[vfio-users] Trouble passing through USB Root Hub

[Blank Field]

Usually you can only p-t USB 3.0 controller since all the other ones are
not so dedicated.
On Sep 21, 2015 2:38 PM, "Jonathan Scruggs" <j.scruggs at gmail.com> wrote:

> Hi,
>
> However, just passing through the sound card causes static noises, so I
> want to pass through the controller that it's on. I heard that works better
> for USB sound cards. I just don't know which controller is which and can't
> determine which USB root hub is the right one to pass through.
>
> Thanks,
> Jon
>
> On 21 September 2015 at 11:47, Blank Field <ihatethisfield at gmail.com>
> wrote:
>
>> You wanted to attach a full usb controller or what?
>> Usual virt-manager GUI passes through the USB device using only
>> vendor-device id pair.
>> On Sep 21, 2015 1:44 PM, "Jonathan Scruggs" <j.scruggs at gmail.com> wrote:
>>
>>> Hi,
>>>
>>> I have a USB audio card that makes static noises when passed through.
>>> This is a known issue here, so I thought to pass through the whole USB Root
>>> Hub to the VM.
>>>
>>> My system lists three USB Root hubs 2x EHCI and 1x XHCI ones when doing
>>> lspci.
>>>
>>> The issue is that no matter what port I plug a device in, it always
>>> shows up under the same root hub when using either USB Viewer or lsusb.
>>> Though, lsusb shows me as having four root hubs, but lspci only lists
>>> three. How can I tell what root hub a device is really plugged into so I
>>> can pass it through to the VM?
>>>
>>> Thanks,
>>> Jon
>>>
>>> _______________________________________________
>>> vfio-users mailing list
>>> vfio-users at redhat.com
>>> https://www.redhat.com/mailman/listinfo/vfio-users
>>>
>>>
>
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