dB min is -64  (0%)
dB Max is 0 (100)


state.SB {
        control.1 {
                iface MIXER
                name 'Front Playback Volume'
                value.0 64
                value.1 64
                comment {
                        access 'read write'
                        type INTEGER
                        count 2
                        range '0 - 64'
                        dbmin -6400
                        dbmax 0
                        dbvalue.0 0
                        dbvalue.1 0
                }
        }


aplay -D hw:0,0 LRMonoPhase4.wav


 alsamixer -c0

keep left at 100%

do you still hear the sound at right speaker when

1) right channel to 0%
2) mute right channel

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https://bugs.launchpad.net/bugs/1237805

Title:
  [GA-MA78GM-S2H, Realtek ALC889A, Green Line Out, Rear] left-right
  channels output to both sides

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