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    SubjectRe: mm snapshot broken-out-2007-03-05-02-22.tar.gz uploaded
    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
    -
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