permissions: 0.112 PID: 0.098 semantic: 0.094 socket: 0.077 device: 0.076 graphic: 0.072 files: 0.072 other: 0.069 performance: 0.067 boot: 0.065 KVM: 0.055 network: 0.050 debug: 0.048 vnc: 0.044 network: 0.146 files: 0.120 socket: 0.114 PID: 0.102 device: 0.095 other: 0.091 debug: 0.077 boot: 0.061 KVM: 0.039 performance: 0.039 semantic: 0.035 vnc: 0.031 permissions: 0.029 graphic: 0.020 usb passthrough not working anymore Hi, I'm using qemu 2.0.0 with opensuse 13.1 x84_64 bit as host and window7 as guest. Til qemu version 1.6.2 USB passthrough works perfectly, but starting with qemu 2.0.0 passthrough stop working. I can still add the usb device but when I start the guest following message appears: "unable to execute QEMU command 'device_add': 'usb-host' is not a valid device model name" Then the guest will not start. I try it with different usb devices (iphone, stick, hdd), always the same error. Are there any news / hints about this ? Regards Martin Be sure to add the -usb option. What is your command line? See also http://git.qemu.org/?p=qemu.git;a=blob;f=docs/usb2.txt;h=c7a445afcd55fe1f12033d529d668a1306d5a9f4;hb=HEAD#l111 Hi, From qemu-1.7 release version, the old usb-host(host-linux.c) had been removed, re-implemented by libusbx. So you should build qemu with --enable-libusb, then you can use usb pass-through capacity. BTW, Gerd, should we enable libusb by default now? Thanks. Best regards, -Gonglei > -----Original Message----- > From: