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I've been trying to use a Linux QEMU virtual machine for USB driver development. I wanted to use USB passthrough but when I check the USB device in the VM, it shows some kind of generated product id and vendor id. Also when I physically plug it in or unplug it, it doesn't respond in the VM.

How do I get it to fully work like it's physically plugged into the VM?

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5
  • Please show us what you've tried so far. How did you configure usb passthrough?
    – larsks
    Commented Jun 2 at 1:14
  • tried all kinds of things, including vfio-pci, "-device usb-redir", "-device usb-host", also tried spicevmc. all of these ended with the same result
    – Mach
    Commented Jun 2 at 11:28
  • lsusb always shows Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub, Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    – Mach
    Commented Jun 2 at 11:43
  • Most likely qemu isn't run with root and you haven't adapt the permission of the USB device (/dev/bus/usb/xxx/xxx) on the host side.
    – Tom Yan
    Commented Jun 2 at 12:40
  • You need to show how you have configured the VM for this.
    – number9
    Commented Jun 7 at 14:52

1 Answer 1

Reset to default
0

Running as root fixed the problem.

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