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[Launchpad Bug Tracker <1406106@xxxxxxxxxxxxxxxxxx>]

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The Bluetooth adapter is detected and apparently working but, when
choosing "Configure a new device", the device list is always empty (it
cannot see any BT device around).

But, if I boot into Windows 8 just before booting into Ubuntu, the
adapter works perfectly and it sees all BT devices. It seems the Windows
8 driver is performing some activation to the BT adapter.

Test case:

Step 1: power on the Sony VAIO SVF1531C5E and boot into Ubuntu 14.04.1.
Step 2: type "dmesg | grep Bluetooth" and look at the output. Notice the timeout error shown at the end:

[   15.691891] Bluetooth: Core ver 2.19
[   15.691912] Bluetooth: HCI device and connection manager initialized
[   15.691918] Bluetooth: HCI socket layer initialized
[   15.691920] Bluetooth: L2CAP socket layer initialized
[   15.691926] Bluetooth: SCO socket layer initialized
[   19.571783] Bluetooth: RFCOMM TTY layer initialized
[   19.571794] Bluetooth: RFCOMM socket layer initialized
[   19.571799] Bluetooth: RFCOMM ver 1.11
[   19.619432] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   19.619435] Bluetooth: BNEP filters: protocol multicast
[   19.619442] Bluetooth: BNEP socket layer initialized
[   21.772160] Bluetooth: hci0 command 0x1003 tx timeout

Step 3: try to list BT devices by clicking on the bluetooth icon at the top right of the screen and then selecting "Configure a new device". The device's list will be empty: it should list all bluetooth-enabled devices around.
Step 4: reboot the laptop and boot into a Windows partition (mine is Windows 8.1).
Step 5: wait until it is completely booted, then just reboot.
Step 6: boot into Ubuntu again.
Step 7: type "dmesg | grep Bluetooth" and look at the output. This time there is no "hci0 command 0x1003 tx timeout" message at the end:

[   15.569891] Bluetooth: Core ver 2.19
[   15.569911] Bluetooth: HCI device and connection manager initialized
[   15.569918] Bluetooth: HCI socket layer initialized
[   15.569921] Bluetooth: L2CAP socket layer initialized
[   15.569930] Bluetooth: SCO socket layer initialized
[   19.571790] Bluetooth: RFCOMM TTY layer initialized
[   19.571801] Bluetooth: RFCOMM socket layer initialized
[   19.571806] Bluetooth: RFCOMM ver 1.11
[   19.719275] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   19.719278] Bluetooth: BNEP filters: protocol multicast
[   19.719285] Bluetooth: BNEP socket layer initialized

Step 8: try to list BT devices around by clicking on the bluetooth icon
at the top right of the screen, and then selecting "Configure a new
device". The device's list will have all the bluetooth devices around,
and you will be able to pair them perfectly.

Another useful information:

miguel@vaio:~$ lsb_release -rd
Description:	Ubuntu 14.04.1 LTS
Release:	14.04

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

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.16.0-28-generic 3.16.0-28.38~14.04.1
ProcVersionSignature: Ubuntu 3.16.0-28.38~14.04.1-generic 3.16.7-ckt1
Uname: Linux 3.16.0-28-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Dec 28 15:16:25 2014
InstallationDate: Installed on 2014-05-02 (240 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
SourcePackage: linux-lts-utopic
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: linux (Ubuntu)
     Importance: Low
         Status: Incomplete


** Tags: amd64 apport-bug trusty
-- 
Sony VAIO SVF1531C5E Bluetooth adapter (0489:e062) does not see BT devices
https://bugs.launchpad.net/bugs/1406106
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