why do the output of alsa-info (speaker not working) missing many
important info (e.g.alsactl,..amixer, sysfs pin cfg) ?

it is normal the speaker is muted when either one of the headphone jack
is plugged


control.36 {
                iface CARD
                name 'Front Headphone Front Jack'
                value true
                comment {
                        access read
                        type BOOLEAN
                        count 1
                }
        }
        control.37 {
                iface CARD
                name 'Front Headphone Surround Jack'
                value false
                comment {
                        access read
                        type BOOLEAN
                        count 1
                }
        }

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https://bugs.launchpad.net/bugs/1437512

Title:
  [Inspiron 1525, SigmaTel STAC9228, Speaker, Internal] unmute problem

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