Eu acho que o Bluetooth nesta máquina funciona, pelo menos o hardware faz. Eu já vi isso funcionar brevemente uma vez, o que significa que ele pode funcionar por mais tempo do que apenas alguns segundos.
Eu tive esse problema, mas consegui fazer isso desaparecer: link
Eu tenho este hardware:
sudo bluez-test-adapter list
[ /org/bluez/599/hci0 ]
Name = warmachine-0
Powered = 1
Devices = dbus.Array([], signature=dbus.Signature('o'), variant_level=1)
DiscoverableTimeout = 0
PairableTimeout = 0
Discoverable = 1
Address = 24:0A:64:03:BF:94
Discovering = 0
Pairable = 1
Class = 0x000000
UUIDs = dbus.Array([dbus.String(u'00001000-0000-1000-8000-00805f9b34fb'), dbus.String(u'00001001-0000-1000-8000-00805f9b34fb'), dbus.String(u'0000112d-0000-1000-8000-00805f9b34fb'), dbus.String(u'00001112-0000-1000-8000-00805f9b34fb'), dbus.String(u'0000111f-0000-1000-8000-00805f9b34fb'), dbus.String(u'0000111e-0000-1000-8000-00805f9b34fb'), dbus.String(u'0000110c-0000-1000-8000-00805f9b34fb'), dbus.String(u'0000110e-0000-1000-8000-00805f9b34fb'), dbus.String(u'0000110a-0000-1000-8000-00805f9b34fb'), dbus.String(u'0000110b-0000-1000-8000-00805f9b34fb')], signature=dbus.Signature('s'), variant_level=1)
Do DMesg na inicialização:
[ 9.342995] Bluetooth: Core ver 2.17
[ 9.343006] NET: Registered protocol family 31
[ 9.343007] Bluetooth: HCI device and connection manager initialized
[ 9.343013] Bluetooth: HCI socket layer initialized
[ 9.343015] Bluetooth: L2CAP socket layer initialized
[ 9.343017] Bluetooth: SCO socket layer initialized
[ 9.344379] [drm] Initialized drm 1.1.0 20060810
[ 9.350125] Bluetooth: RFCOMM TTY layer initialized
[ 9.350134] Bluetooth: RFCOMM socket layer initialized
[ 9.350139] Bluetooth: RFCOMM ver 1.11
[ 9.351624] cfg80211: Calling CRDA to update world regulatory domain
[ 9.354582] init: avahi-cups-reload main process (626) terminated with status 1
[ 9.354598] ata2.00: exception Emask 0x10 SAct 0x0 SErr 0x0 action 0x6 frozen
[ 9.354615] ata2.00: irq_stat 0x08000002, interface fatal error
[ 9.354628] ata2.00: failed command: IDENTIFY PACKET DEVICE
[ 9.354643] ata2.00: cmd a1/00:01:00:00:00/00:00:00:00:00/00 tag 7 pio 512 in
[ 9.354643] res 50/00:03:00:24:00/00:00:00:00:00/a0 Emask 0x10 (ATA bus error)
[ 9.354669] ata2.00: status: { DRDY }
[ 9.354680] ata2: hard resetting link
[ 9.356030] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 9.356032] Bluetooth: BNEP filters: protocol multicast
[ 9.356037] Bluetooth: BNEP socket layer initialized
sudo bluez-simple-agent hci0 24:0A:64:03:BF:94 Creating device failed: org.bluez.Error.ConnectionAttemptFailed: Page Timeout
... e por fim.
lsusb; lspci -nnk | grep -iA2net; uname -a; dmesg | egrep -i 'blue|firm'; rfkill list all; hciconfig -a
Bus 002 Device 002: ID 8087:8000 Intel Corp.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8008 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 002: ID 174c:3074 ASMedia Technology Inc.
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 004: ID 1b1c:0c04 Corsair
Bus 003 Device 003: ID 0b05:17cf ASUSTek Computer, Inc.
Bus 003 Device 008: ID 1e7d:3264 ROCCAT
Bus 003 Device 007: ID 1e7d:2d51 ROCCAT Kone+ Mouse
Bus 003 Device 002: ID 174c:2074 ASMedia Technology Inc.
Bus 003 Device 006: ID 1a40:0201 Terminus Technology Inc. FE 2.1 7-port Hub
Bus 003 Device 005: ID 046d:0994 Logitech, Inc. QuickCam Orbit/Sphere AF
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
grep: 2net: invalid context length argument
Linux warmachine 3.13.0-68-generic #111-Ubuntu SMP Fri Nov 6 18:17:06 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
[ 0.189642] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored
[ 9.342995] Bluetooth: Core ver 2.17
[ 9.343007] Bluetooth: HCI device and connection manager initialized
[ 9.343013] Bluetooth: HCI socket layer initialized
[ 9.343015] Bluetooth: L2CAP socket layer initialized
[ 9.343017] Bluetooth: SCO socket layer initialized
[ 9.350125] Bluetooth: RFCOMM TTY layer initialized
[ 9.350134] Bluetooth: RFCOMM socket layer initialized
[ 9.350139] Bluetooth: RFCOMM ver 1.11
[ 9.356030] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 9.356032] Bluetooth: BNEP filters: protocol multicast
[ 9.356037] Bluetooth: BNEP socket layer initialized
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
1: phy0: Wireless LAN
Soft blocked: yes
Hard blocked: no
2: brcmwl-0: Wireless LAN
Soft blocked: yes
Hard blocked: no
hci0: Type: BR/EDR Bus: USB
BD Address: 24:0A:64:03:BF:94 ACL MTU: 1021:8 SCO MTU: 64:1
UP RUNNING PSCAN ISCAN
RX bytes:934 acl:0 sco:0 events:88 errors:0
TX bytes:1739 acl:0 sco:0 commands:80 errors:0
Features: 0xbf 0xfe 0xcf 0xfe 0xdb 0xff 0x7b 0x87
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
Link policy: RSWITCH SNIFF
Link mode: SLAVE ACCEPT
Name: 'warmachine-0'
Class: 0x6c0100
Service Classes: Rendering, Capturing, Audio, Telephony
Device Class: Computer, Uncategorized
HCI Version: 4.0 (0x6) Revision: 0x1000
LMP Version: 4.0 (0x6) Subversion: 0x220e
Manufacturer: Broadcom Corporation (15)
Tenho vários dispositivos Bluetooth aqui, meu telefone e um fone de ouvido, mas eles não são digitalizados. ... e ainda vi esta máquina registrar dispositivos bluetooth, eles simplesmente não ficam assim e depois você não pode escanear nada.
dmesg | egrep -i 'blue|firm'
[ 0.199286] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored
[ 9.554021] Bluetooth: Core ver 2.17
[ 9.554038] Bluetooth: HCI device and connection manager initialized
[ 9.554045] Bluetooth: HCI socket layer initialized
[ 9.554047] Bluetooth: L2CAP socket layer initialized
[ 9.554051] Bluetooth: SCO socket layer initialized
[ 9.556384] Bluetooth: RFCOMM TTY layer initialized
[ 9.556389] Bluetooth: RFCOMM socket layer initialized
[ 9.556392] Bluetooth: RFCOMM ver 1.11
[ 9.556650] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 9.556652] Bluetooth: BNEP filters: protocol multicast
[ 9.556655] Bluetooth: BNEP socket layer initialized
Eu fiz um módulo DKMS que você pode usar com o kernel 3.13, para instalar
wget https://www.dropbox.com/s/9yfcg4e2mn1zcs0/fw-0b05-17cf.hcd
sudo cp fw-0b05-17cf.hcd /lib/firmware/fw-0b05_17cf.hcd
sudo apt-get install build-essential dkms linux-headers-$(uname -r)
wget https://www.dropbox.com/s/ol5r9dai967p6by/btusb-dkms_3.1_all.deb
sudo dpkg -i btusb-dkms_3.1_all.deb
Reinicie e o bluetooth deve funcionar corretamente