[Xen-devel] RE: [RFC][QEMU] ATI graphics VBIOS passthru support

["Huang2, Wei" <Wei.Huang2@xxxxxxx>]

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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