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    ALSA: hda - adding a DAC/pin preference map for a HP Envy TS machine · 6ab42ff4
    Hui Wang 提交于
    On a HP Envy TouchSmart laptop, there are 2 speakers (main speaker
    and subwoofer speaker), 1 headphone and 2 DACs, without this fixup,
    the headphone will be assigned to a DAC and the 2 speakers will be
    assigned to another DAC, this assignment makes the surround-2.1
    channels invalid.
    
    To fix it, here using a DAC/pin preference map to bind the main
    speaker to 1 DAC and the subwoofer speaker will be assigned to another
    DAC.
    
    Cc: <stable@vger.kernel.org>
    Signed-off-by: NHui Wang <hui.wang@canonical.com>
    Signed-off-by: NTakashi Iwai <tiwai@suse.de>
    6ab42ff4
patch_sigmatel.c 136.8 KB