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I have asus chromebox which I installed Ubuntu 14.04.2 on.

When I connect headphones, I can see them in the volume control application, but they are not switched to automatically, when I select the headphones in the volume control app, i can hear just fine. When I disconnect the headphones the sound goes back to HDMI.

I have tried to change alsa-base.conf and everything else I could find online. Couldn't find a way to set it as default in pavucontrol (even when I set it as default here, it doesn't change anything) or alsamixer. Here is all the info I could find from my chromebox that might help.

alsa-base.conf

alsa-info.txt

Anyone has any ideas?

Shiran
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  • run alsamixer in terminal and press F5 to see all the controls. Try plugging and unplugging the headphones, and see how the controls change. MM means muted, numbers mean there's volume. See if when you plug in, you have headphones switch to MM. See if Auto-Mute is set to enabled or not. – Sergiy Kolodyazhnyy Jul 03 '15 at 21:01
  • I ran it, there is no change whether i connect the headphones or not, the only thing that is muted in the mic and beep. There is no Auto-muto. – Shiran Jul 04 '15 at 04:54
  • Use Sound Switcher indicator Refer this post link: Post – Abhinandan Sep 08 '17 at 04:48

1 Answers1

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Since I couldn't find a way to do this, I wrote my own script.

I set it to run from /etc/rc.local (as local user) in the background so it would run when the computer is restarted.

The script checks if the headphones are connected or not (run "amixer -c 0 contents" once headphones are connected and once not and find under which numid the headphones are). If the connection status has changed, it changes the default sink (I have only two drivers so I wrote changeDriver 1 and changeDriver 0, but it might be in a different order on different computers).

It runs infidelity with 2 seconds sleep in between.

Script

Shiran
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