On 22/03/2018 18:42, FRANK DB5FP wrote:
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,
a couple of clarifications.
The jt9 process does not directly handle audio samples, they are read
and written by a thread of the wsjtx process.
The jt9 process is monitored by the wsjtx process and failures are
reported via a message box including the reason for failure.
If the source of sound samples stops delivering samples; the wsjtx
waterfall and decoding will also stop.
73
Bill
G4WJS.
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