No Sound with Headphones but Sound with Stereo

Solution 1:

I posted the same question on Launchpad. Here was the answer I received from Mark Rijckenberg:

Please run the following command in a Terminal session:

gksudo gedit /etc/modprobe.d/alsa-base.conf

Using the gedit editor, add this line in the /etc/modprobe.d/alsa-base.conf file:

options snd-hda-intel model=dell-m6-dmic

Save the change, close gedit and reboot to test.

The first headphone jack now works. The second one has the same problem as before. I'm happy and hope that this might help someone else.

Solution 2:

It seems to be output sound card problem. Sound card automaticly change to hdmi output when 2 application conflicted with it. I fix that with run. It restore output to analog, again.

alsactl -F restore