Re: waterfall malfunction (?) with fldigi-3.23.22.8

[Giuseppe C. <giu...@un...>]

I have also installed FLTK from sources, following instructions at https://fedorahosted.org/fldigi/wiki/Documentation/HOWTO/BuildOnDebian, nothing changes.  But now I know more about this malfunction.

The problem depends on the selected software interface to the audio device.  This release of Fldigi works properly when Pulseaudio is selected, whereas it is broken whith OSS.  So it seems to be a bug in the fldigi/OSS interfacing.

The reason why I prefer OSS is that it's more plug-and-play: when I insert the additional USB soundcard into my laptop for using with my rig, the running Pulseaudio server seems to remain unaware of it; but a new device /dev/dsp1 is instantly created under OSS, and fldigi can select and use it quickly.  Another drawback is that, each time the Pulseaudio server is started, the Pulseaudio socket is created under a fresh /tmp/pulse-XXXXXX directory, where XXXXXX is a random string that must be copied each time into fldigi config.


73 de iz1qze Giuseppe

On Wed, 22 Feb 2017, Mauri Niininen wrote:

> 
> Does the problem appear only when using CW modem, or with PSK31 and others
> as well?
> 
> Br Mauri
> 
> 
> On Wed, Feb 22, 2017, 10:29 Larry Levesque <ka...@gm...> wrote:
>       I believe the instructions call for fltk to be build from
>       source.
>       I am not pointing to that as your issue, just noting it.
>
>       I am compiling that version on my PI3 right now and will let you
>       know my results.
>
>       On Wed, Feb 22, 2017 at 03:28:46PM +0100, Giuseppe Ciaccio
>       wrote:
>       > On Wed, 22 Feb 2017, Ed wrote:
>       >
>       > > On Wed, 22 Feb 2017 14:06:19 +0100 (CET)
>       > > Giuseppe Ciaccio <giu...@un...> wrote:
>       > >
>       > >> Hello again,
>       > >>
>       > >> I've installed fldigi-3.23.22.8, selected the CW modem,
>       turned on the
>       > >> receiver, tuned the receiver to a band with some audible cw
>       signals.
>       > >> But the waterfall fails to show the signals, and instead
>       shows a
>       > >> exponentially-decaying band of palette colors.  See
>       attached
>       > >> screenshot.  With the older release of fldigi (3.20.21),
>       however,
>       > >> things works as usual.  Help will be appreciated...
>       > >>
>       > >> Thank you,
>       > >>
>       > >> iz1qze Giuseppe
>       > >
>       > > You either have the wrong sound card selected, or your CW
>       Sweetspot
>       > > needs to be set to 2500.
>       > >
>       > > Did you follow this :
>       > >
>       > >
>       https://fedorahosted.org/fldigi/wiki/Documentation/HOWTO/BuildOnDebian
>       >
>       > Sound card is selected correctly.  I have two ones, and when I
>       switch to the other (or when I switch off the receiver) the
>       waterfall becomes blank so the program is "hearing" something
>       indeed.
>       >
>       > Setting CW sweet spot to 2500 did not help (and was unneeded
>       with fldigi 3.20).
>       >
>       > I'm using Slackware 14.1.  The installation procedure for
>       fldigi was as usual:  ./configure && make && make install
>       >
>       > (fltk 1.3 was previously installed as a prebuilt Slackware
>       package).
>       >
>       > >
>       > > Ed W3NR
>       > >
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> 
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