I have a functional bluetooth adapter, phone and headset but scanning via the Gnome gui or Blueman app shows no available devices. I have managed to to manually connect the devices with much effort. I have confirmed this problem on both Ubuntu 11.10 (work) and 12.04 (home). Hopefully the following information is helpful if there is anything else I can add please let me know.
lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 002: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Bus 005 Device 002: ID 046d:c03d Logitech, Inc. M-BT96a Pilot Optical Mouse
Bus 005 Device 003: ID 04d9:2011 Holtek Semiconductor, Inc.
lsmod | grep blue
bluetooth 153182 31 bnep,rfcomm,btusb
hciconfig dev
hci0: Type: BR/EDR Bus: USB
BD Address: 00:0A:94:03:E5:33 ACL MTU: 310:10 SCO MTU: 64:8
UP RUNNING PSCAN
RX bytes:702802 acl:94 sco:0 events:99217 errors:0
TX bytes:28800848 acl:98747 sco:0 commands:370 errors:0
---
ApportVersion: 1.23-0ubuntu4
Architecture: i386
DistroRelease: Ubuntu 11.10
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
InterestingModules: bnep rfcomm btusb bluetooth
MachineType: Hewlett-Packard HP Compaq dc7700 Convertible Minitower
NonfreeKernelModules: nvidia
Package: bluez 4.96-0ubuntu4
PackageArchitecture: i386
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.1.4-030104-generic root=UUID=328d45ca-37d6-4c3c-abc2-2236eae7daf7 ro quiet splash vt.handoff=7
Tags: oneiric
Uname: Linux 3.1.4-030104-generic i686
UpgradeStatus: Upgraded to oneiric on 2012-04-03 (13 days ago)
UserGroups: adm admin audio cdrom dialout lp lpadmin plugdev sambashare
dmi.bios.date: 01/05/2007
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 786E1 v01.09
dmi.board.name: 0A58h
dmi.board.vendor: Hewlett-Packard
dmi.chassis.asset.tag: MXL71000XQ
dmi.chassis.type: 6
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr786E1v01.09:bd01/05/2007:svnHewlett-Packard:pnHPCompaqdc7700ConvertibleMinitower:pvr:rvnHewlett-Packard:rn0A58h:rvr:cvnHewlett-Packard:ct6:cvr:
dmi.product.name: HP Compaq dc7700 Convertible Minitower
dmi.sys.vendor: Hewlett-Packard
hciconfig:
hci0: Type: BR/EDR Bus: USB
BD Address: 00:0A:94:03:E5:33 ACL MTU: 310:10 SCO MTU: 64:8
UP RUNNING PSCAN ISCAN
RX bytes:3161377 acl:41 sco:61831 events:675 errors:0
TX bytes:4704 acl:43 sco:0 commands:615 errors:0
mtime.conffile..etc.bluetooth.audio.conf: 2012-02-29T06:10:40.016680
rfkill:
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
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