pvrusb2: Hardware description: Terratec Grabster AV400 pvrusb2: ********** pvrusb2: WARNING: Support for this device (Terratec Grabster AV400) is experimental. pvrusb2: Important functionality might not be entirely working. pvrusb2: Please consider contacting the driver author to help with further stabilization of the driver. pvrusb2: ********** usb 6-1: selecting invalid altsetting 0 usb 6-1: USB disconnect, device number 75