I found the solution : the "headphone jack sense" must be activated in the gnome-volume-control (accessible in the notify area). Once the option is activated, the headphones are well detected.
Users of the nforce3 chips appear to have this kind of problem.
I found the solution : the "headphone jack sense" must be activated in the gnome-volume- control (accessible in the notify area). Once the option is activated, the headphones are well detected.
Users of the nforce3 chips appear to have this kind of problem.