MacBook Air "fast playback" bug

Question

MacBook Air "fast playback" bug

Hello;

I am starting to notice every 48 hours, my Mac starts to have a fast playback bug, which means:

Final Cut Pro and iMovie skip to the end of the frame of a project
VLC does play videos properly, but with a black screen
Discord can play videos, however it can only play the audio
Mactracker does not play any startup or crash chime

I have tried:

Resetting the NVRAM
Killing coreaudiod

None of these have worked, and the issue still remains, and the only solution (at least, for me) is to restart my MacBook every single time I encounter this.

Also; killing coreaudiod just removes the audio device, which also makes me have to restart to get it back.

MacBook Air 11″, macOS 10.14

Posted on Mar 13, 2023 08:43 AM

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Answer 1

Mar 13, 2023 10:33 AM in response to approxostrich

Have you tried a Safe boot?

How to use safe mode on your Mac - Apple Support

Safe mode is non-destructive to user data. It’s not a cure-all, but very often corrects weird software behavior. When you're in safe boot, the machine will not be at its best performance, especially with graphics, but that's expected.

Also, I suggest that you run an EtreCheck evaluation of your Mac and post the results here. EtreCheck is a safe and recommended utility from a trusted developer and respected ASC contributor. The diagnostic app gathers important info about your hardware and software and reports it back to you. It is very highly regarded and meant to be used with Apple Support Communities to help others help you troubleshoot and resolve your Mac problems. The EtreCheck report will not include any personally identifiable info.

Please navigate to EtreCheck.com and download the free version. Be sure to enable full disk access when you install the app. Once you’ve run the app and created your report please post it with your reply to this message.

You must upload the full report. To learn how, please see: How to use Add Text when posting… EtreCheck Report.

We can use the EtreCheck report to look for the things that may be causing your problem and advise how to correct them.

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Answer 2

BDAqua

Level 10

250,007 points

Mar 13, 2023 10:33 AM in response to approxostrich

Start with this...

Safe Boot, (holding Shift key down at startup), does the problem occur in Safe Mode? Could take 10 minutes or more.

Safe mode attempts to repair Disks & clears lots of caches & loads safe Drivers, & prevents loading of 3rd party extensions, so if Safe Mode works try again in regular boot.

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