Speaker not shown on Sound settings (Ubuntu Gnome 16.04)

"Speakers" is not shown in sound settings if headphones are plugged in. So, I cannot switch between speakers and headphone unless I unplug headphone.

I installed PulseAudio volume control and I can switch headphone to speakers using it. But it's weird because it says: Speakers (unavailable). Maybe the problem is about it?

I have searched it but most of the questions about speakers/headphones are not working. In my case, both are working but cannot switch using default sound settings.

Asus N551VW, Ubuntu Gnome 16.04.3, Realtek ALC668 audio driver.

Any help appreciated. Thanks in advance.

Solution 1:

I solved the problem following these steps:

Added this line to /etc/modprobe.d/alsa-base.conf

options snd-hda-intel model=dell-headset-multi

And then reloaded alsa:

sudo alsa force-reload
pulseaudio -k

But it didn't change anything. I restarted the machine to make sure and somehow it is resolved.

You can find your sound card model using cat /proc/asound/card0/codec* | grep Codec and its related model code from this file: https://github.com/Xilinx/linux-xlnx/blob/master/Documentation/sound/hd-audio/models.rst

Solution 2:

look in alsamixer playback controls

There is probably an option in Playback setting called auto-mute. change setting to 'disabled' to have sound from both speakers and headphones