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flooded with "SCO data: handle 0 dlen 0"

Bluez-users Stefan Quandt 2 participants 5 messages Nov 8, 2005 Bluetooth drivers

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#0 lore raw

As soon as I connect my Bluetooth-Dongle (Abe UB 20S, BlueSoleil) my syslog are flooded with empty SCO packets.
hcidump reports these with "SCO data: handle 0 dlen 0"
I run OpenSuse-10.0 with bluez-2.21

What goes wrong here?

Thanks
Stefan

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maintainer
#1 lore raw

Hi Stefan,

Quoted 4 lines

As soon as I connect my Bluetooth-Dongle (Abe UB 20S, BlueSoleil) my syslog are flooded with empty SCO packets.
hcidump reports these with "SCO data: handle 0 dlen 0"
I run OpenSuse-10.0 with bluez-2.21

check if this is a Silicon Wave based dongle.

Regards

Marcel

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#2 lore raw

Hi Marcel,

Quoted 3 lines
Quoted 2 lines

As soon as I connect my Bluetooth-Dongle (Abe UB 20S, BlueSoleil) my syslog are flooded with empty SCO packets.

check if this is a Silicon Wave based dongle.

How may I do this?

http://www.holtmann.org/linux/bluetooth/features.html
says the manufacturer is RTX Telecom.

Maybe this helps:
/sys/bus/usb/devices/1-1/idProduct contains 080a
/sys/bus/usb/devices/1-1/idVendor contains 0400

Thanks
Stefan

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maintainer
#3 lore raw

Hi Stefan,

Quoted 11 lines
Quoted 3 lines
Quoted 2 lines

As soon as I connect my Bluetooth-Dongle (Abe UB 20S, BlueSoleil) my syslog are flooded with empty SCO packets.

check if this is a Silicon Wave based dongle.

How may I do this?

http://www.holtmann.org/linux/bluetooth/features.html
says the manufacturer is RTX Telecom.

Maybe this helps:
/sys/bus/usb/devices/1-1/idProduct contains 080a
/sys/bus/usb/devices/1-1/idVendor contains 0400

call "hciconfig -a".

Regards

Marcel

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#4 lore raw

Hi Marcel,

doing "hciconfig -a" (a few seconds after connecting the dongle) gives me
hci0: Type: USB

        BD Address: 00:0C:78:30:B9:1A ACL MTU: 339:4 SCO MTU: 60:9
        UP RUNNING
        RX bytes:441632 acl:0 sco:129750 events:27 errors:0
        TX bytes:345 acl:0 sco:0 commands:24 errors:0
        Features: 0xff 0xff 0x81 0x00 0x18 0x18 0x00 0x00
        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
        Link policy: RSWITCH HOLD SNIFF PARK
        Link mode: SLAVE ACCEPT
        Name: 'BlueZ (0)'
        Class: 0x3e0100
        Service Classes: Networking, Rendering, Capturing
        Device Class: Computer, Uncategorized
        HCI Ver: 1.2 (0x2) HCI Rev: 0x222 LMP Ver: 1.2 (0x2) LMP Subver:

0x222
Manufacturer: RTX Telecom A/S (21)

Thanks
Stefan

Quoted 23 lines · Marcel Holtmann

Hi Stefan,

Quoted 11 lines
Quoted 3 lines
Quoted 2 lines

As soon as I connect my Bluetooth-Dongle (Abe UB 20S, BlueSoleil) my syslog are flooded with empty SCO packets.

check if this is a Silicon Wave based dongle.

How may I do this?

http://www.holtmann.org/linux/bluetooth/features.html
says the manufacturer is RTX Telecom.

Maybe this helps:
/sys/bus/usb/devices/1-1/idProduct contains 080a
/sys/bus/usb/devices/1-1/idVendor contains 0400

call "hciconfig -a".

Regards

Marcel

Quoted 6 lines

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SF.Net email is sponsored by:
Tame your development challenges with Apache's Geronimo App Server. Download it for free - -and be entered to win a 42" plasma tv or your very own
Sony(tm)PSP. Click here to play: http://sourceforge.net/geronimo.php

-------------------------------------------------------
SF.Net email is sponsored by:
Tame your development challenges with Apache's Geronimo App Server. Download it for free - -and be entered to win a 42" plasma tv or your very own Sony(tm)PSP. Click here to play: http://sourceforge.net/geronimo.php
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