Ok. Now it is getting really weird. I tried to reproduce the behavior on WinXP without libvirt.
Adding the first device works via usb_add (without adding a hub) Adding a second device does not really work - The device is added - A hub is added automatically - But the devices apparently are not enumerated - info usb shows both as 0.0 - The WinXP guest does not display the devices in the device manager Removing the first device reestablishes the function. Both devices are enumerated und functional. Adding, removing and reattaching further devices works fine. So while WinXP requires a hub Win7 works without a hub. Somehow Win7 apparently loses/cannot establish the contact (bus) to the hub. -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]

