Debian Hardware :: Onboard Bluetooth Device Stopped Working After Updating?

I use Bluetooth on my laptop since many month, but afer a recent update (running jessie), my device stopped being usable :

gnome Bluetooth interface say "no Bluetooth device", and here is lsusb :

Code: Select all16:30 mathieu@kubrick ~ % lsusb
Bus 002 Device 003: ID 5986:0315 Acer, Inc
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
16:34 mathieu@kubrick ~ %

and lspci :

Code: Select all16:38 mathieu@kubrick ~ % lspci                   
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5)

[code]....

most sad is :

Code: Select all16:41 mathieu@kubrick ~ % hcitool dev
Devices:
16:41 mathieu@kubrick ~ %