[PlanetCCRMA] drop outs with FC8 and latest CCRMA kernel

Mysth-R mysthr21 at gmail.com
Wed Jan 2 02:31:01 2008


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Well, after some tests, It works, but some times, and randomly, I get some
disonnections :
"Zombified blablabla", with a Buffer underrun message. But the latency is
about 21ms !!
However, I have no dopouts...

Cheers,

Mysth-R

2008/1/1, Hector Centeno <hcengar@gmail.com>:
>
> Hi,
>
> Well, I recently tried using 2.6.22 and I had the same kind of problem
> with Jack apps stopping streaming audio from time to time. I had to
> finish a project so I installed Ubuntu in a different partition and
> using their linux-rt kernel things worked quite smooth (going down to
> 8ms latency, no dropouts).
>
>
> Happy new year to you all!
>
> Hector
>
>
> On Dec 31, 2007 1:37 PM, Mysth-R <mysthr21@gmail.com> wrote:
> >
> >
> > 2007/12/28, Hector Centeno <hcengar@gmail.com>:
> > >
> > >
> > >
> > > Hello,
> > >
> > > It wasn't until today that I did some serious audio work using my
> > > desktop with FC8 and CCRMA. I reported some time ago about having
> > > problems with an Edirol FA-101 and Freebob. They seemed to be solved
> > > after a kernel upgrade but now I found that they were just partially
> > > solved. Jack doesn't die anymore while playing back with Ardour but I
> > > get frecuent sound interruptions up to a second long. During these
> > > interruptions the playback cursor in Ardour stops and then restarts. =
I
> > > get the same behaviour with Aqualung (music player that can use jack)=
.
> > > Also I got some system freezes that required hard resetting.  Same
> > > system but using a USB audio interface (M-Audio Transit) and Jack/Als=
a
> > > works fine.
> > >
> > > Hector
> > >
> > > _______________________________________________
> > > PlanetCCRMA mailing list
> > > PlanetCCRMA@ccrma.stanford.edu
> > > http://ccrma-mail.stanford.edu/mailman/listinfo/planetccrma
> > >
> >
> > Yes I got the same issue  with the 2.6.23 last kernel.
> > Downgrading to the 2.6.22 works perfectly. It seems that it is a kernel
> > problem. Perhaps, it will be solve with the next one...
> > Anyway, it works pretty good, and I don't have to re-install Fedora 7 !=
!
> :)
> >
> > tip : don't forget to correctly set your rtirq Script.
> >
> > Happy new year !!!
> >
> >
> > --
> > *
> >
> *************************************************************************=
**************
> > *  {^_^} Mysth-R {^_^}
> > *
> > * http://myspace.com/mysthr
> > * http://myspace.com/aideauditive
> > * http://mysthr.free.fr/Joomla  =3D> Site d=E9di=E9 =E0 l'audio sous
> > Fedora/PlanetCCRMA.
> > *
> >
> *************************************************************************=
**************
>



--=20
*
***************************************************************************=
************
*  {^_^} Mysth-R {^_^}
*
* http://myspace.com/mysthr
* http://myspace.com/aideauditive
* http://mysthr.free.fr  =3D> Site d=E9di=E9 =E0 l'audio sous Fedora/Planet=
CCRMA.
*
***************************************************************************=
************

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Well, after some tests, It works, but some times, and randomly, I get some =
disonnections :<br>&quot;Zombified blablabla&quot;, with a Buffer underrun =
message. But the latency is about 21ms !! <br>However, I have no dopouts...
<br><br>Cheers,<br><br>Mysth-R<br><br><div><span class=3D"gmail_quote">2008=
/1/1, Hector Centeno &lt;<a href=3D"mailto:hcengar@gmail.com">hcengar@gmail=
.com</a>&gt;:</span><blockquote class=3D"gmail_quote" style=3D"border-left:=
 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex=
;">
Hi,<br><br>Well, I recently tried using 2.6.22 and I had the same kind of p=
roblem<br>with Jack apps stopping streaming audio from time to time. I had =
to<br>finish a project so I installed Ubuntu in a different partition and
<br>using their linux-rt kernel things worked quite smooth (going down to<b=
r>8ms latency, no dropouts).<br><br><br>Happy new year to you all!<br><br>H=
ector<br><br><br>On Dec 31, 2007 1:37 PM, Mysth-R &lt;<a href=3D"mailto:mys=
thr21@gmail.com">
mysthr21@gmail.com</a>&gt; wrote:<br>&gt;<br>&gt;<br>&gt; 2007/12/28, Hecto=
r Centeno &lt;<a href=3D"mailto:hcengar@gmail.com">hcengar@gmail.com</a>&gt=
;:<br>&gt; &gt;<br>&gt; &gt;<br>&gt; &gt;<br>&gt; &gt; Hello,<br>&gt; &gt;
<br>&gt; &gt; It wasn&#39;t until today that I did some serious audio work =
using my<br>&gt; &gt; desktop with FC8 and CCRMA. I reported some time ago =
about having<br>&gt; &gt; problems with an Edirol FA-101 and Freebob. They =
seemed to be solved
<br>&gt; &gt; after a kernel upgrade but now I found that they were just pa=
rtially<br>&gt; &gt; solved. Jack doesn&#39;t die anymore while playing bac=
k with Ardour but I<br>&gt; &gt; get frecuent sound interruptions up to a s=
econd long. During these
<br>&gt; &gt; interruptions the playback cursor in Ardour stops and then re=
starts. I<br>&gt; &gt; get the same behaviour with Aqualung (music player t=
hat can use jack).<br>&gt; &gt; Also I got some system freezes that require=
d hard resetting.&nbsp;&nbsp;Same
<br>&gt; &gt; system but using a USB audio interface (M-Audio Transit) and =
Jack/Alsa<br>&gt; &gt; works fine.<br>&gt; &gt;<br>&gt; &gt; Hector<br>&gt;=
 &gt;<br>&gt; &gt; _______________________________________________<br>&gt; =
&gt; PlanetCCRMA mailing list
<br>&gt; &gt; <a href=3D"mailto:PlanetCCRMA@ccrma.stanford.edu">PlanetCCRMA=
@ccrma.stanford.edu</a><br>&gt; &gt; <a href=3D"http://ccrma-mail.stanford.=
edu/mailman/listinfo/planetccrma">http://ccrma-mail.stanford.edu/mailman/li=
stinfo/planetccrma
</a><br>&gt; &gt;<br>&gt;<br>&gt; Yes I got the same issue&nbsp;&nbsp;with =
the 2.6.23 last kernel.<br>&gt; Downgrading to the 2.6.22 works perfectly. =
It seems that it is a kernel<br>&gt; problem. Perhaps, it will be solve wit=
h the next one...
<br>&gt; Anyway, it works pretty good, and I don&#39;t have to re-install F=
edora 7 !! :)<br>&gt;<br>&gt; tip : don&#39;t forget to correctly set your =
rtirq Script.<br>&gt;<br>&gt; Happy new year !!!<br>&gt;<br>&gt;<br>&gt; --
<br>&gt; *<br>&gt; ********************************************************=
*******************************<br>&gt; *&nbsp;&nbsp;{^_^} Mysth-R {^_^}<br=
>&gt; *<br>&gt; * <a href=3D"http://myspace.com/mysthr">http://myspace.com/=
mysthr</a>
<br>&gt; * <a href=3D"http://myspace.com/aideauditive">http://myspace.com/a=
ideauditive</a><br>&gt; * <a href=3D"http://mysthr.free.fr/Joomla">http://m=
ysthr.free.fr/Joomla</a>&nbsp;&nbsp;=3D&gt; Site d=E9di=E9 =E0 l&#39;audio =
sous<br>&gt; Fedora/PlanetCCRMA.
<br>&gt; *<br>&gt; ********************************************************=
*******************************<br></blockquote></div><br><br clear=3D"all"=
><br>-- <br>* *************************************************************=
**************************
<br>*&nbsp;&nbsp;{^_^} Mysth-R {^_^}<br>*<br>* <a href=3D"http://myspace.co=
m/mysthr">http://myspace.com/mysthr</a><br>* <a href=3D"http://myspace.com/=
aideauditive">http://myspace.com/aideauditive</a><br>* <a href=3D"http://my=
sthr.free.fr">
http://mysthr.free.fr</a>&nbsp;&nbsp;=3D&gt; Site d=E9di=E9 =E0 l&#39;audio=
 sous Fedora/PlanetCCRMA.<br>* ********************************************=
*******************************************

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