VM's both with working and non-working USB passthrough give same Windows USB device error

User Support
1

When going into “device manager”, all windows VM’s, working or not, will show under “Other devices”->“Universial Serial Bus (USB) Controller” (and sometimes “XP0001 XENBUS VBD”/“XP0001 XENBUS VIF”). The error is:
“the drivers for this device are not installed”

Strangely, there is then a Universal Serial Bus controllers" section at the end that has a “Inter(R) 82801DB/DBM USB” and a “USB Root Hub” that do not have errors, so maybe this is why it’s working on some?

Anyway, if anyone knows what’s going on, I’d be interested to hear it!

I am able to qvm-copy things to the VM, and right-click->send-to->“Copy to other VM” out of the qube, so QWT is installed. I can also pass a USB device into some of them. (I care about this issue because I’m hoping to get the USB device passthrough to work for all of them, and this seems related)

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What Windows version and QWT version do you have?

3

on one system the qube that had working USB passthrough was windows 10, and the qube that had non-working USB passthrough was windows 7.

qwt version 4.1.69 is on both the windows 10 and windows 7 vms

4

XENBUS VBD device is virtual disk, XENBUS VIF is virtual network - neither is related to USB

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6

Thanks guys! This is solved in every way imaginable.

Both posts are solutions but I can only mark one as a solution.

  • marmarek answered my actual question
  • apparatus resolved my actual problem! (the answer was in the troubleshooting section of the link he gave)