It doesn't seem to work on Trisquel 7.
$ dmesg | grep -i blue
[ 2.253342] usb 1-1.3: Product: Bluetooth USB Host Controller
[ 12.112990] Bluetooth: Core ver 2.20
[ 12.113642] Bluetooth: HCI device and connection manager initialized
[ 12.113652] Bluetooth: HCI socket layer initialized
[ 12.113658] Bluetooth: L2CAP socket layer initialized
[ 12.113672] Bluetooth: SCO socket layer initialized
[ 12.608193] Bluetooth: Patch file not found /*(DEBLOBBED)*/
[ 12.608197] Bluetooth: Loading patch file failed
[ 19.418588] Bluetooth: RFCOMM TTY layer initialized
[ 19.418601] Bluetooth: RFCOMM socket layer initialized
[ 19.418612] Bluetooth: RFCOMM ver 1.11
[ 19.725734] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 19.725741] Bluetooth: BNEP filters: protocol multicast
[ 19.725749] Bluetooth: BNEP socket layer initialized