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    SubjectRe: PC Beeps not working with HDA Intel module
    At Sat, 26 Jun 2010 13:25:04 +0200,
    Shérab wrote:
    >
    > Dear all,
    >
    > The problem is on a computer with an HDA Intel sound card, Intel G45
    > DEVCTG chip and appears will all version s of the kernel.
    >
    > Running e.g.
    > beep 440
    > produces a beep whose audible frequency is very low, definitely not 440
    > Hz.
    >
    > However, it is worth notiing that grub is able to produce a beep of the
    > right frequency at boot time.
    >
    > Can this problem be fixed ?

    There are a few ways.

    If you build your kernel with SND_HDA_INPUT_BEEP_MODE=2, or set the
    option of snd-hda-intel module beep_mode=2, you'll be able to switch
    to the native beep from HD-audio codec digital beep via muting "Beep"
    mixer switch.

    Or, if the value above is 0, it'll be always the system-native beep.
    This can be done also via writing sysfs codec hint, as documented in
    HD-Audio.txt.

    Alternatively, you can reload pcspkr module so that it grabs the beep
    output again over snd-hda-intel, "modprobe -r pcspkr; modprobe pcspkr"


    Takashi
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