MIDI Notes Sticking with 4.5

[waterstrum]

I just upgraded to DP 4.5 from 4.12.
I din't change anything else.
Now my Korg Triton has stuck notes when I play back sequences.
I have to hit the panic button to stop it.
My other synths seem fine.
I'm using a USB MTP AV.
Does anyone have a solution?

[digitalt]

I'm having serious problems as well with MIDI notes sticking with 4.5. One thing I did was use clockworks to filter out everything but "note" and "patch changes". That helped but I still can't go 4 minutes without notes sticking on any of my synths. I also tried deleting my MIDI framework file ( "System/Library/Extensions/MOTU MIDI Driver.kext) and reinstall the MIDI driver for the MTP. That helped a little but I still get sticky notes. Try these things and post a reply. I'm really curios if other people are getting the issues.

[danworks]

I had the same PITA, and now it's gone!

After having tried everything, included changing USB cable and port, another MTP-AV, reset the MTP several times, changed the MTP battery etc, I've set on Hardware Setup the priority to MEDIUM (it was on HIGH, as suggested on DP Manual), with buffer size 512K.

Apparently there's an issue about this option and I imagine soon it will be reported: it isn't exactly true that HIGH is the right setting for MOTU hardware. On some particular scenario (my setting included), MEDIUM priority works much better, getting rid of stuck notes, and if any, processor spikes even when the CPU window shows a 40-50% only.

Be sure to have the latest MOTU drivers!

I'll suggest to try it.

<small>[ November 10, 2004, 04:34 AM: Message edited by: danworks ]</small>

[ellios]

Had the same problems but every minute!

Reverted to 4.12 and now almost everything is fine. (I still get some notes sticking from time to time and it did not happened before in 4.12.)

Also, I found that the memory handling of my virtual synths was crappy compared to 4.12. I have an army at my fingertips (atmosphere, stylus, sampletank, stormdrum, morphology and about 200 MIDI tracks of different orchestral articulations opened.) and 4.12 handles it well.

But would be interested to make 4.5 work sometime soon...

[ellios]

And by the way, i tried the medium setting as well. Worked only for a while...

[digitalt]

It's seem that sticky notes is a huge problem. I have a similar setup as you Ellios. I'm running about 20 to 30 MIDI tracks and the performance it just flat out crappy. Are you running off an external word clock? I don't know if that makes any difference but I'm just trying to see what the common denominator is between all of us. -BTW its cool to see that your using one of the products that I worked heavily on - "Stormdrum". It's a really cool sound library huh? Have you ever use the patch in Large Percussion called "Thunderous Ensemble"? It's pretty bad ass.

<small>[ November 10, 2004, 11:57 AM: Message edited by: Tony soundwarrioir ]</small>

[studioprez]

I've had this problem for years even going back to performer 2.0(the original sequencer). It doesn't take much, an OS hickup,power spike, etc to futzz a synths brain. My own hunch is its probably an OS 10 issue and the way it handles MIDI since it never happened under OS 9 on my Fantom but its pretty common now and I was running DP4.12 under both.

[ellios]

Hey Tony

I'm in the process of buying a nanosync rosendahl generator to better audio clock all my machines and I don't really forsee a change with the MIDI bug we're experiencing. But on second thought, why not try it. Audio is sometimes heavy on the CPU but MIDI, come on! 8 little bits to handle is not a lot to ask, don't you think? Anyway, i'll let you guys know when I try it.

And Stormdrum is a real kiss ass, you bet'ya! Haven't used the thunder ensemble in a score yet but a few others and it simpified my film composers' life a great deal! The sounds are terrific, the programmation flawless ( so far) and the engine (kompakt) to die for. Great job Tony. Thanks.

[OortNYC]

I have the same issue and MTC dropouts as well. Have had it since DP3. I think there may be an issue with Motu's MIDI drivers or their hardware. I have a friend who purchased a non-motu MIDI interface and he said the problems stopped. Is everyone here using a Motu interface?

[Shooshie]

Could everyone in this thread (who hasn't already done so) be a little more specific about their equipment, and about the circumstances in which the stuck notes occur?

I have a wide variety of extensive uses of MIDI, and I have yet to experience any stuck notes. There must be something different about our systems which we can identify if we have enough information.

dual 1GHz G4 QuickSilver
1GB RAM
IDE Internal drives: 2 (total of 4 partitions)
Firewire external drives: 3 (total of 5 partitions)
MTP-AV (USB) networked with MTP-AV (serial)
MOTU 896
MOTU 1296 (PCI-424)
MOTU 2408 mk II
DP 4.5
rack of synthesizer/samplers/effects

••• I generally use no Virtual Instruments
••• I generally restart the computer before booting DP
••• I have very few of the problems that people report, though I've had the COQ once, and a couple of other quits which I've documented at OSX Audio and/or here.

Shooshie

[studioprez]

Shooshie other than being on a G5 my setups similar just smaller. I have tried other clocking scenarios out of the MTP-AV(USB), no virtuals,restart hygene(hell I repair permissions twice a month),everythings powered out of a Furman PLUSDM, the older synths are flaky anyway and the drivers probabaly are incompatible, but I still get it on my Fantom which is pratically new. I don't run partitions. I do use my aux MIDI ports on the front but the rest of my devices are wired in the rack including some MIDI outboard gear. A manual notes off command doesn't work on any of the synths when they hang. I have to do a mode or patch change to clear it. A restart on the AV and the Computer seems to help for a while. Are you running a dedicated music platform or do you have other types of software installed?

[iMAS]

I get these MIDI stuck notes too where the sequence will briefly pause and then resume playing. It's really annoying. Happens like every 10 minutes. I have the Motu MTP A/V. I'm using mostly virtual synths, but do still find use for my korg triton once in a while. I've been having these so called MIDI stuck notes-drop outs for a while now...since back in dp 3. I'm in 4.12 at the moment and will install 4.5 later tonight. I don't think the audio interface has anything to do with it...it happened when I was using the 896 and still happening while using the hd192 right now. My comp is a G4 dual gig.

It's bad enough that it pauses, but when I'm recording MIDI to audio...it's unacceptable.

[TheCoalman]

I'm also having major problems with sticking MIDI notes in 4.12 on a brand new G5/10.3.5, my interface is a MTP AV and I have to either turn it off and on or turn the guilty synth off and back on. Its a major pain.

this never happened on my G4, even in OSX so I'm thinking its something about the combination of the G5 and the MTP AV. Who knows, but it really is a thorn in my side.

[digitalt]

Here's my setup:

MTP AV USB
MIDI Express XT USB
Motu 2408 (first version)
G4 Dual 800 Mhz Quick Silver (Clocking via Panasonic DA-7 Digi Mixer)

The only reason I mentioned the audio clock was because MIDI gets its timing from the audio clock. Have you ever played a sequence while starting up your clock? The performance of Both MIDI and Audio starts off slow and then speed up as the word clock stabilizes. just a thought. Otherwise I'm stuck on how to fix the problem... much like my MIDI notes

[Joe Bubar]

Good evening, fellow sufferers. I'm not sure how I feel about being in such good company - I think I'd rather everything just work like it's supposed to. I'm starting to see a trend with the MTP AV users - I'm one and I've had a bunch of MIDI hang-ups - on a G5. Never had this problem with the AV on my G4 running 2.7. Now I'm in 4.12 and it's just a bunch of trials and errors! I will say this for MOTU - the tech support is so much improved over my initial experience with them years ago. I'd completely given up until switching to DP4 and having nightmarish problems - so I called on a lark and got a human being after one ring! I've probably called 5 or 6 times and can always get somebody on the line in 60 seconds or less! And they fixed my 2408mkII for me (channels 1 & 2 went kaput) for $50 - now that's service! But they can't solve my problem - they blame Apple or Universal Sound Bank, Apple says its a MOTU problem, USB is unavailable for comment...ugh.
I'm a brand new member of the Nation, so thanks for letting me vent.
All that to say:

G5 1.6
1.5 RAM
10.3
MTP AV and MicroExpress USB
Reason, 2 USB Plugsound modules, Novation V-station, 2 keyboards and 5 modules
DP 4.12

MIDI notes sticking only occasionally since I bypassed my USB hub and ran both interfaces directly to my USB ports. But still - I'm just doing like 6 or 8 MIDI tracks and it sticks - the worst culprit was the old D-550, so I unplugged it altogether and am living without it (no great sacrifice, I know - but it's the principle!). What gives?
Anyway, my real problem is with the "Audio Playback has overloaded your computer's processor" message - playing back two tracks! On a G5?! Thanks for listening and sharing - I'm off to another thread, but I'll be checking back.