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

[Max Power]

Public bug reported:

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.

** Affects: qemu
     Importance: Undecided
         Status: New


** Tags: kvm qemu usb windows7

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

Title:
  USB Passthrough not working for Windows 7 guest

Status in QEMU:
  New

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.