Knowledge Base


This is only verified on Ubuntu 18.04 and requires 64bit version.

Minimum Requirements: resolution of 1920x1080 for your primary screen, and graphics card with drivers able to run version 4 of OpenGL shaders. Suggest installing the latest graphic drivers and recommend the system uses an SSD Drive.

You will need FFmpeg installed. sudo apt update;  sudo apt-get install ffmpeg;

If you have trouble importing a file (e.g. mp4), you could review:
which amounts to trying this: sudo apt-get install ubuntu-restricted-extras

Some OS distributions don't have the certain libraries installed by default, these should be detected missing and listed on the splash screen for you to install via your package manager. The deployment is not fool proof yet, therefore for reference, as well as ffmpeg,  IQSynth relies on the following libraries: sqlite3, libfreetype, libpng, libjpeg.

Known issues are listed below

If you can not find an answer, wish to report an issue or ask a question, please email contact@iqsynth for support.

Or review the bug report page that Marc from kindly set up for this here on github

Latest release notes and download here.

Known Issues are listed below (simple list at this time).

High Priority

1. Problems detecting / selecting OpenGL version on some drivers (difficult to chase due to limited resources)

Mid Priority

1. Text entry sometimes does not accept key presses unless cursor is left over control

Low Priority

1. Everything else!

General Notes:

As of 29th Aug 2019, v 0.15.0 updated plugin system and released all available plugins

As of 30th Jan 2019, v 0.10.5 updated plugin collection, should run better on NIVIDA setups .

As of18th Dec 2018, v 0.9.17 includes a security update for the SQLite component.

As of 24 Sept 2018, v 0.9.4 no longer requires libGLEW, this was causing the application to stall at startup.

To Do List (no particular order, you could contact and vote for priority)

  1. General tidy-up and optimizations (on going)
  2. Create and add menus system, and drop down controls
  3. Plugin installs via front end
  4. Plugin API Documentation
  5. Investigate AppImage deployments


Q & A

Q: The application stops with the splash screen saying my version of the OpenGL Shading Language is not high enough, why?

A: IQSynth relies on the response from the drivers when querying the available shading language version. Late in the day I've discovered that it's possible to have multiple OpenGL 'profiles'. Especially for integrated chip sets. I'm not currently detecting and selecting a profile but relying on the default. This is a reasonably high priority bug but is difficult to work on due to lack of testing setups available.

IQSynth Revision Notes

A list of all the notes from all versions is provided below.


Can now create/store startup setup, contents of the 3 racks for now
Added a Master Level control
Added option to control Aux FX destination (OUT, or a BUS)
Reinvented HotCues (no just has 2 hot cue slots, outside of the AuxRack)
Fixed retriggering/toggle behaviour of FX slots
On initial Cued Recording in Tape Loops, loop auto switchs to playback so you dont over run
Drag drop Aux Tab to eject/clear Aux Rack
Increased TapeLoop count to 5, and refactored controls
Reworked APC mapping to match new setup


Oops hotfix, fixed introduced bug in last release causing crash when recording AuxCue trigger


Increased number of Tape Loops back to 4 (might want 1 more yet)
AuxRack KU & TG should show as exclusive
Added mini tape state indicators to Aux Tab
Now displays AuxRAck on trigger Tape recording
Recorded FX On/Off follows plugin during reordering in FXStack
No longer crashes when ejecting plugin with tape recording


Added solo mode, toggleable with quad mode, on AuxRack
Aux trigger events now recordable on Tapes
Fix AUX patches losing macro setups (from last release)
Added list index and progress % to stage 1 of file import
Fix library pager, no longer has extra page
Improved sensitivity on TX dial
Stopped recording to Tape empty items
Corrected some plugin indicators on a patch load
Drag drop from large preview now ejects the correct slot
Replace Macro controls without having to eject/trash them
Switching Bus layer mode no longer leaves trigger states displayed wrongly
And a few other bits and pieces


Added mp4, webm, jpg Export options for video clips
Reworked item dialog and fixed some bugs with it