[PD] MIDI input problems in PD

[Ingo]

I was using MIDI OX as well. I wonder if Laura did.
If yes, it could be related to MIDI OX as well.

Ingo


> -----Ursprüngliche Nachricht-----
> Von: pd-list-bounces at iem.at [mailto:pd-list-bounces at iem.at] Im Auftrag von
> Miller Puckette
> Gesendet: Sonntag, 26. Februar 2012 22:11
> An: Pierre-Olivier Boulant
> Cc: PD-List
> Betreff: Re: [PD] MIDI input problems in PD
> 
> Drat, I can't reproduce this yet... I don't have any real MIDI devices,
> just USB keyboards that fake MIDI, so perhaps I need to track down an
> old-fashioned MIDI device somewhere :)
> 
> M
> 
> On Sun, Feb 26, 2012 at 08:15:32PM +0100, Pierre-Olivier Boulant wrote:
> > Hi,
> >
> > I have the same problem. It affects several computers running XP,
> > Vista or Win7 and several Midi controllers; either connected to a
> > RME multiface or through USB (Korg NanoPad / Berinhger BCR2000 or
> > BCF2000 / Akai LPD8). Mostly using CC, hardly Midi-notes. And most
> > of the time I go through Midi-Ox and a virtual midi port (midi yoke)
> > to merge all controllers before sending to Pd. Midi-Ox checks for
> > looping and should be able to prevent it and my patches try to limit
> > looping and Midi data flow too.
> >
> > It does look like there is some overflow of the midi I/O buffers.
> >
> > I tend to limit the flow of data outgoing with [speedlim] and have a
> > separate sessions of Pd for the control/GUI and audio with the
> > audio/midi properties set differently between the two sessions.
> >
> > For me it happens after big rushes of data: if I instantiate all the
> > parameters of a BCR2000 at once (over 100 parameters) at the same
> > time as updating the GUI in Pd it's not that hard to overload the
> > midi buffers and create this problem and it doesn't take two hours
> > to crash then... :)
> > And if you send a lot of stuff from the controllers too then it can
> > lead to the same issue.
> > I'm not sure it's only the flow of midi data, but it could be the
> > Midi data plus a lot of processing in Pd, especially with GUI
> > objects moving in response to the Midi input.
> >
> > Re-instantiating the Midi-settings seems to flush the buffers, but
> > sometimes it takes a reboot to make the problem go away once
> > everything is stuck.
> >
> > Cheers
> > Pierre-Olivier
> >
> >
> >
> >
> > On 26/02/2012 08:28, Ingo wrote:
> > >I had the same problem with Windows XP and a RME Hammerfall DSP card
> using
> > >only the normal [notein], [ctlin], [toutchin] and [pgmin] for a
> sampling
> > >synth. I don't think it's the midi interface. RME has some of the best
> > >drivers - very stable.
> > >
> > >Sometimes after a certain amount of time it started playing notes by
> itself
> > >and didn't seem to stop anymore. It sounded like notes or melodies that
> I
> > >had been playing before. Nothing random.
> > >
> > >Could it be possible that midi data is written into a buffer that does
> not
> > >get emptied anymore? Then something might trigger reading out that
> buffer?
> > >
> > >I couldn't recreate why it happened. Most of the time it didn't do it
> but
> > >every once in a while it did.
> > >
> > >I had no problem ever running Nuendo for days on that same machine
> > >programming midi. The same Pd patch was doing fine on a Linux computer
> after
> > >switching to Linux.
> > >
> > >Ingo
> > >
> > >
> > >
> > >>-----Ursprüngliche Nachricht-----
> > >>Von: pd-list-bounces at iem.at [mailto:pd-list-bounces at iem.at] Im Auftrag
> von
> > >>Miller Puckette
> > >>Gesendet: Sonntag, 26. Februar 2012 00:04
> > >>An: Villa Anna
> > >>Cc: pd-list
> > >>Betreff: Re: [PD] MIDI input problems in PD
> > >>
> > >>I haven't seen this problem, but I have to admit I don't think I ever
> > >>ran MIDI into a Windows machine for more than 2 hours at a time (back
> > >>when I acually used MIDI Windows itself wasn't stable enough to run
> for
> > >>that long at a time :)
> > >>
> > >>It's hard to know whether this is the MOTU driver misbehaving in
> windows 7
> > >>or something with Pd itself - my only suggestion would be to try
> either
> > >>(1) switching interfaces to something more modern than 828MKII or (2)
> > >>try using some other software to see if the problem is specific to PD.
> > >>
> > >>cheers
> > >>Miller
> > >>
> > >>On Sat, Feb 25, 2012 at 11:03:32AM +0100, Villa Anna wrote:
> > >>>Dear list,
> > >>>
> > >>>I have problems with Midi input in PD.
> > >>>I use Windows 7 and make use of a Motu 828MKII soundcard.
> > >>>I receive MIDI via a polytouchin object (make use of FSRs and a
> coridium
> > >>>armmite to translate pressure on the FSRs to Midi messages).
> > >>>All goes fine in the beginning, but sometimes after a while (f.e. 2
> > >>hours)
> > >>>my Midi input starts to be random (FSRs trigger that are not supposed
> to
> > >>be
> > >>>triggering). If I restart PD everything is back to normal. Any idea
> what
> > >>>the cause of this problem might be?
> > >>>It's an installation project so it is difficult to restart everything
> > >>from
> > >>>time to time.
> > >>>
> > >>>Thanks in advance for your help!
> > >>>
> > >>>Laura
> >
> >
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