[vfio-users] Cannot fix Error 43 for GTX 680 passed through to win 10 guest

[Sinisa Tkalec]

VBCABLE, The virtual audio cable works fine for steam streaming on windows7.

On 10/16/2015 01:51 AM, root at yoshi.dynu.com wrote:
> All my PCIe slots are occupied or covered by the 3 GPUs.
>
> problem also is that my whole setup is rather old school. 4 monitors, 
> all connected via VGA.
>
> 3 Monitors at my desk and one big old 40'' screen i front of the couch 
> for movies and games (windows guest)
>
> Sound is provided by the onboard soundcard an connected to a sony 
> receiver via toslink.
>
> i will see if i can stream the sound software based (audio jack seems 
> to be a possibility) to the linux host. USB to in-line onboard sound 
> card to the amplifier results in really bad sound quality.
>
> Also updating my setup is not possible for me right now since a new 
> motherboard + 6core CPU is not in the budget.
>
> I hope that i will find a workaround. Thanks a lot again for the 
> support since right now the basic functions are working fine.
>
> Am , schrieb Alex Williamson:
>> On Thu, 2015-10-15 at 18:31 +0000, root at yoshi.dynu.com wrote:
>>> Sound via USB works fine now.. was a problem with the sampling rate.
>>> setting it it 48 kHz solved the background noise.
>>>
>>> Is there any way to fix the error produced when passing through the
>>> onboard sound card? I'd really like to have full surround capability in
>>> the windows VM.
>>
>> This seems to be a problem that Intel has already fixed since most
>> people have pretty good luck using the onboard audio. Unfortunately,
>> X58 is pretty old and there's not likely to be much interest from Intel
>> or the development community to figure out what's wrong.  You should
>> also factor in that your Westmere processor isn't going to have the same
>> virtualization performance as a modern Haswell, which makes the problem
>> even less interesting.
>>
>> If you only need audio out, maybe you can pull it off the HDMI or DVI
>> port of the GTX680 since you're assigning it anyway.  Maybe your monitor
>> already has an analog or SPDIF output.  Are there any PCIe slots left on
>> the board?  A cheap plugin sound card may be an option.  Thanks,
>>
>> Alex
>
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