Comment 28 for bug 2017877

Relevant log entries:

[ 14.405083] Bluetooth: Core ver 2.22
[ 14.405115] NET: Registered PF_BLUETOOTH protocol family
[ 14.405116] Bluetooth: HCI device and connection manager initialized
[ 14.405120] Bluetooth: HCI socket layer initialized
[ 14.405121] Bluetooth: L2CAP socket layer initialized
[ 14.405124] Bluetooth: SCO socket layer initialized
[ 14.442194] usbcore: registered new interface driver btusb
[ 14.454369] Bluetooth: hci0: Legacy ROM 2.5 revision 8.0 build 1 week 45 2013
[ 14.456943] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.7.10-fw-1.80.1.2d.d.bseq
[ 14.531540] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 14.531543] Bluetooth: BNEP filters: protocol multicast
[ 14.531546] Bluetooth: BNEP socket layer initialized
[ 14.603335] Bluetooth: hci0: unexpected event for opcode 0xfc2f
[ 14.619356] Bluetooth: hci0: Intel BT fw patch 0x2a completed & activated
[ 14.674486] NET: Registered PF_ALG protocol family
[ 14.699195] Bluetooth: RFCOMM TTY layer initialized
[ 14.699203] Bluetooth: RFCOMM socket layer initialized
[ 14.699208] Bluetooth: RFCOMM ver 1.11

[ 80.399089] Bluetooth: hci0: SCO packet for unknown connection handle 0
[ 80.399099] Bluetooth: hci0: SCO packet for unknown connection handle 0
[ 80.399101] Bluetooth: hci0: SCO packet for unknown connection handle 0
[ 80.399103] Bluetooth: hci0: SCO packet for unknown connection handle 0
[ 80.399105] Bluetooth: hci0: SCO packet for unknown connection handle 0
[ 80.399106] Bluetooth: hci0: SCO packet for unknown connection handle 0
[ 80.399108] Bluetooth: hci0: SCO packet for unknown connection handle 0
[ 80.399110] Bluetooth: hci0: SCO packet for unknown connection handle 0
[ 99.657119] usb 3-11: USB disconnect, device number 4
[ 99.701466] Bluetooth: hci0: setting interface failed (19)
[ 100.029214] usb 3-11: new full-speed USB device number 7 using xhci_hcd
[ 100.182436] usb 3-11: New USB device found, idVendor=8087, idProduct=07dc, bcdDevice= 0.01
[ 100.182443] usb 3-11: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 100.198003] Bluetooth: hci0: Legacy ROM 2.5 revision 8.0 build 1 week 45 2013
[ 100.198009] Bluetooth: hci0: Intel device is already patched. patch num: 2a

[ 172.057057] usb 3-11: USB disconnect, device number 7
[ 172.407869] usb 3-11: new full-speed USB device number 8 using xhci_hcd
[ 172.557024] usb 3-11: New USB device found, idVendor=8087, idProduct=07dc, bcdDevice= 0.01
[ 172.557029] usb 3-11: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 172.572730] Bluetooth: hci0: Legacy ROM 2.5 revision 8.0 build 1 week 45 2013
[ 172.572737] Bluetooth: hci0: Intel device is already patched. patch num: 2a

[ 189.598594] Bluetooth: hci0: Ignoring error of Inquiry Cancel command

[ 196.210563] usb 3-11: USB disconnect, device number 8
[ 196.210829] Bluetooth: hci0: failed to restart LE scan: status 31
[ 196.523336] usb 3-11: new full-speed USB device number 9 using xhci_hcd
[ 196.676506] usb 3-11: New USB device found, idVendor=8087, idProduct=07dc, bcdDevice= 0.01
[ 196.676511] usb 3-11: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 196.691589] Bluetooth: hci0: Legacy ROM 2.5 revision 8.0 build 1 week 45 2013
[ 196.691597] Bluetooth: hci0: Intel device is already patched. patch num: 2a

[ 225.666603] usb 3-11: USB disconnect, device number 9
[ 225.666971] Bluetooth: hci0: failed to restart LE scan: status 31
[ 226.010936] usb 3-11: new full-speed USB device number 10 using xhci_hcd
[ 226.172153] usb 3-11: New USB device found, idVendor=8087, idProduct=07dc, bcdDevice= 0.01
[ 226.172158] usb 3-11: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 226.187499] Bluetooth: hci0: Legacy ROM 2.5 revision 8.0 build 1 week 45 2013
[ 226.187512] Bluetooth: hci0: Intel device is already patched. patch num: 2a

[ 242.556427] usb 3-11: USB disconnect, device number 10
[ 242.556554] Bluetooth: hci0: sending frame failed (-19)
[ 242.556700] Bluetooth: hci0: HCI reset during shutdown failed

[ 277.334467] usb 3-11: new full-speed USB device number 11 using xhci_hcd
[ 277.483652] usb 3-11: New USB device found, idVendor=8087, idProduct=07dc, bcdDevice= 0.01
[ 277.483657] usb 3-11: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 277.498237] Bluetooth: hci0: Legacy ROM 2.5 revision 8.0 build 1 week 45 2013
[ 277.502124] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.7.10-fw-1.80.1.2d.d.bseq
[ 277.667254] Bluetooth: hci0: unexpected event for opcode 0xfc2f
[ 277.683274] Bluetooth: hci0: Intel BT fw patch 0x27 completed & activated