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So far I have tried many methods to get my Laptop’s headphones’ jack to work under Gutsy Gibbon, but the results have been mixed and sometimes did not work at all. Well, the question now is: Could this be the much elusive fix to the Intel ICH8 Family (r3) Sound Card Problem?

Update: It finally worked (12-11-07)*!

–Step 1:

Go to ‘System’ > ‘Administration’ > ‘Software Sources’ > ‘Updates’ tab, and check ‘Unsupported updates (gutsy-backports)’.

Then go to Terminal and type:
sudo apt-get install linux-backports-modules-generic
(Source)

–Step 2:

Go to Terminal and type:
sudo apt-get install alsamixergui

Then add the line:
options snd-hda-intel model=vaio position_fix=0
To:
/etc/modprobe.d/alsa-base

*Results may vary!