I have the same issue in a Dell Precision M90. Following the advice of reporting the "wrong wiring stuff" upstream, I found at alsa's bug tracking system that it is already reported (I think by the gust at the laptop testing team, not sure).
I am not quite sure to understand, but they say this is the correct behavior specified by the datasheet of stac9200.
Maybe someone that is more on topic might take a look to the discussion.
I have the same issue in a Dell Precision M90. Following the advice of reporting the "wrong wiring stuff" upstream, I found at alsa's bug tracking system that it is already reported (I think by the gust at the laptop testing team, not sure).
https:/ /bugtrack. alsa-project. org/alsa- bug/view. php?id= 4890
I am not quite sure to understand, but they say this is the correct behavior specified by the datasheet of stac9200.
Maybe someone that is more on topic might take a look to the discussion.