Ubuntu 21.04 on iMac 19,2 Model - No Sound Output

I'm really confused as to why no sound is coming out of the speakers or headphones. Ubuntu seems to recognize all of the devices just fine. From the attached images you can see the audio meter is moving while I'm playing music. I've included the settings screen and the alsamixer output. I can't seem to find anything online to even really troubleshoot this. Any troubleshooting suggestions would be helpful.

enter image description here

enter image description here

When I use sudo dmesg | grep -i sound", here is the result I get:

[ 21.484127] input: HDA ATI HDMI HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input7 [ 21.484185] input: HDA ATI HDMI HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input8 [ 21.484226] input: HDA ATI HDMI HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input9 [ 21.484257] input: HDA ATI HDMI HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input10 [ 21.484279] input: HDA ATI HDMI HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input11 [ 21.484319] input: HDA ATI HDMI HDMI/DP,pcm=11 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input12

6 Reset to default

Know someone who can answer? Share a link to this question via email, Twitter, or Facebook.

Your Answer

Sign up or log in

Sign up using Google Sign up using Facebook Sign up using Email and Password

Post as a guest

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

You Might Also Like