Re: mtpav - new observations

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Hi 

I just tried opening a file with multiple ports assigned to the mtpav.
It locked the system. 

This repeated in testing again. However if opening assigning a port to
the mtpav prior to opening a file it worked perfectly. 

cheers

Allan 



On Fri, 2006-12-08 at 02:07 +1100, Allan Klinbail wrote:
> Hi Clemens 
> 
> I can't find any other sequencers with sync implemented properly... 
> 
> Rosegarden doesn't accept any MIDI sync in on my system, and does not
> seem to set a correct out as the external sequencer shows it's play
> light go on but does not catch up sync until stop is pressed. 
> 
> MusE has rock solid sync out and I am only seeing the problems on sync
> in. I do not know of another software I can use to compare to try and
> identify if it is the driver or the software. 
> 
> Let me know if you know of one. Takashi, once sent me a cli based
> program to test this, but I know longer have it. (It was on a 2.2 kernel
> so probably wouldn't work anyway)  
> 
> cheers
> 
>  
> Allan 
> 
> 
> On Thu, 2006-12-07 at 19:40 +1100, Allan Klinbail wrote:
> > Hi Clemens, 
> > 
> > I haven't tried the other 2 yet (will do today or tomorrow), however I
> > have done some more extensive testing today. This only happens when the
> > mtp-av is actually plugged in and turned on at the point where the
> > driver is first used (i.e. assigning a MIDI Port in MusE to a channel on
> > the mtpav or trying to send play a midi file through one of the mtpav
> > ports using a command line sequencer. If the device is actually turned
> > off the driver computer behaves as if everything is okay. 
> > 
> > I also found that the driver doesn't hang the machine if a MIDI port is
> > assigned in MusE while the device is powered down. The system doesn't go
> > into hard lock if the system is  powered up after this. The driver works
> > reasonably reliably in this state. 
> > 
> > I was able to add extra ports in MusE after it was turned on (only after
> > the first port had already been assigned). I was also able to play to
> > and record from the individual ports. 
> > 
> > I say reasonably reliably as the timing doesn't seem to be working 100%.
> > The "tach" light flashes on the mtpav and I don't seem to be able to get
> > reliable sync. However this only happens when I don't block Midi clock
> > from one of my other external sequencers and don't disconnect the MIDI
> > cables from my usb MIDI controller from the mtpav. 
> > 
> > Admittedly this could be to do with the sync implementation in MusE, so
> > I will try with Rosegarden as well. 
> > 
> > I have to go to dinner now, but let me know if there is anyway I can get
> > debug information for you that will help solve this. 
> > 
> > ALthough it's still not working rock solidly, I am much happier to see
> > something start to work. Unfortunately though this appears to be more
> > driver related than hardware, so a quick fix like a new motherboard
> > won't solve it.  
> > 
> > cheers
> > 
> > Allan  
> > 
> >   
> > 
> > 
> > On Thu, 2006-12-07 at 08:31 +0100, Clemens Ladisch wrote: 
> > > Allan Klinbail wrote:
> > > > I have only been getting a total lockup when trying to initialise the
> > > > mtpav driver for my MOTU midi timepiece (i.e. actually using it in a
> > > > sequencer), for a very long time. 
> > > 
> > > Does this happen only with the snd-mtpav driver or also with other
> > > drivers like snd-mpu401 or snd-seq-dummy?
> > > 
> > > 
> > > Regards,
> > > Clemens
> > 
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