You are not logged in.

#1 2014-07-20 17:29:02

bendavis78
Member
Registered: 2014-06-21
Posts: 41

Cannot scan for bluetooth devices after recent update

I'm trying to connect ny bluetooth keyboard, which worked fine until a recent update. After rebooting, I was able to type for a few seconds and then it stopped working. I unpaired my keyboard and now the bluetooth stack can't find it. I've tried scanning for other devices and they don't show up either.  How can I troubleshoot this? I'm not finding any relevant errors in my syslog.

When running `hcitool scan`, I get this:

$ hcitool scan
Scanning...
$

Some quick details:

$ lsusb | grep -i blue
Bus 001 Device 008: ID 05ac:821a Apple, Inc. Bluetooth Host Controller
Bus 001 Device 004: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
$ hciconfig -a
hci0:   Type: BR/EDR  Bus: USB
        BD Address: 60:C5:47:8F:37:EF  ACL MTU: 1021:8  SCO MTU: 64:1
        UP RUNNING PSCAN ISCAN INQUIRY
        RX bytes:1783 acl:0 sco:0 events:283 errors:0
        TX bytes:10087 acl:0 sco:0 commands:185 errors:0
        Features: 0xff 0xff 0x8f 0xfe 0x9b 0xff 0x79 0x83
        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
        Link policy: RSWITCH HOLD SNIFF PARK
        Link mode: SLAVE ACCEPT
        Name: 'ben-laptop'
        Class: 0x0c010c
        Service Classes: Rendering, Capturing
        Device Class: Computer, Laptop
        HCI Version: 2.1 (0x4)  Revision: 0x2e3
        LMP Version: 2.1 (0x4)  Subversion: 0x4225
        Manufacturer: Broadcom Corporation (15)
$ rfkill list
1: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no
$ dmesg | grep -i blue
[   14.545012] Bluetooth: Core ver 2.19
[   14.545027] Bluetooth: HCI device and connection manager initialized
[   14.545033] Bluetooth: HCI socket layer initialized
[   14.545034] Bluetooth: L2CAP socket layer initialized
[   14.545041] Bluetooth: SCO socket layer initialized
[   20.315777] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   20.315786] Bluetooth: BNEP filters: protocol multicast
[   20.315800] Bluetooth: BNEP socket layer initialized
[   57.608030] Bluetooth: RFCOMM TTY layer initialized
[   57.608040] Bluetooth: RFCOMM socket layer initialized
[   57.608045] Bluetooth: RFCOMM ver 1.11

More details:

Offline

#2 2014-07-23 19:16:29

lokoum
Member
Registered: 2014-07-22
Posts: 18

Re: Cannot scan for bluetooth devices after recent update

Hello,

what is the output of :

hcitool dev

Did you try to restart the bluetooth service ?

sudo modprobe btusb
sudo systemctl restart bluetooth

If your are on a laptop you might have to active the bluetooth from the keyboard (fn+F12 for mine)

Offline

#3 2014-07-23 19:26:33

bendavis78
Member
Registered: 2014-06-21
Posts: 41

Re: Cannot scan for bluetooth devices after recent update

Hi, thanks for responding. I actually found out that I can scan for devices, but the problem is with pairing. I've started a new thread with my current problem here: https://bbs.archlinux.org/viewtopic.php?id=184560

So far I haven't been able to find any help -- I've tried mailing #bluez-users mailing list but I'm not sure if that list is active any more. I've also tried on irc in #bluez and #bluez-users, and on superuser.com.

Offline

Board footer

Powered by FluxBB