The most cheap usb bluetooth sticks will not work with kernel 4.1.0 or 4.2.0 (Wily).
There is a patch upstream which fix this issue:
https://bugzilla.kernel.org/show_bug.cgi?id=103451
---
ApportVersion: 2.18-0ubuntu9
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: norbert 1412 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 15.10
HibernationDevice: RESUME=UUID=d44420f1-113e-442d-93ef-3c67761be6ed
InstallationDate: Installed on 2015-07-26 (40 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150725)
MachineType: Acer Aspire 5737Z
NonfreeKernelModules: nvidia
Package: linux (not installed)
ProcFB:
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-7-generic root=UUID=cfecd393-8411-4a45-8d87-d5c3d0ebb5c1 ro quiet splash
ProcVersionSignature: Ubuntu 4.2.0-7.7-generic 4.2.0
RelatedPackageVersions:
linux-restricted-modules-4.2.0-7-generic N/A
linux-backports-modules-4.2.0-7-generic N/A
linux-firmware 1.147
Tags: wily
Uname: Linux 4.2.0-7-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 06/22/2009
dmi.bios.vendor: Acer
dmi.bios.version: V1.10
dmi.board.name: KALA0
dmi.board.vendor: Acer
dmi.board.version: N/A
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAcer:bvrV1.10:bd06/22/2009:svnAcer:pnAspire5737Z:pvrV1.04:rvnAcer:rnKALA0:rvrN/A:cvnAcer:ct10:cvrN/A:
dmi.product.name: Aspire 5737Z
dmi.product.version: V1.04
dmi.sys.vendor: Acer
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1492532
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.