[ubuntu] stereo separation issues, intel audio controller

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http://ubuntuforums.org – I am using Ubuntu 11.10 on an Advent 8111 laptop. The only problem I have is with the audio device which is an 'Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02)'. The nature of the problem is that there seems to be an issue with the L & R stereo separation, almost as if there is some kind of signal cross-bleed between the two channels. Some degree of stereophonic functionality is audible,(L & R separation of instruments in a stereo mix), but when i pan left or right using the ubuntu sound settings, neither speaker is fully muted. Also, when the pan control i (Hardware)