bluetooth doesn't turn on 11.04

[syldeb35]

Since linux kernel version 2.6.38-7 the bluetooth cannot be turned on. It works when rebooting on 2.6.37 kernel.
The applet show activate bluetooth. when clicking on it nothing happen.
this bug seems duplicate of #750014 : https://bugs.launchpad.net/ubuntu/+source/gnome-bluetooth/+bug/750014

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-8-generic 2.6.38-8.40
Regression: Yes
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.38-8.40-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC262 Analog [ALC262 Analog]
   Subdevices: 0/1
   Subdevice #0: subdevice #0
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC262 Analog [ALC262 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: syl 2049 F.... pulseaudio
 /dev/snd/pcmC0D0p: syl 2049 F...m pulseaudio
CRDA: Error: [Errno 2] Aucun fichier ou dossier de ce type
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xc0100000 irq 49'
   Mixer name : 'Realtek ALC262'
   Components : 'HDA:10ec0262,11790660,00100302 HDA:11c11040,11790001,00100200'
   Controls : 20
   Simple ctrls : 13
Date: Tue Apr 5 09:50:57 2011
Frequency: Once a day.
HibernationDevice: RESUME=UUID=3bc1b2a1-ac9c-4c2d-a1af-f76704c89e6e
MachineType: TOSHIBA Qosmio G50
ProcEnviron:
 LANGUAGE=fr_FR:fr:en_GB:en
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=f6c31599-430c-47fd-9cdf-00ade91283f1 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-2.6.38-8-generic N/A
 linux-backports-modules-2.6.38-8-generic N/A
 linux-firmware 1.49
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/16/2009
dmi.bios.vendor: TOSHIBA
dmi.bios.version: Version 2.10
dmi.board.name: Portable PC
dmi.board.vendor: TOSHIBA
dmi.board.version: Version A0
dmi.chassis.asset.tag: 0000000000
dmi.chassis.type: 10
dmi.chassis.vendor: TOSHIBA
dmi.chassis.version: Version 1.0
dmi.modalias: dmi:bvnTOSHIBA:bvrVersion2.10:bd02/16/2009:svnTOSHIBA:pnQosmioG50:pvrPQG55E-04Y00PFR:rvnTOSHIBA:rnPortablePC:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0:
dmi.product.name: Qosmio G50
dmi.product.version: PQG55E-04Y00PFR
dmi.sys.vendor: TOSHIBA