Re: [Bluez-devel] No sound in bluetooth headset

["Rahul Tank" <tank.rahul@gmail.com>]

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On 12/12/06, Brad Midgley <bmidgley@xmission.com> wrote:
>
> Nel
>
> > Hello all,
> >     I am trying the new bluetooth-alsa plugin as mentioned
> > https://help.ubuntu.com/community/BluetoothAudio.
> >
> >   All goes fine but while playing a file via "aplay" i get absolutely no
> > sound output.The previous way of a btsco kernel module worked out of the
> > box.
> > any pointers ???. ..
>
> it may be a limit of your adapter. I improved the docs above with the
> long troubleshooting list.
>
> Brad
>
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 I had gone through the troubleshooting list and this is my finding . Plz
help me if i am missing something obvious.

 1. output of hciconfig -a
     hci0:   Type: USB
        BD Address: 00:08:1B:87:DC:CD ACL MTU: 192:8 SCO MTU: 64:8
        UP RUNNING PSCAN ISCAN AUTH ENCRYPT
        RX bytes:1076266 acl:110 sco:21037 events:163 errors:0
        TX bytes:51014 acl:75 sco:961 commands:48 errors:0
        Features: 0xff 0xff 0x8f 0xf8 0x18 0x18 0x00 0x80
        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
        Link policy: RSWITCH HOLD SNIFF PARK
        Link mode: ACCEPT MASTER
        Name: 'Mylinux'
        Class: 0x3e0100
        Service Classes: Networking, Rendering, Capturing, Object Transfer,
Audio
        Device Class: Computer, Uncategorized
        HCI Ver: 1.2 (0x2) HCI Rev: 0x512 LMP Ver: 1.2 (0x2) LMP Subver:
0x512
        Manufacturer: Cambridge Silicon Radio (10)

 2.  output of hciconfig hci0 revision
            hci0:   Type: USB
        BD Address: 00:08:1B:87:DC:CD ACL MTU: 192:8 SCO MTU: 64:8
        HCI 18.2
        Chip version: BlueCore3-ROM
        Max key size: 128 bit
        SCO mapping:  HCI

3. output of hcitool info 00:07:a4:5c:64:f0
  Requesting information ...
        BD Address:  00:07:a4:5c:64:f0
        Device Name: Motorola HS850
        LMP Version: 1.2 (0x2) LMP Subversion: 0x5dd
        Manufacturer: Cambridge Silicon Radio (10)
        Features: 0xfc 0xff 0x8b 0xf8 0x18 0x18 0x00 0x80
                <encryption> <slot offset> <timing accuracy> <role switch>
                <hold mode> <sniff mode> <park state> <RSSI> <channel
quality>
                <SCO link> <HV2 packets> <HV3 packets> <u-law log> <A-law
log>
                <CVSD> <paging scheme> <transparent SCO> <broadcast encrypt>

                <enhanced iscan> <interlaced iscan> <interlaced pscan>
                <inquiry with RSSI> <extended SCO> <AFH cap. slave>
                <AFH class. slave> <AFH cap. master> <AFH class. master>
                <extended features>

4. kernel version ; 2.6.17
    bluez-utils and bluez-libs:  3.7


The fact that the btsco kernel module worked perfectly well is confusing me
more..

Any pointers ??

thanks in advance

 cheers,
   Nel.

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