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> Carla 2.0 RC4 is here!
On 2019-03-02 by falkTX

Hello again everyone!
This is a quick fix for the Carla Plugin Host (soon-to-be) stable series.


  • carla-vst: Add Ardour workaround for its 'Analysis' window
  • carla-vst: Fix typo leading to buffer size of 1 during plugin activation
  • Fix for some stupid plugins messing up with global signals (restore original signals after creating plugin)
  • Fix dry/wet for VST plugins (by creating extra buffer for inline processing)
  • Fix crash in RtAudio when ALSA soundcard is listed but not available
  • Fix crash on JACK buffer size changes in patchbay mode
  • Fix crash when directly loading vst shell plugins (carla-single or drag&drop dll file)
  • Fix loading multiple exported LV2 plugins (always copy full carla-plugin binary when exporting)
  • Fix missing transport information when Carla is not jack transport master
  • Fix opening a few VST2 UIs (we give up trying to follow VST spec, always assume UI opens nicely)
  • Fix plugin bridges not working under Fedora (RT threads were able to be setup, but not started)
  • Automatically terminate wine bridges if main carla dies
  • Calculate VST2 ppqPos in a more reliable way
  • Do not set up RtAudio in "hog device" mode
  • Do not build external plugins in debug or strict build
  • Handle more sources of VST2 automation via audioMasterAutomate
  • Handle worst-case scenario of carla-plugin buffer size being too low

I am not confident enough to call it the stable version just yet, as some of these release changes actually introduced new code.
But the target date for the stable release is now set - middle of April.
There are no more release-blocker bugs for Carla v2,0 anymore, so it is just a matter of time now.


To download Carla binaries or source code, jump on over to the KXStudio downloads section.
If you're using the KXStudio repositories, you can simply install "carla-git" (plus "carla-lv2" and "carla-vst" if you're so inclined).
Bug reports and feature requests are welcome! Jump on over to the Carla's Github project page for those.