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Cikson
Asked: 2015-04-29 12:59:10 +0800 CST

On reboot headphones are muted

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After I upgraded Ubuntu to 15.04 alsamixer mutes my headphones on every reboot. I have tried changing settings in alasamixer and saving it with sudo alsactl store. I've edited file /etc/pulse/default.pa by commenting line #load-module module-switch-on-port-available I've edited file /usr/share/pulseaudio/alsa-mixer/paths/analog-output-headphones.conf like this:

[Element Speaker]
; link to muting
switch = mute
; set volume to zero, so only the master slider controls playback volume. This gives better linearity.
volume = zero

But nothing works

sound

3 Answers

  1. For anyone poor like me, searching all over around and only got it fixed after ... one year. Short Answer: Try this command:

     pactl set-sink-port <card> <port>

    Example: I have two sound card, Card #0 and Card #1

    pactl set-sink-port 1 analog-output-headphones

    You can get your card number and port by this command

    pactl list

    If that make your sound output correctly, you can persist that to default (i.e. every system boot or login) by putting this line into /etc/pulse/default.pa

    set-sink-port 1 analog-output-headphones

    Long answer: My system has both PulseAudio and Alsamixer installed (default in Ubuntu 16.04). I install both pavucontrol' andgnome-alsamixer` to monitor things happen.

    When I plugged my headphone jack in, PulseAudio can not detect the plugged-in state. It is still showed 'Unplugged'. In PulseAudio Volumn Control, I change ananlog output port to Headphone, then watch in AlsaMixer, I see that the Headphone is automatically unmuted, and volumn set to 100% level.

    That means all methods on tweaking AlsaMixer will never work. We need to fix the PulseAudio, to set to the output port we want, by those commands I wrote above.

    • 2

  2. I had the same problem on my Dell 27 All in One.

    The only workaround for me was to add a command to /etc/rc.local

    The steps are:

    sudo nano /etc/rc.local

    Add the following command before the exit 0 line

    sleep 10 && amixer -q set Headphone 100 unmute
    • 1
  3. Best Answer

    With new version of Ubuntu and new motherboard it fixed it by itself.

    • 0