Wireless device passthrough issues

S

stewart

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Aug 1, 2022
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I have a Windows 11 VM which has a few USB devices passed-through to it. Among them are two wireless devices: A Sony WH-1000XM4 headset that connects to a Bluetooth dongle and a 2.4GHx Wi-Fi gamepad that connects to its own adapter. I used to have a lot more problems with the headset, but after disconnecting it from the second device it was connected to, I have far fewer problems. Occasionally the headphones lose connection, so I turn the Bluetooth adapter off and on in the OS which re-establishes connection.

I got the gamepad in the last couple of months and it has no problems functioning for the most part -- no latency issues, etc. However, it will disconnect for 1-2 seconds a time at seemingly random intervals other than it's more likely to occur when I've pressed a button, but when it starts, it reoccurs frequently. However, there are times where I have the disconnects occur rarely (once or twice an hour). I'm confident it's not an RF environment issue (I was a wireless engineer in a past life).

The only error event I can see in the OS Event Viewer relates to Net-BT:
1707823521870.png

Here are the specs of the VM:
1707823580696.png

I'd appreciate any input you've got for me in troubleshooting this issue.
 
USB passthrough is not suited for high-bandwidth or low-latency devices. Try PCIe passthrough of a whole USB controller (that is in its own IOMMU group), like you did with the GPU?
 
leesteken said:
USB passthrough is not suited for high-bandwidth or low-latency devices. Try PCIe passthrough of a whole USB controller (that is in its own IOMMU group), like you did with the GPU?
Click to expand...
I have tried that in the past but it causes massive performance issues across the VM.
 
stewart said:
I have tried that in the past but it causes massive performance issues across the VM.
Click to expand...
That's unfortunate. My experience is that it much improves everything (using USB controller provides by a Ryzen CPU or AMD GPU). I don't know what else to do but find a better USB controller to passthrough. Maybe someone else knows an alternative.
 
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