At Wed, 07 Mar 2007 23:22:36 +0100,
Michal Piotrowski wrote:
>
> Hi Takashi,
>
> Takashi Iwai napisał(a):
> > At Wed, 7 Mar 2007 11:50:24 -0800,
> > Andrew Morton wrote:
> >> On Wed, 7 Mar 2007 20:41:30 +0100 "Michal Piotrowski" <michal.k.k.piotrowski@xxxxxxxxx> wrote:
> >>
> >>>>> 831466f4ad2b5fe23dff77edbe6a7c244435e973 is first bad commit
> >>>>> commit 831466f4ad2b5fe23dff77edbe6a7c244435e973
> >>>>> Author: Randy Cushman <rcushman_linux@xxxxxxxxxxxxx>
> >>>>> Date: Tue Dec 19 18:42:16 2006 +0100
> >>>>>
> >>>>> [ALSA] ac97 - fix microphone and line_in selection logic
> >>>>>
> >>>>> This patch fixes the Microphone and LINE_IN select logic for
> >>>>> Analog Devices surround codecs with shared jacks. The existing
> >>>>> code can never utilize the shared jacks for Microphone and LINE_IN
> >>>>> due to the reversed jack selection logic. The patched code
> >>>>> correctly selects the shared jack for input if the 'Channel Mode'
> >>>>> selector does not specify that the jack is to be used for output.
> >>>>> Specifically, in '2ch' mode the Center/LFE jack is used for
> >>>>> microphone input and the Surround jack is used for LINE_IN,
> >>>>> in '4ch' mode the Center/LFE jack is used for microphone input
> >>>>> and the Surround jack is used for output, and in '6ch' mode
> >>>>> both jacks are used for output.
> >>>>>
> >>>>> Signed-off-by: Randy Cushman <rcushman_linux@xxxxxxxxxxxxx>
> >>>>> Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
> >>>>> Signed-off-by: Jaroslav Kysela <perex@xxxxxxx>
> >>>>>
> >>>> Is 2.6.21-rc3 similarly broken?
> >>> Yes.
> >>>
> >> OK. Can you please confirm that applying the below fixes 2.6.21-rc3?
> >>
> >> If so, I'll queue it up for application in a week or two if there is no
> >> progress on this.
> >
> > [sorry for the late interrupt - I'm just back from a vacation]
> >
> > Could you postpone reverting for a while?
> > I guess this possible regression is limited only to a certain type of
> > ac97 codec chip. The patch applied there was a fix for many codec
> > chips.
> >
> > Which codec chip are you using specifically? Please check
> > /proc/asound/card0/codec97#0/* file(s).
>
> 0-0/0: Analog Devices AD1985
OK, that's good to know.
> control.43 {
> comment.access 'read write'
> comment.type BOOLEAN
> comment.count 1
> iface MIXER
> name 'Spread Front to Surround and Center/LFE'
> value true
> }
So, you're playing two-channel samples and get no output from surround
and CLFE? Or, does it happen if you play a real 5.1 channel file?
(for example, try speaker-test -c6)
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.
thanks,
Takashi
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