I also have this issue. USB pass-through didn't work on windows 8. I try to use "virt-mamanger", and set USB interface to USB 2.0. Then everything works well. The default one would be USB 1.0.
I don't know how to transform virt-manager's configuration to QEMU's command line arguments. Hope this help. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/685096 Title: USB Passthrough not working for Windows 7 guest To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/685096/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs