I have done the suggested in comment 23 , but the problem persist, after i lunch the guest, i receive the following erros, and lsusb in the guest doesnt show the attached usb device:
Host: ll /dev/bus/usb/001/ crw-rw-r-- 1 libvirt-qemu kvm 189, 9 Mar 29 21:21 010 lsusb: Bus 001 Device 010: ID 0cf3:9271 Atheros Communications, Inc. AR9271 802.11n syslog Mar 29 21:21:57 ivan-desktop kernel: [168754.517390] usb 1-1: reset high-speed USB device number 10 using xhci_hcd Mar 29 21:21:57 ivan-desktop kernel: [168754.666064] xhci_hcd 0000:00:10.0: xHCI xhci_drop_endpoint called with disabled ep ffff88010a264600 Mar 29 21:21:57 ivan-desktop kernel: [168754.666080] xhci_hcd 0000:00:10.0: xHCI xhci_drop_endpoint called with disabled ep ffff88010a264648 Mar 29 21:21:57 ivan-desktop kernel: [168754.666086] xhci_hcd 0000:00:10.0: xHCI xhci_drop_endpoint called with disabled ep ffff88010a264690 Mar 29 21:21:57 ivan-desktop kernel: [168754.666090] xhci_hcd 0000:00:10.0: xHCI xhci_drop_endpoint called with disabled ep ffff88010a2646d8 Mar 29 21:21:57 ivan-desktop kernel: [168754.666095] xhci_hcd 0000:00:10.0: xHCI xhci_drop_endpoint called with disabled ep ffff88010a264720 Mar 29 21:21:57 ivan-desktop kernel: [168754.666099] xhci_hcd 0000:00:10.0: xHCI xhci_drop_endpoint called with disabled ep ffff88010a264768 libvirt-bin 1.2.8-0ubuntu11.4 qemu 2.1+dfsg-4ubuntu6.4 Ubuntu 14.10 3.19.2-031902-generic -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1392504 Title: libvirt not relabeling devices on USB Passthrough Status in QEMU: New Status in libvirt package in Ubuntu: Triaged Bug description: After upgrading from Ubuntu 14.04 to Ubuntu 14.10 USB passthrough in QEMU (version is now 2.1.0 - Debian2.1+dfsg-4ubuntu6.1) is not working any more. Already tried to remove and attach the USB devices. I use 1 USB2 HDD + 1 USB3 HDD to a virtual linux machine; 1 USB2 HDD to a virual FNAS machine and a USB 2camera to virtual Win7 machine. All these devices are not working any more. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1392504/+subscriptions
