thx garduno i have a satellite a100-307 deleting everything and adding to /etc/modprobe.d/alsa-base the following works for me
options snd-hda-intel model=3stack -- Intel_hda alsa/realtek codec feisty no volume https://launchpad.net/bugs/94373 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
