I have no sound on my imac, with 12.04 from a clean install from CD. I have checked alsamixer and a number of other things. Still no sound.

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  • "a couple of other things": please elaborate - else you might say "did this already" to many suggested steps. – guntbert Dec 4 '13 at 21:14


This is what I did to fix it.

Open terminal

sudo gedit /etc/modprobe.d/modprobe.conf

A new file will be opened, write a line below then save.

options snd_hda_intel model=mb5

Close file Reboot the computer. After rebooting, speaker will show in a mute, adjust the sound preference and set "The selected device" to "Analog Stereo Output" or 'Analog Stereo Duplex'"

That was a direct quote from ubuntu forum.


I tried for what seemed like ever to get the headphone sound to work on my iMac with 12.04 and 12.10. Nothing worked except recently:

upgraded to Linux Kernel 3.7.3.

All is working spiffy from the headphone jack now.

Hope this helps.



On a mac mini:

  1. Sound settings
  2. Output tab
  3. Highlight Headphones. Adjust output volume.
  • 1
    This question is about an iMac. Not a Mac mini. – Seth Dec 4 '13 at 2:20

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