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10.4: Fix a muted Plantronics USB microphone on 10.4.10 System 10.4
After one of the recent 10.4.10 updates on an Intel iMac, the microphone on my Plantronics USB headset appeared to be disabled. The solution that worked for me was to use Applications » Utilities » Apple MIDI Setup, and access Properties For » Plantronics Headset under Audio Devices. At the bottom of the panel, there is a Mute checkbox, and unchecking this restored the microphone's operation.

I can't take credit for the fix; I found it via Google on macspeech.com. However, I thought this might be worth passing on to macosxhints.

The 10.4.10 update did not cause this problem on a G4 PowerBook, so I believe this is related to the recent Intel audio fix that Apple released. However, after launching Apple MIDI Setup on the G4, the microphone was disabled and the checkbox was not accessible. The only solution there was to unplug and re-plug the headset's USB cable.
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10.4: Fix a muted Plantronics USB microphone on 10.4.10 | 6 comments | Create New Account
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10.4: Fix a muted Plantronics USB microphone on 10.4.10
Authored by: StevenRiggins on Jul 17, '07 08:20:31AM

I blogged about this awhile ago and it seems to mainly happen with Skype 2.6.0.148.

The other day it didn't actually mute the audio, but it set the volume to 0.



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10.4: Fix a muted Plantronics USB microphone on 10.4.10
Authored by: tji on Jul 17, '07 10:51:31AM

I also ran into this problem with my Plantronics USB audio adapter, and the MIDI audio thing worked for me.

I think you have to re-do the fix after each reboot.

There was also a post 10.4.10 audio fix, but I'm not sure if it addressed this issue.


Prior to 10.4.10, I had problems with the Plantronics adapter a few times.. When I would plug it in, occasionally my whole system (MacBook Pro Core2Duo) would lock up -- no mouse movement, nothing just had to power down & restart.



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10.4: Fix a muted Plantronics USB microphone on 10.4.10
Authored by: allanBook on Jul 20, '07 10:25:09PM

How long did you wait before restarting?

My systems exhibits the same "locked up" behavior whenever I reconnect my plantronics audio .85 when I get back home, but it usually becomes responsive again in about 5-12 minutes.

I don't know why it takes so long, but I figure it has to do with all the apps I have running plus the fact that I use filevault and even have my virtual memory encrypted on my C2D MBP (2gb ram).

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Related hint for Logitech headsets
Authored by: victory on Jul 17, '07 03:22:40PM
RE: muted Plantronics mic
Authored by: teach on Jul 24, '07 11:37:25AM

THANK YOU!!!

I was trying to do a voice over for a tutorial I was making in Final Cut Pro and could not get the mic to work. I seemed to recall reading something here at osxhints about Plantronics mics recently and dug this up. It described EXACTLY what was happening to me, and your solution was pitch perfect.

Many thanks - I'm a life long Mac guy and I'd never ever used this utility for any reason before. I'd NEVER have found this on my own.



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10.4: Fix a muted Plantronics USB microphone on 10.4.10
Authored by: tji on Aug 13, '07 04:52:32PM

Is there any way to automate this? Or any permanent fixes?

This method works fine as a workaround, but it resets every time the system is rebooted.

Is there any way to tweak these settings via the command line? I looked at "sysctl", but didn't see anything relevant in the options.



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