Re: [Xen-users] Successful Xen VGA Passthrough with Sapphire AMD Radeon HD 6450 Display Card

[Teo En Ming <singapore.mr.teo.en.ming@xxxxxxxxx>]

Hi,

I can complete all the 3dmark basic edition v1.3.708 tests in Windows 7 Ultimate HVM domU but I cannot complete all the 3dmark tests in Windows 8 HVM domU. In Windows 8 HVM domU, the screen would turn blank at the Sky Diver demo.

However, I can complete all the 3dmark basic edition tests in *bare-metal* Windows 8.1 OS. Should I upgrade my pure Windows 8 HVM domU to Windows 8.1? After upgrading, will Windows 8.1 HVM domU be able to complete all the 3dmark basic edition tests?

What could the problem be?



--
Yours sincerely,

Teo En Ming
Singapore

On 07/09/2014 03:50, Teo En Ming wrote:

I have rebooted Windows 8 HVM domU a few times, and the artifacts in Youtube videos did not come back.

Now there's yet another problem. I have installed 3dmark version 1.3.708 in Windows 8 HVM domU. When I tried to run all the tests, the screen would turn blank at the Sky Diver demo. The screen would remain blank forever until I destroyed Windows 8 HVM domU (sudo xl destroy <domain id>) and restarted Windows 8 HVM domU (sudo xl create /etc/xen/win8.cfg).

What could be the problem? I have executed 3dmark twice, and the screen would turn blank twice at the Sky Diver demo. In short, I couldn't complete all the 3dmark tests.

--
Yours sincerely,

Teo En Ming
Singapore

On 07/09/2014 00:45, Teo En Ming wrote:

Hi,

I started Windows 8 HVM domU on a fresh boot of dom0, the artifacts in Youtube videos disappeared.

--
Yours sincerely,

Teo En Ming
Singapore

On 06/09/2014 20:07, Robert Rust wrote:

Teo -

It is my understanding that if the physical machine (dom0) is rebooted, then the graphics in the DomU will be back to normal.  I won't dive into too far into the technical reasons for this (perhaps someone else can go into detail if you like... something to do with FLR support?), but basically a DomU reboot doesn't reset the video card properly for another OS session.

I have the same 6450 card in my Xen 4.4 system and the same thing happens with a Ubuntu Linux DomU, though the artifacts show up in more than just YouTube videos.  It does seem to get worse with every reboot until the physical host is rebooted.

-Robert

On Sat, Sep 6, 2014 at 6:50 AM, Teo En Ming <singapore.mr.teo.en.ming@xxxxxxxxx> wrote:

Dear Gordan,

Do you mean that there is no way the problem of artifacts in Youtube videos be solved?

--
Yours sincerely,

Teo En Ming
Singapore

On 06/09/2014 14:27, Gordan Bobic wrote:

That sounds very much like the usual ATI brokenness when virtualized.

Can you confirm it doesn't happen on the first domU boot after a dom0 reboot?

On 6 Sep 2014 07:14, Teo En Ming <singapore.mr.teo.en.ming@xxxxxxxxx> wrote:

Dear Gordan,

I have just attempted rebooting Windows 8 HVM domU 3x times. The GPU
does not crash, there is no performance degradation and Ubuntu 14.04 LTS
dom0 did not crash. I am using Xen 4.4.1.

However, I have also discovered a *new* problem. When I tried to play a
Youtube video, there are artifacts (or short lines) in the Youtube
video. How can I solve this? Please refer to screenshot below.

http://i.imgur.com/bsg3yS1.jpg

Thank you very much.

--
Yours sincerely,

Teo En Ming
Singapore


On 06/09/2014 02:50, Gordan Bobic wrote:

Does rebooting domU with ATI GPUs still result in GPU crashes, degraded performance and sometimes complete dom0 crashes? Are you using a stack that implements bus resets to reset the device?

On 5 Sep 2014 20:22, Teo En Ming <singapore.mr.teo.en.ming@xxxxxxxxx> wrote:

On 04/09/2014 13:29, Teo En Ming wrote:

Hi,

I would like to report successful Xen VGA Passthrough with Sapphire
AMD Radeon HD 6450 display card.

Details are as follows:

Host operating system dom0: Ubuntu 14.04 LTS
Linux kernel: self-compiled 3.16.1
Xen hypervisor: self-compiled 4.4.1
Guest operating system domU: Windows 7 Ultimate HVM domU
Sapphire AMD Radeon HD 6450 Driver DVD: INSTALLED

Please refer to the attached file amd.txt for installation details. I
will write a more detailed installation guide later on. Stay tuned.

Also please refer to attached screenshot showing that AMD RADEON HD
6450 in Display Manager DOES NOT have error code 43. There is NO
yellow exclamation mark beside the AMD Radeon HD 6450 in Display
Manager. Xen VGA Passthrough is fully successful.

Screenshot URL:

http://i.imgur.com/y2tsNsH.jpg

I would like to report that Xen VGA Passthrough with Windows 8 HVM
domU is NOT successful. Although Windows 8 HVM domU can boot up
successfully initially with successful VGA passthrough, it
SUBSEQUENTLY keeps rebooting forever whenever I tried to start Windows
8 HVM domU.

Currently I have a problem. Although I passed through the USB
controllers, the USB keyboard and USB mouse is not working. I need to
open a VNC Viewer to Windows 7 HVM domU and control the USB mouse from
within the VNC Viewer. This is not ideal. Please help me with this
problem so that I can use the USB mouse and USB keyboard directly
within Windows 7 HVM domU.

Thank you very much.

Yours sincerely,

Teo En Ming

Hi,

I would like to report that I have solved the infinite rebooting problem
with Windows 8 HVM domU. I have re-installed Windows 8 HVM domU from
scratch. I can now say that Xen VGA Passthrough with Sapphire AMD Radeon
HD 6450 display card is successful with Windows 8 HVM domU.

Please refer to attached PDF installation guide for more details.

Thank you very much.

--
Yours sincerely,

Teo En Ming
Singapore

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