With the snd-hda-intel driver, chances are you need to tune the module options. 
Look here:
zless /usr/share/doc/alsa-base/driver/ALSA-Configuration.txt.gz

Then search for hda-intel and look at the "model" options. You may need
to try a few. Start with "model=basic". Between making a change you
either need to reboot or completely restart alsa. If you want to do it
without reboot, you should start your computer with a plain xterm
session (no artsd, pulseaudio or the like), test, make a change to
/etc/modprobe.d/alsa-base, /sbin/alsa unload, verify alsa modules have
been unloaded by: lsmod | grep snd (which should show nothing at this
time), modprobe snd-hda-intel (check lsmod again), test again, repeat as
needed.

-- 
Intel ICH8 Rev 03 ALC8888 Headphone sense does not work
https://bugs.launchpad.net/bugs/156713
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