Ubuntu – No sound into headphones

14.04alsaheadphonespulseaudiosound

I will make it quick : I have no sound in my headphones when they are plugged in on my Asus F200CA running Ubuntu 14.04, but :

I have sound in the laptop speakers when the headphones are plugged out.
If I boot up my laptop on a Live USB running Ubuntu 14.04, I have sound in the speakers and in the headphones.
If I open pavucontrol, I can "see" sound, but I can't hear it.

I already did some of the actions listed here.

I'm running Ubuntu 14.04, with Unity, and this bug appeared about a week ago.

I had the same problem for days (on a different laptop). The solution was to do the following two things:

Reset user configuration (as described in the Troubleshooting section of https://wiki.ubuntu.com/PulseAudio).
Make sure Independent HP is Disabled in alsamixer. To do that, just type alsamixer in a terminal, then choose your sound card (by pressing F6) and move to the Independent HP column.

Hope it helps!

Original Solution

Go to Realtek official site, accept the disclaimer, then download the audio driver for linux/unix. You need to select version 3 for Kernel 3 or later.
Setup necessary tools to compile this driver.

sudo apt-get install build-essential gcc make
Extract the downloaded file, run sudo ./install file from a terminal after going to the extracted folder to compile the driver.
Read the Readme.txt file for more information.
Install gnome-alsamixer by this command.
```
 sudo apt-get install gnome-alsamixer
```
Open the gnome-alsamixer by typing alsamixer in the dash.
Select the "Auto mute mode" in the new window.

Reboot and see whether it fixed now. (Step 6 and 7 might not necessary). Automute will automatically enabled upon restart

I have just found another solution:

(It worked for me with Only S/PDIF profile, Sound from both headphone and speaker and not being able to switch profile)

Add this ppa by the command

  sudo apt-add-repository ppa:ubuntu-audio-dev/alsa-daily

Update packages list. by
```
 sudo apt-get update
```
Then install "alsa-hda-dkms" package:
```
  sudo apt-get install alsa-hda-dkms
```

Reboot, And See the result!

You can change using System Settings->Sound->Output - just pick the device you want the sound to output on.