MIDI notes stopped generating events on some tracks only

vitaminx · 08-09-2018, 07:17 AM

Hi, I have a super weird problem, but I don't know if it's a bug or some hidden switch or option.

I recorded a couple of MIDI tracks with my Alesis Forge Drumkit. I could play them back to the Alesis Forge and all was OK.
But I don't know what I did, but one track after another stopped generating MIDI events when playing back.

The funny thing is that I can click on the piano roll in the MIDI editor and it emits a MIDI event like you would expect.
But when entering a note in the editor, the note preview emits a MIDI event, but when playing back it doesn't.

When I create a new track and I copy + paste the MIDI item to it, it does not work, the MIDI notes just won't generate events.

When I create a new track and a new MIDI item, I can enter notes and they play back normally, so the issue is somewhere in the affected MIDI item itself, not in the track settings.

It is super weird, I don't know what I have done to stop MIDI to be generated for those items, and I've checked everything I know of:

- tracks are not muted, nothing is solo
- the routing is fine, I can click on piano roll keys and it sounds OK, note preview sounds OK too
- note velocities are good
- the item itself is not muted
- the item volume is up and ok
- no automation is active
- the notes are set to the correct MIDI channel

Could you think of anything else I could check?

Thanks

xdudex · 08-10-2018, 09:27 AM

Just a couple weeks ago (toward the end of my Windows tenure) I was using MIDI drums on a track.

I was experiencing this exact same issue where MIDI events wouldn't trigger on playback. I'd have to launch one of the rpp-bak files to get the MIDI drums to perform playback correctly.

Sorry I do not have an answer for you at all, but I'm hoping to help bump this post and get someone much more knowledgeable than me to assist.

lilith93 · 08-10-2018, 11:21 AM

Can this be a problem related to the time representation in Reaper? I don't know if Reaper has such problems, but Ardour does in Version 5. This will be solved in Ardour 6. I observed this in Reaper only once that a midi note is not playing, so likely there a similar issues (??).

What happens when you shift your midi item a little bit (1/128 note or even less)? Do they play then?

https://www.admiralbumblebee.com/mus...ped-midi-notes

vitaminx · 08-10-2018, 02:20 PM

Quote:

Originally Posted by lilith93

What happens when you shift your midi item a little bit (1/128 note or even less)?

Nope, that doesn't make any difference.

vitalker · 08-11-2018, 01:07 AM

Could you please give us your midi file?
Perhaps it is related with midi channel.
Didn't you change it accidentally?

vitaminx · 08-11-2018, 05:21 AM

Quote:

Originally Posted by vitalker

Could you please give us your midi file?

Here is the midi file: http://www.callistix.net/music/miditest.RPP

The 3 first tracks stopped generating MIDI events, the VU meter in the mixer panel shows no activity.
I added a fourth track which is working, as the VU meter in the mixer flashed red when playing.

Quote:

Originally Posted by vitalker

Perhaps it is related with midi channel.

Well, the meters in the mixer should at least indicate that a MIDI event is generated, independent of the selected channel.

eric71 · 08-12-2018, 02:16 AM

I've been playing with your project. I'm not a big midi expert, and it has had me stumped. But if I right click on one of the midi items that doesn't play and select item processing-convert active take MIDI to .mid file reference, and then import this .mid file back into a new track, and add the js plugin "MIDI Note Hold" in before my drum sampler, it works.So maybe it is something about note length, or on/off. But for some reason adding the "note hold" effect to your original tracks doesn't help. Weird.

vitalker · 08-12-2018, 02:27 PM

Looks like there are some CCs, which block notes.
The simplest way to make them play is to copy them from old items to new items and it will work. Maybe CC pedal made this, but I couldn't change almost anything.

vitaminx · 08-13-2018, 03:59 AM

Quote:

Originally Posted by vitalker

Looks like there are some CCs, which block notes.

Hi, thanks for checking the file, but this is not it. I removed all CC events from the even list and they are still not playing.

I also never heard of CC events "blocking notes", what exactly do you mean?

I also noticed that the notes had zero length, I increased that to match the working track's MIDI note lengths, but still nothing is played.

And yes, you are right, I could just copy the notes to a new MIDI item and things would be allright.

But if this is a bug it would probably need to be looked into.

vitalker · 08-13-2018, 05:30 AM

Quote:

Originally Posted by vitaminx

Hi, thanks for checking the file, but this is not it. I removed all CC events from the even list and they are still not playing.

I also never heard of CC events "blocking notes", what exactly do you mean?

I also noticed that the notes had zero length, I increased that to match the working track's MIDI note lengths, but still nothing is played.

And yes, you are right, I could just copy the notes to a new MIDI item and things would be allright.

But if this is a bug it would probably need to be looked into.

Yes, I've also removed all the CCs and nothing changed. ReaControlMidi's log didn't show any events. For the first time I've managed the first track to play, but didn't save it. By blocking I mean not playing notes. I've tried everything you write about. You know Reaper project files are just plain text?
Yeah, maybe try to report the bug.

vitaminx · 08-13-2018, 05:48 AM

I found the issue by looking at the RPP file!

The EVTFILTER line looked different between the working and not working MIDI items.

So, here's the thing: I had "Solo" enabled in the filter (MIDI Editor -> right click on Filter button). I had no idea it was switched on as the filter itself is switched off.

I'm not sure if it is intended behavour to have "Solo" affecting the item even if "Filter" is off, can a Reaper dev please comment?

Thanks to everyone else for helping to hunt this down

vitalker · 08-13-2018, 06:39 AM

Oh, that's how I've managed to run notes on first track. I even didn't think this can affects items in this way.
It would be better to make a bug report or send an email with project to support at cockos.com

vitaminx · 08-15-2018, 05:41 AM

Quote:

Originally Posted by vitalker

It would be better to make a bug report

I thought posting in this forum is how to report bugs in Reaper?

vitalker · 08-15-2018, 05:55 AM

Quote:

Originally Posted by vitaminx

I thought posting in this forum is how to report bugs in Reaper?

Firstly, this forum is Linux specific. Secondly, there is a thread for Linux specific bugs.
This bug is not Linux specific.
Of course, you can post it wherever you want, but it won't be fixed.

Go to https://forum.cockos.com/ and try to find aproppriate forum for yourself.

08-09-2018, 07:17 AM	#1
vitaminx Human being with feelings Join Date: Jul 2018 Posts: 52	MIDI notes stopped generating events on some tracks only Hi, I have a super weird problem, but I don't know if it's a bug or some hidden switch or option. I recorded a couple of MIDI tracks with my Alesis Forge Drumkit. I could play them back to the Alesis Forge and all was OK. But I don't know what I did, but one track after another stopped generating MIDI events when playing back. The funny thing is that I can click on the piano roll in the MIDI editor and it emits a MIDI event like you would expect. But when entering a note in the editor, the note preview emits a MIDI event, but when playing back it doesn't. When I create a new track and I copy + paste the MIDI item to it, it does not work, the MIDI notes just won't generate events. When I create a new track and a new MIDI item, I can enter notes and they play back normally, so the issue is somewhere in the affected MIDI item itself, not in the track settings. It is super weird, I don't know what I have done to stop MIDI to be generated for those items, and I've checked everything I know of: - tracks are not muted, nothing is solo - the routing is fine, I can click on piano roll keys and it sounds OK, note preview sounds OK too - note velocities are good - the item itself is not muted - the item volume is up and ok - no automation is active - the notes are set to the correct MIDI channel Could you think of anything else I could check? Thanks

08-11-2018, 01:07 AM	#5
vitalker Human being with feelings Join Date: Dec 2012 Posts: 13,333	Could you please give us your midi file? Perhaps it is related with midi channel. Didn't you change it accidentally? __________________ Donate►Chroma - coloring tool►SoundCloud►All the REAPER names

08-12-2018, 02:16 AM	#7
eric71 Human being with feelings Join Date: Feb 2008 Location: Finland Posts: 160	I've been playing with your project. I'm not a big midi expert, and it has had me stumped. But if I right click on one of the midi items that doesn't play and select item processing-convert active take MIDI to .mid file reference, and then import this .mid file back into a new track, and add the js plugin "MIDI Note Hold" in before my drum sampler, it works.So maybe it is something about note length, or on/off. But for some reason adding the "note hold" effect to your original tracks doesn't help. Weird. Last edited by eric71; 08-12-2018 at 02:21 AM.

08-12-2018, 02:27 PM	#8
vitalker Human being with feelings Join Date: Dec 2012 Posts: 13,333	Looks like there are some CCs, which block notes. The simplest way to make them play is to copy them from old items to new items and it will work. Maybe CC pedal made this, but I couldn't change almost anything. __________________ Donate►Chroma - coloring tool►SoundCloud►All the REAPER names

08-13-2018, 06:39 AM	#12
vitalker Human being with feelings Join Date: Dec 2012 Posts: 13,333	Oh, that's how I've managed to run notes on first track. I even didn't think this can affects items in this way. It would be better to make a bug report or send an email with project to support at cockos.com __________________ Donate►Chroma - coloring tool►SoundCloud►All the REAPER names

08-10-2018, 09:27 AM	#2
xdudex Human being with feelings Join Date: Jun 2010 Posts: 28	Just a couple weeks ago (toward the end of my Windows tenure) I was using MIDI drums on a track. I was experiencing this exact same issue where MIDI events wouldn't trigger on playback. I'd have to launch one of the rpp-bak files to get the MIDI drums to perform playback correctly. Sorry I do not have an answer for you at all, but I'm hoping to help bump this post and get someone much more knowledgeable than me to assist.

08-10-2018, 11:21 AM	#3
lilith93 Human being with feelings Join Date: Apr 2018 Location: Karlsruhe Posts: 488	Can this be a problem related to the time representation in Reaper? I don't know if Reaper has such problems, but Ardour does in Version 5. This will be solved in Ardour 6. I observed this in Reaper only once that a midi note is not playing, so likely there a similar issues (??). What happens when you shift your midi item a little bit (1/128 note or even less)? Do they play then? https://www.admiralbumblebee.com/mus...ped-midi-notes

08-13-2018, 05:48 AM	#11
vitaminx Human being with feelings Join Date: Jul 2018 Posts: 52	I found the issue by looking at the RPP file! The EVTFILTER line looked different between the working and not working MIDI items. So, here's the thing: I had "Solo" enabled in the filter (MIDI Editor -> right click on Filter button). I had no idea it was switched on as the filter itself is switched off. I'm not sure if it is intended behavour to have "Solo" affecting the item even if "Filter" is off, can a Reaper dev please comment? Thanks to everyone else for helping to hunt this down

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