Comment 40 for bug 361878

Solved with a standard method:

only add the following lines on /etc/modprobe.d/alsa-base.conf :

# Lines for the ALC268 audio chipset can works.
options snd-cmipci mpu_port=0x330 fm_port=0x388
options snd-hda-intel index=0 model=toshiba position_fix=1