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I'm new in the Linux world. So I've installed Ubuntu 20.4 on my Macbook Air 2014... Everything works fine, audio, microphone, however, my problem arises when I try to plug in the headphone. The audio works fine, but I can't seen to make the headset mic to work.

I did some research, found this topic

Did all the workarounds... I've looked up on the kernel website to see which codec my computer uses:

Cirrus Logic CS4208 mba6 MacBook Air 6,1 and 6,2

Then I've openned Visual Studio and added the line bellow at the bottom of /etc/modprobe.d/alsa-base.conf

options snd-hda-intel model=mba6

After reboot, nothing has changed. Does anyone know how to fix this problem?

digolira2
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  • There is a very old bug report here: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1410618 It may help if you mark the bug as affecting you? – krumpelstiltskin Jan 13 '21 at 13:41

1 Answers1

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Ok folks I managed to solve the issue:

First check without unplugging the cable the result of:

sudo hdajacksensetest -a

Then connect the cable and run it again:

sudo hdajacksensetest -a

There should be some difference, with now some pin marked as "(Not connected): present = Yes" which initially (without the cable) showed "(Not connected): present = No". If this is not the case your cable is not being detected and you may have another issue.

Then run:

cat /proc/asound/card*/codec* | grep Codec

And make sure it is Cirrus Logic CS4208 , if that is the case, search the particular model of your computer here: https://www.kernel.org/doc/html/latest/sound/hd-audio/models.html (in the CS4208 section if that is your case) find the code of your computer: mbp55 or imac27 or imac27_122 and then edit /etc/modprobe.d/alsa-base.conf. Erase every line in there and write (supposing your model was mbp55):

options snd-hda-intel model=mbp55

Then restart the computer and it should work (Solution by Doug White)

Cacti-Math
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