[Qemu-devel] [Bug 685096] Re: USB Passthrough not working for Windows 7 guest

[Michal Suchanek]

I can connect to network with qemu 2.0 with and win 7 pro 64bit guest.

qemu-system-x86_64 -machine accel=kvm -smp 2 -m 1024 -net none -device
usb-ehci,id=usb,bus=pci.0,addr=0x4 -device usb-
host,vendorid=0x0b95,productid=0x772b,id=hostdev0,bus=usb.0  -usb
-usbdevice tablet -hda /srv/rhev/virtual.qcow  -soundhw hda -boot c

Bus 007 Device 014: ID 0b95:772b ASIX Electronics Corp.


Unfortunately there is lack of automation and documentation. Ideally you would 
use something like 
qemu-system-x86_64 -machine accel=kvm -smp 2 -m 1024 -net none -usb2 -usbdevice 
host:0b95:772b -usbdevice  tablet -hda /srv/rhev/virtual.qcow  -soundhw hda 
-boot c

Tthe usb device info from Linux should be enough to determine if the
device is to be connected to usb1 or usb2, right?

** Attachment added: "Win 7 device manager"
   
https://bugs.launchpad.net/qemu/+bug/685096/+attachment/4129559/+files/screenshot-20140611122419.png

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https://bugs.launchpad.net/bugs/685096

Title:
  USB Passthrough not working for Windows 7 guest

Status in QEMU:
  Confirmed
Status in “qemu-kvm” package in Ubuntu:
  Incomplete

Bug description:
  USB Passthrough from host to guest is not working for a 32-bit Windows
  7 guest, while it works perfectly for a 32-bit Windows XP guest.

  The device appears in the device manager of Windows 7, but with "Error
  code 10: device cannot start". I have tried this with numerous USB
  thumbdrives and a USB wireless NIC, all with the same result. The
  device name and functionality is recognized, so at least some USB
  negotiation is taking place.

  I am trying this with the latest git-pull of QEMU-KVM.

  The command line to launch qemu-kvm for win7 is:
  sudo /home/user/local_install/bin/qemu-system-x86_64 -cpu core2duo -m 1024 
-smp 2 -vga std -hda ./disk_images/win7.qcow -vnc :1 -boot c -usb -usbdevice 
tablet -usbdevice host:0781:5150

  The command line to launch qemu-kvm for winxp is:
  sudo /home/user/local_install/bin/qemu-system-x86_64 -cpu core2duo -m 1024 
-smp 2 -usb -vga std -hda ./winxpsp3.qcow -vnc :0 -boot c -usbdevice tablet 
-usbdevice host:0781:5150

  Any help is appreciated.

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