Upstream git head still gives me this problem, as does back to 0.14.0. Note however that the same qemu builds, with the same usb stick, work fine using a linux guest.
The same stick, inserted to the same windows version on native hardware also works. So it's not bad hardware, it's not hardware unsupported by windows, and qemu *is* passing the usb device through sufficiently that windows SHOULD be able to make use of it. So this appears to be something specific that windows wants. I've seen mention of windows registry tricks involving removal of top and bottom filters for the device... I haven't tested that to see if that would be a workaround. -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. 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: Confirmed 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. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/685096/+subscriptions
