Freezing on each midi region edit

#1

I’m running Ardour 9.8.0 “The Equatorial Stars” (rev 9.8) Intel 64-bit. Each time I resize, move a midi region or edit a note inside it Ardour seems to freeze for about half a minute. This makes working with midi extremely frustrating. Seems like this start occurring after copy pasting a region multiple times throughout the track.

I’ve also noticed that if a project has many midi regions it takes really long time to load it up. Something is clearly not right.

Never had anything like that on older versions, but since I wasn’t really working with midi for a while I’m not sure which version introduces this problem.

What could be freezing it? Is there any way to fix this?

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#2

Can you make an example session available?

#3

Here you go: Session example

I’ve uploaded to LimeWire, let me know if you want me to share the session file in a different manner.

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#4

So far the best solution I’ve found is combining regions to have one per track rather than separate ones per each loop.

#5

Could you archive the session before uploading it ? The .ardour file alone is not enough to reproduce the issue. There a bug in 9.8 (already fixed in nightly) that causes slowdowns in presence of overlapping opaque midi regions.

#6

Yes, but not the same exact session since I’ve combined regions on it. I uploaded another session example on which I had plenty of separate MIDI regions so It is loading a long time and editing would make Ardour freeze as well.

This might be a different bug, 'cause I don’t really think there are any overlapping regions on this one.

#7

This is the message I see when it’s loading:

Screenshot_20260924_142841
Screenshot_20260924_1428411188×812 133 KB

#8

Yes that’s the bug I’m talking about, if possible please try with a nightly build to confirm.

#9

Damn, I’m not really a subscriber. Would ardour-git package on AUR count as a nightly build?

https://aur.archlinux.org/packages/ardour-git

I’ll have to build it myself. Here’s the source variable in PKGBUILD:

source=("$_pkgname::git+https://github.com/Ardour/ardour.git"
        "$_pkgname-midi-${pkgver%%.*}.zip::http://stuff.ardour.org/loops/ArdourBundledMedia.zip"
        'ardour-7.x-vendor_qm-dsp.patch')
#10

I could as well edit the PKGBUILD to use the nightly branch if it does not already. I’d appreciate a link.

#11

A demo build (https://nightly.ardour.org/) is enough to test :).

#12

Would you still have a link to the nightly repo and/or branch name?

#13

If you’re building from source then the master branch = nightly.

#14

Cool! It turns out the session does load normally on a nightly build as well as editing it doesn’t make Ardour freeze for long periods.

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#15

Thanks for confirming !