@Rafael,

The linux-generic-lts-utopic kernel does not work for me too.

$ sudo apt-get install linux-generic-lts-utopic
<reboot>

$ uname -a
Linux soni 3.16.0-28-generic #38-Ubuntu SMP Sat Dec 13 16:13:28 UTC 2014 x86_64 
x86_64 x86_64 GNU/Linux

$ lsb_release --all
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 14.04.1 LTS
Release:        14.04
Codename:       trusty

$ apt-cache policy linux-generic-lts-utopic
linux-generic-lts-utopic:
  Installed: 3.16.0.28.21
  Candidate: 3.16.0.28.21
  Version table:
 *** 3.16.0.28.21 0
        500 http://archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
        500 http://archive.ubuntu.com/ubuntu/ trusty-security/main amd64 
Packages
        100 /var/lib/dpkg/status

$ lsusb | grep Bluetooth
Bus 001 Device 003: ID 045e:0745 Microsoft Corp. Nano Transceiver v1.0 for 
Bluetooth
Bus 003 Device 002: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle 
(HCI mode)

$ hciconfig 
hci0:   Type: BR/EDR  Bus: USB
        BD Address: 00:1B:10:00:2A:EC  ACL MTU: 1017:8  SCO MTU: 64:0
        DOWN 
        RX bytes:494 acl:0 sco:0 events:20 errors:0
        TX bytes:75 acl:0 sco:0 commands:20 errors:0

$ hcitool scan
Device is not available: No such device

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You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1221995

Title:
  0a12:0001 Bluetooth Dongle (Cambridge Silicon Radio, Ltd) doesn't work
  with 3.11 or 3.13 kernels

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