So 'm   back with some more information.

It's not a HF related issue, it never occurred during TX(everything is
proper grounded, shielded cables etc. ), only during RX.

Sometimes I get an error message like "Data not feed to soundcard
fast enough"(during TX). But this does not stop the decode process nor
the waterfall.

I've been testing with some kernel parameters, these problems are
Raspberry Pi related. One can effect the acceleration of different USB
types (iso or asynchronous, interrupt etc.), since then I did not see
this problem so often.

But there should be a better error handling between different modules
of wstjx. I can not trace the problem because no debug data is
available.


During my test I found something interesting for other Raspberry Pi
or SBC users. All data, during program execution, is written to /tmp.
This is a big problem because /tmp is part of the root- filesystems and
this is located on a sdcard. This stresses sdcard over normal use ->
 defect.
So one has to use a tmpfilesystem to store everything in RAM (how
big???) or on adiffertent storage location. Because I did not find any
config file to specify the /tmp location.


73
Frank
DB5FP 
  


> I had this if I used more than 5 watts on 40mtrs, it used to knock
> the cat control out as well (ic-9100). Bought a decent screened USB
> lead and no issues now. I assume the RF is still there but it is no
> longer picked up. It is funny that we spend a fortune on radio and
> antenna but use the USB lead from a pound shop.
> 
> Richard G7OED
> 
> From: Black Michael via wsjt-devel 
> Sent: Saturday, March 24, 2018 12:34 PM
> To: wsjt-devel@lists.sourceforge.net 
> Cc: Black Michael 
> Subject: Re: [wsjt-devel] Monitoring stops suddenly in 1.80 and 1.90
> RC2
> 
> That sounds like your audio stream froze.
> Possible causes:
> 
> #1 RF in the shack.  
> #2 USB going to sleep -- this should only happen if PC is left
> unattended.
> 
> This is happening while your operating, right?  In that case RF is
> the likely culprit.  Does happen when you transmit? Lots of potential
> sources can cause this, USB cables, ethernet cables, computer cards.
> We had one guy whose rotor caused it even though it wasn't plugged
> into anything but power.
> 
> 
> de Mike W9MDB
> 
> 
> 
> 
> 
> On Saturday, March 24, 2018, 3:35:53 AM CDT, FRANK DB5FP
> <db...@gmx.de> wrote: 
> 
> 
> 
> >   
> 
> Hi Bill,
> 
> If the WSJT-X Rx level
> > indicator is not showing a level *and* the waterfall stops
> > scrolling, then it is fairly certain that the operating system is
> > no longer delivering audio samples to the application.  
> 
> The indicator is showing a level but it's not moving and the
> progessbar(15sec.) is still moving. 
> 
> 73s
> 
> Frank 
> 
> DB5FP
> 
> 
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