Re: Problem with soundmodem on Eee PC

[Christof Bodner <christof.bodner@gmx.net>]

Hi Dave,

I am using the soundmodem provided by the Ubuntu team
$ dpkg-query -W soundmodem
soundmodem	0.10-6

This is the output of soundmodemconfig:

on_configtree_selection_changed
selection: cfg: default  chan: Channel 0
Modulator: afsk Demodulator: afsk
Modulator: parameter bps value 1200
Modulator: parameter f0 value 1200
Modulator: parameter f1 value 2200
Modulator: parameter diffenc value 1
Demodulator: parameter bps value 1200
Demodulator: parameter f0 value 1200
Demodulator: parameter f1 value 2200
Demodulator: parameter diffdec value 1
Minimum sampling rate: 9600
Audio IO: type alsa
ALSA: Using sample rate 9600, sample format 2, significant bits 16,
buffer size 3276, period size 102
ALSA: Using sample rate 9600, sample format 2, significant bits 16,
buffer size 3276, period size 102
Real sampling rate: 9600
Joining TxThread
Joining RxThread
Releasing IO
Modulator: afsk Demodulator: afsk
Modulator: parameter bps value 1200
Modulator: parameter f0 value 1200
Modulator: parameter f1 value 2200
Modulator: parameter diffenc value 1
Demodulator: parameter bps value 1200
Demodulator: parameter f0 value 1200
Demodulator: parameter f1 value 2200
Demodulator: parameter diffdec value 1
Minimum sampling rate: 9600
Audio IO: type alsa
ALSA: Using sample rate 9600, sample format 2, significant bits 16,
buffer size 3276, period size 102
ALSA: Using sample rate 9600, sample format 2, significant bits 16,
buffer size 3276, period size 102
Real sampling rate: 9600
delete event
on_configtree_selection_changed
Modulator mode: afsk
Demodulator mode: afsk
Packet IO mode: MKISS
Joining TxThread
Joining RxThread
Releasing IO
selection: cfg: -  chan: -
podex@rosi-atom:~$ sudo soundmodemconfig -v 4
on_configtree_selection_changed
selection: cfg: default  chan: Channel 0
Modulator: afsk Demodulator: afsk
Modulator: parameter bps value 1200
Modulator: parameter f0 value 1200
Modulator: parameter f1 value 2200
Modulator: parameter diffenc value 1
Demodulator: parameter bps value 1200
Demodulator: parameter f0 value 1200
Demodulator: parameter f1 value 2200
Demodulator: parameter diffdec value 1
Minimum sampling rate: 9600
Audio IO: type alsa
ALSA: Using sample rate 9600, sample format 2, significant bits 16,
buffer size 3276, period size 102
ALSA: Using sample rate 9600, sample format 2, significant bits 16,
buffer size 3276, period size 102
Real sampling rate: 9600
Joining TxThread
Joining RxThread
Releasing IO
Modulator: afsk Demodulator: afsk
Modulator: parameter bps value 1200
Modulator: parameter f0 value 1200
Modulator: parameter f1 value 2200
Modulator: parameter diffenc value 1
Demodulator: parameter bps value 1200
Demodulator: parameter f0 value 1200
Demodulator: parameter f1 value 2200
Demodulator: parameter diffdec value 1
Minimum sampling rate: 9600
Audio IO: type alsa
ALSA: Using sample rate 9600, sample format 2, significant bits 16,
buffer size 3276, period size 102
ALSA: Using sample rate 9600, sample format 2, significant bits 16,
buffer size 3276, period size 102
Real sampling rate: 9600
Joining TxThread
Joining RxThread
Releasing IO
Modulator: afsk Demodulator: afsk
Modulator: parameter bps value 1200
Modulator: parameter f0 value 1200
Modulator: parameter f1 value 2200
Modulator: parameter diffenc value 1
Demodulator: parameter bps value 1200
Demodulator: parameter f0 value 1200
Demodulator: parameter f1 value 2200
Demodulator: parameter diffdec value 1
Minimum sampling rate: 9600
Audio IO: type alsa
ALSA: Using sample rate 9600, sample format 2, significant bits 16,
buffer size 3276, period size 102
ALSA: Using sample rate 9600, sample format 2, significant bits 16,
buffer size 3276, period size 102
Real sampling rate: 9600
Joining TxThread
Joining RxThread
Releasing IO
delete event
on_configtree_selection_changed
Modulator mode: afsk
Demodulator mode: afsk
Packet IO mode: MKISS
selection: cfg: -  chan: -

I started the oscilloscope twice and the spectrum analyzer once. The
display got stuck after the first packet arrived. The output of
soundmodem itself is

$ sudo soundmodem -v 4
sm[20838]: unknown node "text"
sm[20838]: unknown node "text"
sm[20838]: unknown node "text"
sm[20838]: unknown node "text"
sm[20838]: unknown node "text"
sm[20838]: unknown node "text"
sm[20838]: unknown node "text"
sm[20838]: unknown node "text"
sm[20838]: mkiss: ifname sm0 mtu 256 hwaddr OE8BCK-2 ipaddr 10.0.0.1
netmask 255.255.255.0 broadcast 10.0.0.255
sm[20838]: unknown node "text"
ALSA: Using sample rate 9600, sample format 2, significant bits 16,
buffer size 3276, period size 102
ALSA: Using sample rate 9600, sample format 2, significant bits 16,
buffer size 3276, period size 102
sm[20838]: unknown kiss packet: 0x80 0xa2
sm[20838]: unknown kiss packet: 0x20 0xa2

$ dmesg
[45458.558881] mkiss: AX.25 Multikiss, Hans Albas PE1AYX
[45458.562150] mkiss: ax0: crc mode is auto.
[45458.576058] mkiss: sm0: Trying crc-smack
[45458.668378] mkiss: sm0: Trying crc-flexnet
[45591.993672] mkiss: ax0: crc mode is auto.
[45592.005084] mkiss: sm0: Trying crc-smack
[45592.099000] mkiss: sm0: Trying crc-flexnet

It decoded not a single packet, but transmitting was a little bit
strange. No, I did not transmit to the ether, only to my loudspeakers.
It seemed that there was a holdup, as there were no packets for some
secondes and then came a lot of them. But it could also be sent this way
from the ahavi and cups daemons which produce them. It did not change
the behaviour after restarting having unloaded the ax25 and mkiss
modules. 

73 de OE8BCK,
Christof

Am Sonntag, den 13.09.2009, 11:26 -0700 schrieb Dave Platt:
> Christof Bodner wrote:
> > Hi,
> > 
> > Soundmodem stopped to work in Ubuntu 8.04, in 7.10 it works fine with
> > OSS. Today I tried it again with ALSA plughw: and it stopped after
> > receiving the first packet. That was reproduceable and occured in the
> > soundmodemconfig modem diagnostic as well as in the soundmodem itself.
> 
> Two questions:
> 
> - Which version are you using?
> 
> - If you run it from the command line, are there any diagnostic
>    or error messages printed when it receives or transmits?
-- 
             (0-0)
---------oOO--(_)--OOo-----------------------------------------------
 Christof Bodner <Christof.Bodner@gmx.net>
   Linux - Life is too short for reboots
         - First they ignore you. Then they laugh at you. Then they
           fight you(*). Then you win. -- Ghandi
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