This site contains user submitted content, comments and opinions and is for informational purposes only. Apple may provide or recommend responses as a possible solution based on the information provided; every potential issue may involve several factors not detailed in the conversations captured in an electronic forum and Apple can therefore provide no guarantee as to the. El Cap is known as one of the best choices for those old macs. 2010 Mac Pro here and it runs 10.14.5 just great with Logic 10.4.6. May 20, 2020 — I am unable to update to the latest version (10.5) of Logic Pro X.
Greetings Gowanus Mike,
Thanks for using the Apple Support Communities!
From your question, I understand that GarageBand seems like it is not picking up audio. To begin troubleshooting this situation, I would make sure the input source for the track is set correctly.
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Set the input source for the track
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Select the track you want to use, then click the Smart Controls button in the control bar.
Click the Inspector button in the Smart Controls menu bar to open the Smart Control inspector.
In the Recording Settings section, click the Input button to switch between a stereo input channel pair and a mono input channel, then choose the source from the Input pop-up menu.
Have a great day!
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Feb 2, 2016 6:58 AM