After several days which i've tried to resolve my problem with the sound in my laptop i've decided write us.
I've installed Ubuntu 7.10. Because of the sound don't play I installed ALSA 1.0.16 and then, it recognized the card and said that installed it correctly, however, the sound is off.
I've followed the steps at URL: https://help.ubuntu.com/community/HdaIntelSoundHowto and read a lot of webs with diferents solutions but I can't resolve the problem.
> I run alsamixer and there aren't channels muted.
> I've installed alsaconf many times and nothing.
> I've read the ubuntu guide.
> Only get sound adding the line "options snd-hda-intel model=lenovo" at the end of the file /etc/modprobe.d/alsa-base but this produced a deafening sound.
Please, help me.