this bug cause kernel module btusb not autoload.
$ lsb_release --all
No LSB modules are available.
Distributor ID: Ubuntu
Description:Ubuntu 14.04.2 LTS
Release:14.04
Codename: trusty
$ uname -r
3.16.0-31-generic
$ lsusb | grep Bluetooth
Bus 007 Device 002: ID 0a12:0001 Cambrid
Public bug reported:
missing file for device intel wireless 3165
dmesg
[ 3782.289822] Intel(R) Wireless WiFi driver for Linux, in-tree:
[ 3782.289825] Copyright(c) 2003- 2014 Intel Corporation
[ 3782.290709] iwlwifi :03:00.0: Direct firmware load for
iwlwifi-3165-12.ucode failed with error -
** Description changed:
missing file for device intel wireless 3165
dmesg
[ 3782.289822] Intel(R) Wireless WiFi driver for Linux, in-tree:
[ 3782.289825] Copyright(c) 2003- 2014 Intel Corporation
[ 3782.290709] iwlwifi :03:00.0: Direct firmware load for
iwlwifi-3165-12.ucode fail
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