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    <font size="-1"><font face="DejaVu Sans Mono">Hi, <br>
        <font size="-1">late for this<font size="-1">, but problem
            persists in 0.43<font size="-1"> <font size="-1">release.<br>
              </font></font></font></font></font></font><font size="-1"><font
        face="DejaVu Sans Mono"><font size="-1"><font size="-1"><font
              size="-1"><font size="-1"><font size="-1"><font
                    face="DejaVu Sans Mono"><font size="-1"><font
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                                                          size="-1"><font
                                                          size="-1"><font
                                                          size="-1"><font
                                                          size="-1"><font
                                                          size="-1"><font
                                                          size="-1"><font
                                                          size="-1"><font
                                                          size="-1"><font
                                                          size="-1"><a class="moz-txt-link-freetext" href="https://sourceforge.net/tracker/?func=detail&amp;aid=3602109&amp;group_id=55736&amp;atid=478070">https://sourceforge.net/tracker/?func=detail&amp;aid=3602109&amp;group_id=55736&amp;atid=478070</a></font></font>
                                                          </font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font><font
                  size="-1"><br>
                  I confirm it has to do with latency: unde<font
                    size="-1">r ~20ms, <font size="-1">bu<font
                        size="-1">g occurs. Also o<font size="-1">ccurs
                          when <font size="-1">c<font size="-1">hanging
                              sound<font size="-1"> config.<br>
                                <font size="-1">T<font size="-1">wo
                                    things:<br>
                                    <font size="-1">-as said, pd should<font
                                        size="-1">n't recreate <font
                                          size="-1">jack client on each
                                          dsp on<font size="-1">. Other
                                            problem is that <font
                                              size="-1">a</font> jack
                                            patch is lost and replaced
                                            by str<font size="-1">ai<font
                                                size="-1">gh</font>t <font
                                                size="-1">connection (pd
                                                0 -<font size="-1">&gt;
                                                  <font size="-1">system
                                                    out 1 etc...). Very
                                                    annoying<font
                                                      size="-1"> for who
                                                      <font size="-1">use
                                                        comple<font
                                                          size="-1">x
                                                          jack-patches...<br>
                                                          <font
                                                          size="-1"><a class="moz-txt-link-freetext" href="http://sourceforge.net/tracker/?func=detail&amp;aid=3519504&amp;group_id=55736&amp;atid=478070">http://sourceforge.net/tracker/?func=detail&amp;aid=3519504&amp;group_id=55736&amp;atid=478070</a><br>
                                                          <br>
                                                          <font
                                                          size="-1">-
                                                          &gt;20ms <font
                                                          size="-1">latency
                                                          is very high<font
                                                          size="-1"> for
                                                          live
                                                          processing<font
                                                          size="-1">:</font>
                                                          I calculated
                                                          pd adds 22ms<font
                                                          size="-1">. <font
                                                          size="-1">The
                                                          round trip
                                                          latency in the
                                                          low<font
                                                          size="-1">er
                                                          stable state
                                                          for me at 48K
                                                          is</font> 88ms
                                                          (<font
                                                          size="-1">measured
                                                          w</font></font></font>ith
                                                          jdelay tool,
                                                          with RME multi<font
                                                          size="-1">face</font>)<font
                                                          size="-1">! <font
                                                          size="-1">make
                                                          a sound, have
                                                          a coffe<font
                                                          size="-1">e
                                                          and come back
                                                          to listen (a
                                                          bit
                                                          exaggerated <span
class="moz-smiley-s3"><span> ;-) </span></span><font size="-1">)</font>...<br>
                                                          </font><br>
                                                          <font
                                                          size="-1"><font
                                                          size="-1">rr<br>
                                                          <br>
                                                          </font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font>
    <div class="moz-cite-prefix">Le 27. 11. 12 10:20, Roman Haefeli a
      &eacute;crit&nbsp;:<br>
    </div>
    <blockquote cite="mid:1354008058.2219.25.camel@yoyo5" type="cite">
      <pre wrap="">Hi all

Johnny-come-lately I am . . .

I've experienced this problem since 0.43 (vanilla and extended), I
believe, but I haven't really investigated it, because it didn't happen
that often and I wasn't able to reliably reproduce it. Now I figured out
a way to reliably reproduce it. It seems the likeliness is related to
jackd's latency settings. The shorter the latency, the likelier is pd
going to freeze. With a setting of 128 frames/period and 2
periods/buffer, I can reliably freeze pd by turning DSP off and on. 

The problem seems related to the fact that switching DSP also switches
the jack client on and off. I think the preferred way would be to be
able to switch DSP on/off independently from switching audio back-end
on/off.

@Miller
Are you still planning to seperate dsp switching from audio backe-end
switching for 0.44?

Roman



On Mit, 2012-11-21 at 20:35 -0200, Esteban Viveros wrote:
</pre>
      <blockquote type="cite">
        <pre wrap="">Hello,


I'm using pd-extended 0.43.4, installed via Hans-Cristoph Steiner ppa.
I'm using this version because I can't install the stable version in
Ubuntu 12.04.


The problem is, when I start pd with Jack in -rt mode or wherever
mode, if I turn on dsp, they work well, but if I turn off, and try to
turn on yet dsp, pd-extended freeze...

Closing Qjackctl (after some time ubuntu can close that)
pd-extended returns to work, and I can use on alsa directly
sucessfull..


Someone knows where I can comunicate this bug to the developers? Is
here the place?


Thanks a lot!


-- 


Esteban Viveros

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(11) 2738 7868

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<a class="moz-txt-link-freetext" href="http://expurgacao.art.br/">http://expurgacao.art.br/</a>



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</pre>
      </blockquote>
      <pre wrap="">


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