[pulseaudio-tickets] [Bug 42353] Mistreats headphone port with dysfunctional ALSA Master volume on ICH7

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=42353

--- Comment #35 from Raymond <superquad.vortex2 at gmail.com> ---
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/Documentation/sound/alsa/Procfile.txt

AC97 Codec Information
----------------------

card*/codec97#*/ac97#?-?
    Shows the general information of this AC97 codec chip, such as
    name, capabilities, set up.

card*/codec97#0/ac97#?-?+regs
    Shows the AC97 register dump.  Useful for debugging.

    When CONFIG_SND_DEBUG is enabled, you can write to this file for
    changing an AC97 register directly.  Pass two hex numbers.
    For example,

    # echo 02 9f1f > /proc/asound/card0/codec97#0/ac97#0-0+regs

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