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    SubjectRe: [3.6.9 -> 3.7.1 regression] sound: snd_hda_intel codec probing issue?
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    Le jeudi 03 janvier 2013 à 10:19 +0100, Takashi Iwai a écrit :
    > At Fri, 28 Dec 2012 15:25:40 +0100,
    > Vincent Blut wrote:
    > >
    > > Hi,
    > >
    > > Since I updated to Linux 3.7.1, listening to some audio/video bits
    > > frequently cause the following:
    > >
    > > [ 7896.166946] hda-intel: azx_get_response timeout, switching to polling
    > > mode: last cmd=0x020c0000
    > > [ 7897.173444] hda-intel: No response from codec, disabling MSI: last
    > > cmd=0x020c0000
    > > [ 7898.179932] hda_intel: azx_get_response timeout, switching to
    > > single_cmd mode: last cmd=0x020c0000
    > > [ 7898.179983] hda-codec: out of range cmd 0:0:20:400:fffff7ff
    > > [ 9445.034371] plugin-containe[5873]: segfault at 7f44bb95e639 ip
    > > 00007f44e454bca0 sp 00007f44c91165f8 error 4 in
    > > libc-2.13.so[7f44e442c000+180000]
    > >
    > > It seems to be a codec probing failure (?). This is really fatal because
    > > the sound become very choppy and can't recover until I reboot.
    > > I'll try to play with 'probe_mask' kernel parameter to see if I can
    > > narrow the correct codec slots!
    > >
    > > By the way I can't reproduce this on 3.6.9, so is there something that
    > > changed in this area in 3.7.1?
    >
    > If it's new in 3.7, this could be a regression by runtime D3.
    > Try to pass power_save_controller=0 option to snd-hda-intel module
    > (or change it via sysfs dynamically).
    >
    >
    > thanks,
    >
    > Takashi

    Hi,

    That makes sense, however I can't reliably reproduce this so I'll report
    back later.

    Thanks and happy new year!

    Vincent

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