[ 5763.622215] usb 7-1: new full-speed USB device number 3 using uhci_hcd [ 5763.808452] usb 7-1: New USB device found, idVendor=0a5c, idProduct=2101, bcdDevice= 1.00 [ 5763.808491] usb 7-1: New USB device strings: Mfr=1, Product=2, SerialNumber=... [ 5763.808519] usb 7-1: Product: Acer Module [ 5763.808526] usb 7-1: Manufacturer: Broadcom Corp [ 5764.671785] Bluetooth: RFCOMM TTY layer initialized [ 5764.671816] Bluetooth: RFCOMM socket layer initialized [ 5764.671845] Bluetooth: RFCOMM ver 1.11 [ 5805.390988] NET: Registered protocol family 38 [ 5818.782457] input: ... (AVRCP) as /devices/virtual/input/input20 [ 7191.826243] usb 7-1: USB disconnect, device number 3 [ 8413.127391] loop16: detected capacity change from 0 to 8448