Hello,
I'm back with some more Information :
- the soundcard is not a cheapie :-) It's a Terratec Aureon
I've used it several years for decoding NOAA sats, without any
notice, even under linux and on RPI2 together with wxtoimg.
- the problem looks like an RPI USB problem.
I have been searching the internet and found "dwc_otg"
problems.....there are many forum entries and debug hints like kernel
command line options etc., but at least nothing will help solving
that usb-driver (that is my conclusion).
- Main problem is of cours that linux-usb handling will loose some
audiodata -> this causes the /usr/bin/JT9 process to stop working
correctly (lower cpu usage than normal), no decode no waterfall
This stops processing audiodata even after a short wile
audiodatat is back again....
--> wsjt-x gui should supervise JT9 process to observe any
irregularities , like it does when JT9 process is shut down manually.
73
Frank
DB5FP
> Hi Frank,
> I've been running wsjt-x 1.8.0 on a rpi3 for weeks now, using a neat
> qrp-labs receiver variant. FT8 decodes takes about 5-10 seconds on a
> busy band. Speculations follow:
> What kind of sound card are you running ? I'm guessing USB. If so then
> there's certainly a possibility of USB problems or the soundcard
> itself, certainly if it's a cheapie. This should however produce
> messages in dmesg/messages.
> My setup uses a audio-injector zero that connects through the 40-pin
> header and uses the i2s protocol. It has been working nicely with
> just a few hiccups reported in dmesg, but never stopped running or
> required any action. I think it would be a good test to try changing
> at least the sound card, or other stuff to analyze in which direction
> the problem may be. One problem I have is that there's a lot of
> orphaned .wav-files left after decode, it's a problem because I
> use /tmp (50MB) as the storage for these to avoid writing lots of
> stuff to the microSD. The workaround is a cleanup-script executed
> periodically with crontab.
>
> 73's and good luck
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