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IDProjectCategoryView StatusLast Update
0006785ardourbugspublic2016-10-09 20:27
Reporterkhomkovm Assigned To 
PriorityhighSeverityfeatureReproducibilityalways
Status closedResolutionfixed 
Platformx86_64OSLinux MintOS Version17
Product Version4.6 
Summary0006785: Ardour drops midi notes when looping with 4.6 and 4.7 but not 4.4
DescriptionHi.
Ardour 4.7 has the same loop bug that Ardour 4.6.
Stuttering during playback.
TagsNo tags attached.

Activities

khomkovm

2016-02-21 08:41

reporter  

video.ogg (898,670 bytes)   

timbyr

2016-02-22 10:33

developer   ~0017993

To me this looks like a duplicate of bug 5438 in that the midi notes near the start of a region are not being played/sent after looping.

Would you agree?

Does it make any difference if space/time is added between the loop start and the start of the region?

khomkovm

2016-02-22 13:05

reporter   ~0017994

It is possible, but why in version 4.4, this bug was not??
I had to reinstall 4.4. second time. First time it was after 4.6. had been released.

timbyr

2016-02-23 11:02

developer   ~0017999

It may not end up being relevant but what audio backend are you using and is it the same for both 4.4 and 4.6?

khomkovm

2016-02-23 12:29

reporter   ~0018000

It is the same for both of them (4.4., 4.6., 4.7). I am using Linux
Sampler, RockStock drum library (GIG format).

timbyr

2016-02-24 00:01

developer   ~0018002

I meant whether you were using the JACK or ALSA backend but I don't think it is relevant as I can confirm that there is a regression from 4.4 as I can't reproduce the dropped notes with that version(with either backend)

As for why(what change introduced this bug), that should be fairly easily to determine with git bisect or perhaps code review, but it would take some time.

khomkovm

2016-02-24 06:18

reporter   ~0018005

ALSA

x42

2016-02-24 10:48

administrator   ~0018008

Is the "Seamless Loop" preference enabled (Preferences > Transport)?

If so, then dropped midi notes are not unexpected: We don't yet support seamless Midi looping (split cycle, midi buffer offset).

In early 4.X releases (probably up to 4.4) seamless looping was broken.

Try to disable seamless looping and check if the issue persists.

khomkovm

2016-02-25 13:44

reporter   ~0018013

The "Seamless loop" is disabled. The issue persists.

Issue History

Date Modified Username Field Change
2016-02-21 08:41 khomkovm New Issue
2016-02-21 08:41 khomkovm File Added: video.ogg
2016-02-22 10:33 timbyr Note Added: 0017993
2016-02-22 10:33 timbyr Status new => feedback
2016-02-22 13:05 khomkovm Note Added: 0017994
2016-02-22 13:05 khomkovm Status feedback => new
2016-02-23 11:02 timbyr Note Added: 0017999
2016-02-23 11:02 timbyr Status new => feedback
2016-02-23 12:29 khomkovm Note Added: 0018000
2016-02-23 12:29 khomkovm Status feedback => new
2016-02-24 00:01 timbyr Note Added: 0018002
2016-02-24 00:02 timbyr Summary Ardour 4.7 has the same loop bug that Ardour 4.6. => Ardour drops midi notes when looping with 4.6 and 4.7 but not 4.4
2016-02-24 00:02 timbyr Status new => confirmed
2016-02-24 06:18 khomkovm Note Added: 0018005
2016-02-24 10:48 x42 Note Added: 0018008
2016-02-25 13:44 khomkovm Note Added: 0018013
2016-10-09 20:27 khomkovm Status confirmed => closed
2016-10-09 20:27 khomkovm Resolution open => fixed