Hi. I've got a dv-6000 hp computer (2007 aprox) and I had on it Vista. After I decidid to install Windows 7 and ubuntu 12.04. Everything is working fine in Windows and in Ubuntu but I have a problem with the audio in Ubuntu.

Every time I start in Ubuntu sounds through the speakers a little crack sound when the deskop it's just loaded. Then this annoying crack continues ever half second aproximately. The thing is that when I reproduce anything (mp3 or a video on youtube) that crack sound stops, and when the audio is finished it reapperas. I googled the problem and I found that I should change a line in alfa-base.conf

options snd-hda-intel power_save=10 power_save_controller=N

And subtitute de 10 for a 0. I entered ind the file and I could see that I don't have that line. I wrote it, anyway, but the problem wasn't solved.

I don't know what to do but this thing makes that I can't use Ubuntu.

Any idea how can I fix de problem?

Thank you very much