[ubuntu] Is there a driver for HP Pavilion 64 Bit built in sound card?

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http://ubuntuforums.org – I cannot get sound to operate on my HP Pavilion dv6 laptop. I recently upgraded from 10.04 to 12.10 but I am not sure that is the problem. I don't recall having sound with 10.04 either. Obviously I have not been using Linux much, at least not enough to recall if the sound worked. My dream is to get up to speed well enough with Linux to wean myself from MS. I just hate when they reshuffle the file system with every new version. Looking at past posts and sound problems with HP Pavillions, it appears that the problem goes back several years. Furthermore, it seems that no one has ever written a (Hardware)