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Qtractor 0.9.16 - QStuff* Summer'20 Release batch #3


One third and last time around...

Qtractor 0.9.16 (summer'20) is out!


  • Experimental / High resolution plugin automation (14-bit) options is now also removed from View > Options... > Plugins dialog.
  • Audio Clip / Export... now takes into account custom fixed gain property (shamefully missing for the whole last decade to date).
  • Finally indulged on dummy LV2 plug-in CVPort support, just to avoid certain immediate and sudden crashes when inserting those kind of 'non-functional' plugins accidentally.
  • Bring the Track Export dialog down to Clip Merge/Export as well, for optional file type and format selection.
  • When enabled, do auto-save upon adding or inserting a new plugin.
  • Make sure LV2 plug-in UI GTK2 and X11 native support is selected first by default on top to libsuil.
  • Both out-of-process plugin inventory scan and LV2 Dynamic manifest options have been removed from View > Options... > Plugins dialog.
  • Fixed deprecated stuff on an early preparation for Qt6.


Qtractor is an audio/MIDI multi-track sequencer application written in C++ with the Qt framework. Target platform is Linux, where the Jack Audio Connection Kit (JACK) for audio and the Advanced Linux Sound Architecture (ALSA) for MIDI are the main infrastructures to evolve as a fairly-featured Linux desktop audio workstation GUI, specially dedicated to the personal home-studio.


Project page:


Git repos:

Wiki (help wanted!):


Qtractor is free, open-source Linux Audio software, distributed under the terms of the GNU General Public License (GPL) version 2 or later.

Keep the fun && Stay safe!

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Hi, I am enthousiatic about this product an would like to install the latest version (Ubuntu Studio comes pre installed with the last release form 2019).
The latest version however gives compile errors:

qtractorOptionsForm.cpp: In constructor ‘qtractorOptionsForm::qtractorOptionsForm(QWidget*)’:
qtractorOptionsForm.cpp:201:7: error: ‘class Ui::qtractorOptionsForm’ has no member named ‘Lv2DynManifestCheckBox’
201 | m_ui.Lv2DynManifestCheckBox->hide();
| ^~~~~~~~~~~~~~~~~~~~~~
make[2]: *** [Makefile:4249: .obj/qtractorOptionsForm.o] Fout 1
make[2]: Map '/home/vanrooij-1/Downloads/qtractor-0.9.16/src' wordt verlaten
make[1]: *** [qtractor.mak:48: sub-src-make_first] Fout 2
make[1]: Map '/home/vanrooij-1/Downloads/qtractor-0.9.16' wordt verlaten
make: *** [Makefile:329: src/qtractor] Fout 2
Can you help/advise?

Regards, Frank

rncbc's picture


please make sure you build/compile with ALL the recommended requirements, most especially all the LV2 development support libraries and stuff:

sudo apt-get install lv2-dev liblilv-dev libsratom-dev libsord-dev libserd-dev

and then try again from ./configure ... && make, etc.

instead of building or compiling the source altogether, you can add one of my Launchpad PPA repositories, from where you get the latest and fully-featured upstream snapshots of all of the qstuff, not only qtractor; in your case, if you're on UbuntuStudio 20.04, I recommend you to xUbuntu_20.04 (focal):

sudo add-apt-repository ppa:rncbc/focal
sudo apt-get update

good luck! :)


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