Please open the file /etc/modprobe.d/alsa-base.conf as root, and add the
following line to the end of the file:

options snd-hda-intel model=acer-aspire-7730g

Save the file, and reboot. Please test to see whether you have sound.
Please also test to see whether the internal speakers are muted when you
connect headphones.

 affects ubuntu/alsa-driver
 status incomplete


** Changed in: alsa-driver (Ubuntu)
       Status: New => Incomplete

-- 
[Realtek ALC888] No sound at all after update. Acer 7736g
https://bugs.launchpad.net/bugs/658674
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