Bluetooth doesn't work

[Kinka Huang]

Hi all,
Thinkpad X1 2015, ubuntu 15.10, the bluetooth module seems not work well.
Once connect, it prints the following kernel log:

[  196.730943] Bluetooth: hci0 SCO packet for unknown connection handle 0
[  196.730946] Bluetooth: hci0 SCO packet for unknown connection handle 0
[  196.730948] Bluetooth: hci0 SCO packet for unknown connection handle 0
[  196.740970] Bluetooth: hci0 SCO packet for unknown connection handle 0
[  196.740975] Bluetooth: hci0 SCO packet for unknown connection handle 0
[  196.740976] Bluetooth: hci0 SCO packet for unknown connection handle 0
[  201.764755] Bluetooth: hci0 SCO packet for unknown connection handle 257
[  201.764768] Bluetooth: hci0 SCO packet for unknown connection handle 257
[  201.764777] Bluetooth: hci0 SCO packet for unknown connection handle 257

and something I think related while kernel initing:

[    3.738275] usbcore: registered new interface driver btusb
[    3.754215] Bluetooth: hci0: read Intel version: 370810011003110e00
[    3.755429] Adding 7999996k swap on /swap/swapfile.  Priority:-1
extents:66 across:13275644k SSFS
[    3.757145] Bluetooth: hci0: Intel Bluetooth firmware file:
intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq

I think it is a good chance for me to diving into the linux kernel, so
can anyone offer some hints that I could solve this problem.

$ uname -ar
Linux kinka-X1 4.3.0-rc7+ #50 SMP Wed Oct 28 22:49:01 CST 2015 x86_64
x86_64 x86_64 GNU/Linux

Many thanks~

Kinka