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    SubjectRe: mm snapshot broken-out-2007-03-05-02-22.tar.gz uploaded
    Takashi Iwai wrote:
    > At Thu, 08 Mar 2007 12:05:49 -0500,
    > Randy Cushman wrote:
    >
    >> Takashi Iwai wrote:
    >>
    >>> At Thu, 8 Mar 2007 17:52:43 +0100,
    >>> Michal Piotrowski wrote:
    >>>
    >>>
    >>>> On 08/03/07, Takashi Iwai <tiwai@suse.de> wrote:
    >>>>
    >>>>
    >>>>> At Thu, 08 Mar 2007 16:42:26 +0100,
    >>>>> Michal Piotrowski wrote:
    >>>>>
    >>>>>
    >>>>>>> Also, it'd be helpful if you compare
    >>>>>>> /proc/asound/card0/codec97#0/ac97#0-0+regs file before and after the
    >>>>>>> patch. This reveals which register bits differ actually.
    >>>>>>>
    >>>>>>>
    >>>>>> a2.txt is form 2.6.21-rc3 witchout 831466f4ad2b5fe23dff77edbe6a7c244435e973
    >>>>>>
    >>>>>> diff -uprN a2.txt /proc/asound/card0/codec97#0/ac97#0-0+regs
    >>>>>> --- a2.txt 2007-03-08 16:36:47.000000000 +0100
    >>>>>> +++ /proc/asound/card0/codec97#0/ac97#0-0+regs 2007-03-08 16:36:49.447083597 +0100
    >>>>>> @@ -56,8 +56,8 @@
    >>>>>> 0:6e = 0000
    >>>>>> 0:70 = 0000
    >>>>>> 0:72 = 0004
    >>>>>> -0:74 = 1001
    >>>>>> -0:76 = 64a4
    >>>>>> +0:74 = 1201
    >>>>>> +0:76 = 7ca4
    >>>>>> 0:78 = 000c
    >>>>>> 0:7a = 0000
    >>>>>> 0:7c = 4144
    >>>>>>
    >>>>>>
    >>>>> OK, some wrong bits there. Could you try the patch below?
    >>>>>
    >>>>>
    >>>> Problem fixed. Thanks!
    >>>>
    >>>> (speaker-test -c6 -Dplug:surround51 is still broken)
    >>>>
    >>>>
    >>> Hm, how about turning off "Spread Front To..." control and run
    >>> speaker-test?
    >>>
    >>>
    >>> Takashi
    >>>
    >>>
    >>>
    >>>
    >> Michal and Takashi,
    >>
    >> I've been researching your issue this morning. I just noticed that your
    >> exchange had ensued.
    >>
    >> I configured my AD1986-based system as closely as I could to match your
    >> AD1985 mixer settings. In doing so, I experienced results similar to
    >> what I'm assuming you described: Only front channel sound came out of
    >> the surround and c/lfe jacks.
    >>
    >> Here is what I had to change to get the appropriate multichannel sound:
    >>
    >> 1) The command "speaker-test -c6" does not work on my system. I have to
    >> use "speaker-test -Dsurround51 -c6" (Perhaps this is related to running
    >> an old version of speaker-test.)
    >>
    >> 2) I disabled "Spread Front to Surround and Center/LFE"
    >>
    >> The explanation for 2) is this: There can be only one source for each
    >> of the Surround and Center/LFE jacks active at one time. When "Spread
    >> Front to Surround and Center/LFE" is disabled, the surround channels go
    >> to the the jacks; when this control is enabled, ONLY the front channels
    >> go to the surround and c/lfe jacks.
    >>
    >> Considering the register values Michal provided and Takashi's patch:
    >>
    >> The logic of the code is as follows: (Slightly simplifying,) functions
    >> is_shared_linein() and is_shared_micin() return TRUE if the mixer is
    >> configured for shared jacks AND NOT for 6 channel mode. In this case it
    >> is appropriate to
    >> set these bits (LODIS and CLDIS).
    >>
    >
    > Yep. So, can you confirm that my fix is OK?
    > Then I'll queue it up to ALSA tree.
    >
    >
    > thanks,
    >
    > Takashi
    >
    >
    >
    Takashi,

    I need to think this through before I can confirm. Something doesn't
    seem right.

    Let me figure out why I wrote ad1986_update_jacks() to be so different
    from ad1888_update_jacks().

    I'll keep you posted.

    Randy Cushman


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