Headphone jack not working?(CentOS 7-1503)

There was no sound when I plugged in my headphones.

The workaround was to edit /usr/share/pulseaudio/alsa-mixer/paths/analog-output-headphones.conf.
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#cd /usr/share/pulseaudio/alsa-mixer/paths/ 

#cp analog-output-headphones.conf analog-output-headphones.bak
#vim analog-output-headphones.conf
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Look for the section called [Element Speaker] and change it so that it looks like this:
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[Element Speaker]
switch = on
volume = ignore
=======================================================

reboot