New Imac (2007) sound alsa 1.0.15 patch

With my new work i had a new computer to develop my apps.
That is a 24 inches imac with core 2 duo T7700 and 1 gig of ram.
Installing Debian Os in dual boot with macOS was quite easy but after two working days i still cannot have any sound.
I’ve googled a lot and i found a solution in ubuntuforums.
this is the procedure to make sound work with ubuntu (thx to nicfagn from ubuntuforums)
Download alsa-driver-1.0.15 sources (this method works even if you use the latest nightly build driver snapshot)
sudo apt-get install libc6-dev patch (installs developer libraries and patch program)
extract driver somewhere (es. Desktop) and move to ~/Desktop/alsa-driver-1.0.15/alsa-kernel/pci/hda
download the attacched file attacched file into that directory and type the following command
patch < alsa-1015-imac.txt
next step is to configure the drivers to do it type the following
./configure --with-cards=hda-intel (we are gonna to compile just hda-intel driver)
make -j3 (supposing you have a multicore processor)
if you have gutsy you have to type this command
sudo mv -v /lib/modules/$(uname -r)/ubuntu/media/snd-hda-intel/snd-hda-intel{,-ubuntu}.ko
and than
sudo make install-modules
After an alsa reload you should hear something from your speakers
hope this is useful