Intel HDA (ICH6) solution!
Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) High Definition Audio Controller (rev 04)
A lot of people have problems with this and much of those point a finger to ubuntu when in fact this is an Alsa problem and should have been solved before the alsa support for this card went into the kernel.
First of all there loads of people that have problems during boot when hotplug loads this module, the sollution is to boot in recovery mode and run
$> chmod -x /etc/init.d/hotplug
Now you will boot into ubuntu but without sound and a probably without some of other stuff, but at least you will boot.
The problem with the intel-hda module is solved in alsa-1.0.9, which you can find in kernel 2.6.14 or on the alsa website. So, if you compile the 2.6.14 kernel or the >= alsa 1.0.9a your problem will be solved.
Since the 2.6.14 kernel solves loads of laptop trouble (especially on new ones), I took this solution, but if everything else works alright, I advise to take the easy road and compile the new alsa drivers.
A lot of people that get this card to work also complain about the headphones output that is not working, this should be solved in alsa 1.0.10, so if you recompile your alsa drivers, keep in mind of taking really the last version.
after compiling the kernel and the drivers, you should not forget to run
$>sudo chmod ug+x /etc/init.d/hotplug
to reactivate hotplug during boot.
I solved my trouble with this solution on my Asus A3W00E