Re: [seq24-users] Sync Problem using Sooperlooper as jack master and seq24 as slave

[Aurelien <tyr...@fr...>]

Hello again,

I've found today the reason of all this these troubles. It was pure
"hasard". I'm using netjack with this machine. The fact is that the
script runs jack_netsource on the master machine even if the slave
machine is not there. If the slave machine is not connected, I get this
weird latency, when it's connected, everything turns back well.
Couldn't say why, but if someone has the same problem, here is a way to
explain it.

On Thu, Jul 02, 2009 at 10:12:29AM +0200, Aurelien wrote :
> Hello
> (First of all, sorry, I didn't find the time to write my patch files and
> send them here)
> 
> I'm exepriencing some troubles, quite weird and not so reproductible,
> with MIDI synchronization between seq24 and other stuffs.
> 
> I've got to describe a bit my setup to make this mail understandable.
> 
> So, I use Sooperlooper as Jack Timebase Master, and as a live-looper, of
> course.
> I then use seq24 as a a sequencer controlling several instances of
> AlsaModularSynth, and one of Tapeutape (a sampler), and also Q Light
> Controller (a light controller package).
> 
> I've made some patches in seq24 so that I can bind a MIDI control to
> start and stop playback.
> 
> Now, here is the problem:
> Sometimes, all work fine, when I hit the playback MIDI binding or the
> space key, sequences begin to play with tempo given by SooperLooper. I
> can change SooperLooper tempo, it works really fine.
> I mean, starting playback is "instantaneous" (as much as possible) with
> the MIDI Signal.
> 
> Some other times, it's not the same. When I hit the playback MIDI
> binding, there is a really big delay (like 5-10s) before it begins to
> start playback.
> 
> One important thing is that everything is launched using a bash script,
> so that the init sequence is the very same each time I power up the
> computer. The only thing changing from one session to another is the
> time when I've to unplug/plug my MIDISPORT interface as it's not
> detected by udev when plugged at boot.
> Another important thing is that when it doesn't work, it doesn't work
> until I powercycle the COMPUTER!!!
> 
> I know you probably cannot give me a solution or answer with so
> "etheral" informations, but I first would like to know in which
> direction I should look. I'm not very used with MIDI synchro, and
> perhaps it's a really basic error, but I cannot figure out what it deals
> with.
> 
> Thanks a lot.
> Aurélien
> 
> -- 
> Aurélien
> 
> ------------------------------------------------------------------------------
> _______________________________________________
> seq24-users mailing list
> seq...@li...
> https://lists.sourceforge.net/lists/listinfo/seq24-users
> 

-- 
Aurélien