I just purchased a Roland Integra-7 synth module, which I use with my Sonar Producer  8.5 software. As I have been running thru the presets every day over the past 6 days, I've  noticed that after playing for awhile. one of the notes sticks--by which I mean that one of the notes gets stuck in sustain, while all the other notes respond normally. As I go to the next sound, that sustaining  note shuts off, but starts as soon as I start playing the next patch. It's always the same note when it starts, but on other days it's usually another note. It's not the keyboard controller I'm using, since it also occurs when playing thru another controller. It does stop when I  power off and on. The people from Roland wondered if it might be a problem with Sonar. I must say that when I MIDI'ed directly from my keyboard into the Integra one day after I was starting to get the note sticking, the problem stopped occurring. However, I didn't play like that for another 1/2 hour or so, which would have tested it out more completely. Perhaps when I changed the MIDI connections, it was like powering off and on. In other words, I'm not sure where the problem is coming from.
Thus, I'm just here to ask if anybody has any experience with this problem, either with the Integra or any other synth, while using Sonar.
Thanks.
LNovik

This could be an issue with the module, a bad MIDI track, or the MIDI interface. One thing you can try is increasing the MIDI buffer size, labeled "Prepare using N millisecond buffers" under Options -> Global -> MIDI. The default value is 500ms; try increasing it to 700 or 800ms.

Thanks for that input.
2 things: 1)I did go to Optons->Glolal->MIDI. On this field, I saw a bunch of options under the "Record" heading, and near the bottom of the field, there was 1 option re: "Playback." It did  start with "Prepare using ___  millisecond buffers. Interestingly, the value on it was 250, not 500. I know you suggested 7-800, but since it was only on 250, I increased it to 500. I did play some dense piano passages with sustain, and did not hear the problem, though I only did it for about 5-10 min. I'll continue to see if that helps. Thanks for the input.
2)Roland support wrote me saying that perhaps my "input echo" on the track I was using was set to "On." I did find what I think was the "input echo" button, which is on the L of my main screen, where it lists all of the attibutes of the given track, such as panning and loudness. The picture of the button looks something liike this: ))))))
IN my track, it is assigned to "auto thru" and not "On." I assume this is correct.
Thanks again.
LNovik

2 things on this subject:
1) As I  said, I did inc the MIDI buffer size, as Bitflipper had suggested. It's on 500, and it had been on 250. Today, again while playing several piano patches for 15 or 20 min, the note sticking recurred. I guess I'll now go to 750, and see if that helps. ANy other suggestions would be welcomed. Again, after this occurred, it continued to happen with each voice I played, until I repowered. ANd, it again just occurred on 1 note.
 
2)On an unrelated note, I ran into a problem with using the IPad with my Roland Integra-7/Sonar Producer 8.5 setup. When I load a midi file that's I've downloaded from various places online, it will send MIDI messages that change the patches in the Roland. When I then go in and disable program, bank, and exclusive on the  ROland, that doesn't occur anymore. However, I then (understandably) can't control the Roland from my IPad anymore.
Thus, I would think that I need to be able to tell Sonar to stop sending such messages. However, when I looked into this about 6 months ago, I seem to remember that Sonar was not particularly good at doing this. Any ideas out there? I know someone had said to put in some blank measures at the very beginning, but I don't think that would help--even when I start the song from the middle, Sonar again changes the sound and patch that I had chosen.
Thanks.
LNovik

Funny this brings back the reason we always had a panic button in our live set up.
ALL NOTES OFF
it was called a midi log jam.
The note is stuck because it did not rieceive the note off data message.
Sonar has a panic button...look at the tool bar beside the audio engine icon.
What you need to determine is WHY this message is not being either sent or received.
Not sent means your controler midi cable interface or sonar is having issues.
Not receiving the player is having issues

OK, I think I'm making progress with your assistance. Thank you, Johnny at Cactus Music, for that suggestion. I have tried two things in the past week. FIrst, at the suggestion of Roland support, I simply played by new Integra-7 MIDI'ed straight from a keyboard, instead of going thru Sonar. After about an hour of playing, I did not get any sticking. That would imply the Sonar software, though why does it never stick with my Korg or Yamaha keyboards?
Later, while again playing thru Sonar, the sticking DID recur. I did do what Johnny suggested, and hit that button right next to the AUdio Engine button, labeled something like, "cancel MIDI in and out.". It did work perfectly; that is, the sticking note stopped immediately--and remained unstuck when I resumed playing.
 
However, this was when I was simply playing piano on the Integra-7, and not even multitracking. I mainly bought this instrument to be able to play multiple tracks at once, and if it continues to stick while just playing piano, I would think it would occur even more with the multitracking.
 
I guess I'll now finally get to what Bitflipper suggested, and increase the MIDI buffer size to 750. I assume I don't give anything up when increasing my MIDI buffer size from the 250 value it was on before, all the way up to 750--although I have no idea. IN case anyone knows any problems that I could incur from doing this, please let me know. ALso, if by describing my problems and progress so far, if anyone can figure out a reason why all this is occurring with my setup, I'd also very much appreciate that input.
Thanks again.
 
PS: Keyboard Mag just said that the Cakewalk site has one of the best support FOrum sites, and I agree.
LNovik

If you make the MIDI buffer too large you might start hearing noticeable lags in response to CC automation or the arpeggiator.
 
The fact that you can play the module directly from a keyboard without sticking notes suggests the problem is not within the module. I doubt it's a SONAR issue, though. More likely the method of transmission. I assume you're using USB. If so, is routing through 5-pin DIN cables an option? I'm sure the module has DIN connectors, so it's a matter of whether your audio interface does, too.
 
Here, I use DIN for all things MIDI (except, obviously, software synthesizers) and I never get stuck notes on my external synthesizers. It's happened with a few Kontakt libraries, and with SAVIHost using its virtual keyboard, but never with any of my hardware synths. 

No, I'm not using USB. I use a 4x4 Midisport interface, and I don't think that's connected to a USB port. ANy suggestions with this type of setup?
LNovik

Oops. I just crawled down there and realized that I am wrong about the last point. It IS a MidiMan MIDISport USB interface, and, as the name implies, I see it is hooked up to the back USB port of my pc. HOwever, the only other connections on the unit are the MIDI in and out receptacles. I don't think I could change the type of connector that attaches to the unit on the other end of that USB cable/jack.
LNovik

I think you might have just found the source of the problem. Start looking into threads regarding issues with midi sports, I think I've seen this come up before.