patch looks reasonable to me
in general.
Allen
From: Huang2, Wei
[mailto:Wei.Huang2@xxxxxxx]
Sent: Thursday, October 07, 2010 9:06 PM
To: Kay, Allen M; Ian Jackson
Cc: Xen-devel
Subject: RE: [RFC][QEMU] ATI graphics VBIOS passthru support
Hi Allen,
Thanks for testing it out. We
have tested this patch with Radeon 4850, 4870, FirePro V5700 and FirePro M5800.
Unfortunately we don’t have V3750 at hand. It is very possible this patch
isn’t compatible with V3750. We will try to get hold of one for
debugging. For graphics which work with this path, users should be able to get
rid of emulated gfx (such as Cirrus). I have successfully installed a Windows
guest VM using this patch.
I also want to point out that
there is still an issue. Users will see a black screen after installing
Catalyst driver. Even though the screen appears to be black, the driver is
actually functioning correctly (3DMark can be run with external monitor). Our
driver team is currently debugging it and they believe this is easy to fix.
What is your opinion on this
patch (and the solution) in general?
-Wei
From: Kay, Allen M
[mailto:allen.m.kay@xxxxxxxxx]
Sent: Thursday, October 07, 2010 6:58 PM
To: Huang2, Wei; Ian Jackson
Cc: Xen-devel
Subject: RE: [RFC][QEMU] ATI graphics VBIOS passthru support
Hi Wei,
This patch did not cause any
problems with Intel IGD passthrough for me. However, the monitor remained
blank if I pass through ATI Firepro V3750 either as the primary display device
or the secondary device (gfx_passthru=1/0). Passing it through as the
secondary device used to work.
Have you tested the patch with
this graphics card?
Allen
From: Huang2, Wei
[mailto:Wei.Huang2@xxxxxxx]
Sent: Thursday, October 07, 2010 9:57 AM
To: Ian Jackson
Cc: Xen-devel; Kay, Allen M
Subject: [RFC][QEMU] ATI graphics VBIOS passthru support
Hi Ian,
There have been a lot of interest on gfx passthru recently.
This patch enables ATI VBIOS in passthru mode. The guest VM system BIOS (including
Windows boot logo) can now show in passthru screen. We have tested with various
Windows and Linux guest VMs. Please help review it. We are also looking forward
to comments and suggestions from Xen community users.
Signed-off-by: Wei Huang <wei.huang2@xxxxxxx>
Signed-off-by: Wei Wang <wei.wang2@xxxxxxx>
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