[Bluez-devel] btsco and connection problems

[Bluez-devel] btsco and connection problems

[Sweta Vasudevan]

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Hi all,

I am trying to get audio-bluetooth working on my linux system-I was hoping
that you could help me out with the errors I'm getting. I am using a Fedora
Core4  2.6.16 kernel, DLink DBT 120 USB(revision B3)  and Jabra BT 250
headset.

The headset is detected(hcitool scan), but I'm not able to connect to it:

[root@lirr ~]# hciconfig -a
hci0:   Type: USB
        BD Address: 00:0D:88:AC:18:A7 ACL MTU: 192:8 SCO MTU: 64:8
        UP RUNNING PSCAN ISCAN
        RX bytes:107 acl:0 sco:0 events:14 errors:0
        TX bytes:300 acl:0 sco:0 commands:13 errors:0
        Features: 0xff 0xff 0x0f 0x00 0x00 0x00 0x00 0x00
        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
        Link policy: RSWITCH HOLD SNIFF PARK
        Link mode: SLAVE ACCEPT
        Name: 'lirr.cs.columbia.edu-0'
        Class: 0x120104
        Service Classes: Networking
        Device Class: Computer, Desktop workstation
        HCI Ver: 1.1 (0x1) HCI Rev: 0x20d LMP Ver: 1.1 (0x1) LMP Subver:
0x20d
        Manufacturer: Cambridge Silicon Radio (10)

  [root@lirr ~]# hciconfig hci0 revision
hci0:   Type: USB
        BD Address: 00:0D:88:AC:18:A7 ACL MTU: 192:8 SCO MTU: 64:8
        HCI 16.4
        Chip version: BlueCore02-External
        Max key size: 56 bit
        SCO mapping:  HCI

[root@lirr ~]# hcitool info 00:07:A4:26:8D:3F
Requesting information ...
Can't create connection: Connection timed out

[root@lirr ~]# hcidump -X
HCI sniffer - Bluetooth packet analyzer ver 1.18
device: hci0 snap_len: 1028 filter: 0xffffffff
(this one hangs forever)

[root@lirr ~]# btsco 00:07:A4:26:8D:3F
Error: Failed to connect to SDP server: Function not implemented
Assuming channel 2

Can't connect RFCOMM channel: Resource temporarily unavailable

[root@lirr ~]# btsco -v 00:07:A4:26:8D:3F
btsco v0.42
Device is 1:0
Error: Failed to connect to SDP server: Function not implemented
Assuming channel 2

Voice setting: 0x0060
Can't connect RFCOMM channel: Resource temporarily unavailable


I made sure that hcid and sdpd are running.
I must be missing something obvious, but can't seem figure it out.

Thanks,
sv.

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[Bluez-devel] btsco and connection problems

[Sweta Vasudevan]

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Hi all,

I am trying to get audio-bluetooth working on my linux system-I was hoping
that you could help me out with the errors I'm getting. I am using a Fedora
Core4  2.6.16 kernel, DLink DBT 120 USB(revision B3)  and Jabra BT 250
headset.

The headset is detected(hcitool scan), but I'm not able to connect to it:

[root@lirr ~]# hciconfig -a
hci0:   Type: USB
        BD Address: 00:0D:88:AC:18:A7 ACL MTU: 192:8 SCO MTU: 64:8
        UP RUNNING PSCAN ISCAN
        RX bytes:107 acl:0 sco:0 events:14 errors:0
        TX bytes:300 acl:0 sco:0 commands:13 errors:0
        Features: 0xff 0xff 0x0f 0x00 0x00 0x00 0x00 0x00
        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
        Link policy: RSWITCH HOLD SNIFF PARK
        Link mode: SLAVE ACCEPT
        Name: 'lirr.cs.columbia.edu-0'
        Class: 0x120104
        Service Classes: Networking
        Device Class: Computer, Desktop workstation
        HCI Ver: 1.1 (0x1) HCI Rev: 0x20d LMP Ver: 1.1 (0x1) LMP Subver:
0x20d
        Manufacturer: Cambridge Silicon Radio (10)

  [root@lirr ~]# hciconfig hci0 revision
hci0:   Type: USB
        BD Address: 00:0D:88:AC:18:A7 ACL MTU: 192:8 SCO MTU: 64:8
        HCI 16.4
        Chip version: BlueCore02-External
        Max key size: 56 bit
        SCO mapping:  HCI

[root@lirr ~]# hcitool info 00:07:A4:26:8D:3F
Requesting information ...
Can't create connection: Connection timed out

[root@lirr ~]# hcidump -X
HCI sniffer - Bluetooth packet analyzer ver 1.18
device: hci0 snap_len: 1028 filter: 0xffffffff
(this one hangs forever)

[root@lirr ~]# btsco 00:07:A4:26:8D:3F
Error: Failed to connect to SDP server: Function not implemented
Assuming channel 2

Can't connect RFCOMM channel: Resource temporarily unavailable

[root@lirr ~]# btsco -v 00:07:A4:26:8D:3F
btsco v0.42
Device is 1:0
Error: Failed to connect to SDP server: Function not implemented
Assuming channel 2

Voice setting: 0x0060
Can't connect RFCOMM channel: Resource temporarily unavailable


I made sure that hcid and sdpd are running.
I must be missing something obvious, but can't seem figure it out.

Thanks,
sv.

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Re: [Bluez-devel] btsco and connection problems

[Brad Midgley]

Sweta

> [root@lirr ~]# hcitool info 00:07:A4:26:8D:3F
> Requesting information ...
> Can't create connection: Connection timed out

> [root@lirr ~]# btsco 00:07:A4:26:8D:3F
> Error: Failed to connect to SDP server: Function not implemented
> Assuming channel 2
> 
> Can't connect RFCOMM channel: Resource temporarily unavailable

something more fundamental is wrong with your setup if you can't get the
rfcomm channel connected or an sdp scan. is the headset in pairing mode
when you are trying this stuff?

make sure /etc/bluetooth/hcid.conf has not been customized, try
restarting the bluez utils, etc. that's the sort of thing I do, but
there are probably more systematic ways of narrowing down the problem.

brad


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Re: [Bluez-devel] btsco and connection problems

[Sweta Vasudevan]

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Hello Brad

Yes, the headset is in the pairing mode. I'm not sure if my hcid.conf file
is right:

# HCI daemon configuration file.
#
# $Id: hcid.conf,v 1.7 2004/12/13 14:16:03 holtmann Exp $
#

# HCId options
options {
      # Automatically initialize new devices
      autoinit yes;

      # Security Manager mode
      #   none - Security manager disabled
      #   auto - Use local PIN for incoming connections
      #   user - Always ask user for a PIN
      #
      security user;

      # Pairing mode
      #   none  - Pairing disabled
      #   multi - Allow pairing with already paired devices
      #   once  - Pair once and deny successive attempts
      pairing multi;

      # PIN helper
      #pin_helper /usr/bin/bluepin;

      # D-Bus PIN helper
      dbus_pin_helper;
}

# Default settings for HCI devices
device {
      # Local device name
      #   %d - device id
      #   %h - host name
      name "%h-%d";

      # Local device class
      class 0x120104;
        #class 0x3e0100;

      # Default packet type
      #pkt_type DH1,DM1,HV1;

      # Inquiry and Page scan
      iscan enable; pscan enable;

      # Default link mode
      #   none   - no specific policy
      #   accept - always accept incoming connections
      #   master - become master on incoming connections,
      #            deny role switch on outgoing connections
      lm accept;

      # Default link policy
      #   none    - no specific policy
      #   rswitch - allow role switch
      #   hold    - allow hold mode
      #   sniff   - allow sniff mode
      #   park    - allow park mode
      lp rswitch,hold,sniff,park;

      # Authentication and Encryption (Security Mode 3)
      auth disable;
      encrypt disable;
}

Any suggestion will be of great help.

Thanks

sweta

On 6/11/06, Brad Midgley <bmidgley@xmission.com> wrote:
>
> Sweta
>
> > [root@lirr ~]# hcitool info 00:07:A4:26:8D:3F
> > Requesting information ...
> > Can't create connection: Connection timed out
>
> > [root@lirr ~]# btsco 00:07:A4:26:8D:3F
> > Error: Failed to connect to SDP server: Function not implemented
> > Assuming channel 2
> >
> > Can't connect RFCOMM channel: Resource temporarily unavailable
>
> something more fundamental is wrong with your setup if you can't get the
> rfcomm channel connected or an sdp scan. is the headset in pairing mode
> when you are trying this stuff?
>
> make sure /etc/bluetooth/hcid.conf has not been customized, try
> restarting the bluez utils, etc. that's the sort of thing I do, but
> there are probably more systematic ways of narrowing down the problem.
>
> brad
>
>
> _______________________________________________
> Bluez-devel mailing list
> Bluez-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/bluez-devel
>

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Re: [Bluez-devel] btsco and connection problems

[Brad Midgley]

Sweta

> Yes, the headset is in the pairing mode. I'm not sure if my hcid.conf
> file is right:

the config all looks good.

it's frustrating when even the basic stuff won't go. you could try
another headset or try removing an old pairing if present (see
bluetooth-alsa.sf.net). i switch dongles as one thing to test when
having this kind of trouble...

brad



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Re: [Bluez-devel] btsco and connection problems

[David Greaves]

Brad Midgley wrote:
> Sweta
>
>   
>> Yes, the headset is in the pairing mode. I'm not sure if my hcid.conf
>> file is right:
>>     
>
> the config all looks good.
>
> it's frustrating when even the basic stuff won't go. you could try
> another headset or try removing an old pairing if present (see
> bluetooth-alsa.sf.net). i switch dongles as one thing to test when
> having this kind of trouble...
>   
lsmod??

looking for rfcomm


David

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Re: [Bluez-devel] btsco and connection problems

[Sweta Vasudevan]

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Hello David,


> lsmod??
>
> looking for rfcomm
>
>
> David
>
> --



rfcomm did show up. output of lsmod:

Module                  Size      Used by
snd_bt_sco             15020  1
snd_hwdep               9797  1 snd_bt_sco
hci_usb                17109    2
i2c_i810                5445     0
i2c_algo_bit            9161    1 i2c_i810
i915                   19521      1
drm                    69589      2 i915
parport_pc             27437   1
lp                     12929        0
parport                36489     2 parport_pc,lp
autofs4                19653    1
rfcomm                 37333   0
l2cap                  24641     5 rfcomm
bluetooth              48165   7 hci_usb,rfcomm,l2cap
sunrpc                149093   1
dm_mod                 55765  0
video                  15429      0
button                  6609      0
battery                 9413      0
ac                      4933       0
ipv6                  249601     20
uhci_hcd               32465   0
ehci_hcd               33101   0
hw_random               5977  0
i2c_i801                8909     0
i2c_core               22081    2 i2c_algo_bit,i2c_i801
snd_intel8x0           31965  1
snd_ac97_codec      88673  1 snd_intel8x0
snd_ac97_bus           2496  1 snd_ac97_codec
snd_seq_dummy       3781  0
snd_seq_oss            30885  0
snd_seq_midi_event      7233  1 snd_seq_oss
snd_seq                49677   5
snd_seq_dummy,snd_seq_oss,snd _seq_midi_event
snd_seq_device          9292  3 snd_seq_dummy,snd_seq_oss,snd_seq
snd_pcm_oss            48625  0
snd_mixer_oss          17473  1 snd_pcm_oss
snd_pcm                84933     4
snd_bt_sco,snd_intel8x0,snd_ac97_codec,snd_pcm_oss
snd_timer              25029     2 snd_seq,snd_pcm
snd                    52513       15
snd_bt_sco,snd_hwdep,snd_intel8x0,snd_ac97_codec,snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer

soundcore               9633    1 snd
snd_page_alloc         10825  3 snd_bt_sco,snd_intel8x0,snd_pcm
tulip                  51041         0
3c59x                  44777      0
b44                    24653        0
mii                     5697         2 3c59x,b44
floppy                 63869       0
ext3                  128969      2
jbd                    57173       1 ext3

Thanks,
Sweta.

Thanks,
Sweta.

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Re: [Bluez-devel] btsco and connection problems

[Sweta Vasudevan]

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Hello Brad

>
> the config all looks good.
>
> it's frustrating when even the basic stuff won't go. you could try
> another headset or try removing an old pairing if present (see
> bluetooth-alsa.sf.net). i switch dongles as one thing to test when
> having this kind of trouble...
>
> brad
>
>
> I had already tried this with 2 other dongles(different vendors,
compatible with linux). The d-link dongle - jabra headset combination seems
to have been successful for bluetooth-audio programming, which is why I'm
hoping to get this working. Did you mean trying it with another dongle of
the same model as this one?

I tried to remove the pairing, but there is no link_key entry in
/etc/bluetooth and no bluetooth folder /var/lib; also, the pin file in
/etc/bluetooth was blank. Does this mean that the headset has not been
paired? I've tried re-pairing it by following the instructions in the jabra
manual, but wasn't asked for the passkey again.

I had also tried configuring the security settings like Marcel Holtmann had
suggested to someone else on the mailing-list, but that didn't help
either...

Thanks,
Sweta.

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