I have an Asus K55V. After loading Ubuntu 12.04, I didn't get any sound on my headphones. My speakers work fine... Can you help me with this problem?
I had the same problem on K55V laptop. Thanks to some posts at Ubuntu Forums I found a workaround for this:
For now I was not able to find full solution for this problem but shutdown looks like good workaround. Hope this helps.
set /etc/modprobe.d/alsa-base.conf file adding at the end of the file the following
options snd-hda-intel position-fix=1
and login again or reboot. It works for me