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    SubjectRe: Regression: audio not detected "cannot build controls"
    At Tue, 14 Dec 2010 11:54:49 -0800,
    Jesse Barnes wrote:
    >
    > Sound on my Sony Vaio used to work back in 2.6.36 but no longer works.
    > At boot time I see a message like this:
    >
    > [ 7.159241] hda_codec: ALC889: BIOS auto-probing.
    > [ 7.159246] hda_codec: ALC889: SKU not ready 0x411111f0
    > [ 7.160629] input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/input/input6
    > [ 7.164300] hda_codec: cannot build controls for #0 (error -16)

    EBUSY isn't used so much in the driver code, so I wonder how it can
    get. Could you rebuild with CONFIG_SND_DEBUG_VERBOSE=y and check more
    messages?

    Also load snd-hda-intel module with probe_only=1 option.
    This will initialize the codec without parsing, so that you can still
    get the codec info. Run alsa-info.sh (with --no-upload option) and
    attach the output for further analysis.


    thanks,

    Takashi


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