How To Fix NO Audio and Mic After Wake on Mac OS X

| January 29, 2017 | 12 views

These days with the new and improved Mac OS X and macOS Sierra, on our MacWannaBe,  the speaker sound and mic don’t work after wake up from sleep. They come in many symptoms: no speaker after wake, plugin a headphone and pull out, the speakers work again or only failed when the AC charger plugged in and work with not plugged in.

     Codec Commander info.plist    ALC255-ALC283,etc profile

First we need to install EAPD (External Amplifier) codec-commander from Rehabman – copy the hda-verb to /usr/bin

sudo cp hda-verb /usr/bin

Now if everything works with the sound then your codecs work with this EAPD codec-commander. If the kext is installed and it failed like described above, then you need to modify the info.plist in the kext itself. Change Perform Reset on EAPD Fail to TRUE.

<key>Default</key>
<dict>
<key>Check Infinitely</key>
<false/>
<key>Check Interval</key>
<integer>3000</integer>
<key>Custom Commands</key>
<array/>
<key>Perform Reset</key>
<true/>

<key>Perform Reset on EAPD Fail</key>
<true/>

<key>Perform Reset on External Wake</key>
<true/>
<key>Send Delay</key>
<integer>300</integer>
<key>Sleep Nodes</key>
<true/>
<key>Update Nodes</key>
<true/>
</dict>

Look for your codec- mine is ALC255 and it uses alc283,etc modify perform reset to TRUE and change the delay from 10 to 300 also.

<key>Perform Reset</key>
<true/>
<key>Send Delay</key>
<integer>300</integer>

<key>Sleep Nodes</key>
<false/>
</dict>

Re-install the kext to S/L/E  with kext helper b7 to get it working. Now everything should work perfectly with the sound.

 

 

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