Comment 17 for bug 1037763

@gonedcc
I am sorry for the wrong instruction, thanks for the correction.

My 1225c has not high sound level too. Maybe it is a hardware project choice. (???)
Note however that it depends a lot from the file you are playing. This is what I experienced.

The following are the instructions again but corrected:

Open Terminal

write this command:

sudo gedit /etc/apt/sources.list

this command open program gedit: now you can modify the file sources.list
add to the file the lines:

deb http://asus.archive.canonical.com/updates precise-yanshui public
deb-src http://asus.archive.canonical.com/updates precise-yanshui public

save the file
close the gedit windows

back to terminal write command:

sudo apt-get update

wait for the prompt then write:

sudo apt-get install alsa-hda-realtek-patched-dkms

wait for the prompt then write:

sudo reboot

wait for reboot

Test the sound using:
 System Settings -> Sound -> Test Sound