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additional info from user @rcgroups: https://www.rcgroups.com/forums/showpost.php?p=48581093&postcount=7528 > It is definitely tied to the model of the TX used for the profile. A Xlite has a different set of "wrong" positions...

how to gain permission to update the build instructions?

same here, Problem started after simultaneous upgrade from older macOS to 11.6 and companion from 2.3.12 to 2.3.14 - on macOS 11.6 in simulator (started from companion 2.3.14) no sound...

on macOS 11.6 last version with working sound in simulator for me is 2.3.11. the two debug outputs (cannot attach files here) `2.3.11 StartAudioThread(11) simuFatfsSetPaths(): simuSdDirectory: "/path/to/SD-copy" simuFatfsSetPaths(): simuSettingsDirectory: ""...

success on macos 11.6 with toolchain installed: - git clone --recursive https://github.com/opentx/opentx - git clean -f - cmake -DSIMU_AUDIO=ON -DPCB=X9D -DTRACE_AUDIO=ON -DCMAKE_PREFIX_PATH=/usr/local/opt/qt5 -DPYTHON_EXECUTABLE=/usr/local/opt/python/libexec/bin/python - make - make package does produce...

> Sounds very good, can this be considered in the next version? from more experiments I get the impression somehow 'SIMU_AUDIO=ON' gets lost somewhere in the chain of building. Or...

> https://github.com/opentx/opentx/blob/2.3/radio/src/CMakeLists.txt#L37 thanks for the pointer. It does point to a file in the 'radio' folder, not 'companion'. This does not provide much help for me to track the problem...

(incomplete) list of differences between the official mac build run on github actions (which results in described error) and successful local build process posted per Kilrah's recommendation https://www.rcgroups.com/forums/showpost.php?p=48992051&postcount=7927

As a quick fix you could follow my description to setup a current build environment for opentx (posted here in another issue) and then build 2.3.15 yourself. Just tested with...