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Old Oct 24th, 2019, 07:54 PM   #1
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Sound issues.

I have been running my MacMini (late 2014) OSX 10.13.6 without any fuss. I updated the iTunes app as directed and as is my normal practice but then .....
I have now developed a glitch. Suddenly the sound will cut out . and I have to reboot the mac to restore it. It can happen after a few hours or a couple of days of use.
iTunes will not play, Youtube will show video but no sound, Games will play but no longer have sound, homemade videos will play but no sound.
Firstly I checked my Sys Prefs Sound - OK. I then Checked my Xternal Speakers - OK. I tried the Internal speakers - no sound, I then shutdown the mac and pulled out the power cord for a few secs then reinserted and rebooted. I zapped the PRAM. I got terminal to check and reset prefs. I reinstalled a new system using Recovery mode.
Nothing works.
Can anyone help please?
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Old Oct 26th, 2019, 07:45 AM   #2
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Is there any other software at play (Soundflower, AirFoil?) Might be worth taking a look in 'Audio MIDI setup'
Are there potentially any Bluetooth devices paired with the Mini, that might wander in and out of range?
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Old Oct 26th, 2019, 08:52 AM   #3
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Thank you for your reply. 'Soundflower' is installed it seems, 'Airfoil' is not. I can only think that it must have been installed through another sound editor I use - at least, I guess. Even so, nothing is recently installed. I don't believe Bluetooth would come into play.

Still doesn't explain why this has suddenly happened. Should I go back to an old backup pre the problem occurring?

Thanks again.
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Old Oct 27th, 2019, 03:04 AM   #4
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I found the 'Soundflower' extension in the 'Audio Midi Setup' in 'Utilities'. However, I cannot see how to trash it, nor do I understand what will occur if I do somehow trash it.
All advice greatly appreciated.
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Old Oct 28th, 2019, 05:02 AM   #5
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It basically intercepts audio, and allows you to send it elsewhere, be that an app, or another audio device virtual or otherwise. It's not usually something you install directly but rather is part of the install process of other apps.

Possible that updating iTunes also changed the default output (not sure why that would happen) You could try making sure SoundFlower is not the default output or input audio device.

Removing SoundFlower will likely prevent whatever app included it from functioning properly. But these directions *may* work: https://support.shinywhitebox.com/hc...ng-Soundflower
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Old Oct 29th, 2019, 10:50 AM   #6
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Thank you again for the advice. Unfortunately, I tried the uninstall several times and rebooted as per directions, but Soundflower stays doggedly within the Audio Midi Setup. I think a complete reformat of the HD seems the only option. Aaargh.
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Old Oct 29th, 2019, 12:08 PM   #7
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Gee, it appears to be such a simple remove process:

How to uninstall Soundflower on Mac:

Please go to Finder-> /System/Library/Extensions.
Find Soundflower.kext.
Remove it, then reboot your Mac.
Soundflower plug-in will be fully removed from your Mac.

Have you tried this?
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Old Oct 29th, 2019, 07:56 PM   #8
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Brilliant. Totally removed. Thank you both for your invaluable help. Now to see if the sound stays constant and then hopefully close this blog. Much appreciated.
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Old Oct 30th, 2019, 03:09 AM   #9
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Quote:
Originally Posted by bobloz View Post
Brilliant. Totally removed. Thank you both for your invaluable help. Now to see if the sound stays constant and then hopefully close this blog. Much appreciated.
Glad it worked, hope it is now solved completely for you.
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Old Oct 31st, 2019, 09:25 PM   #10
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Oh dear, sorry to report the fault is still with me. Worked well for 3 days and then suddenly no sound. I haven't varied the routine at all, nor fired up any sound editor, just the usual stuff - a couple of games I play, iTunes, some Youtube, photo-editing - etc -nothing new or out of the ordinary. Soundflower has not resurfaced and Audio Midi setup shows only Built-In. Sys Prefs is switched to Headphones and I have not altered anything. I guess a complete format and reinstall is my only option.
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