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    Subjectsnd-hda-intel prevents machine to power off

    Hi Takashi,

    If I have some process with the sound device opened in my eeepc
    (say KDE's kmix) and try to power off the machine, for example with:

    # echo o > /proc/sysrq-trigger

    The machine will not power off.

    But it does work if I remove the snd-hda-intel module before issuing
    the echo above.

    This problem seems to be pretty popular among distros, I could find
    it reported for Mandriva, Ubuntu and Fedora.

    Its workaround is also documented in a few wikis: people are doing
    a 'rmmod snd-hda-intel' in the last halt stage (ie, halt script
    in etc).

    I have tested with 2.6.27.4 and latest 2.7.28-rc2.

    How I can I help you to debug this?

    Thanks.

    --
    Luiz Fernando N. Capitulino


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