[alsa-devel] no front speaker sound with ALC262

Wed Feb 27 00:19:58 CET 2008

Hi,

I compiled the HG version. The driver behaves in the exact same way as the
1.0.16 version. Very very low volume on the headphone output, like hearing
sound form another channel on a mixer because of crosstalk (i don't know is
this is the correct translation).

I also compiled hda_verb and used it to twiddle around with some of the
connections. So far no luck.

Can I do something to boost the volume level? Or is this also caused by the
incorrect pin wiring of the device? Maybe the speakers do output some sound
but because of the the low soundlevel i can't hear it.

Thanks,

Rene

On Tue, Feb 26, 2008 at 1:21 PM, Rene Dohmen <acidjunk at gmail.com> wrote:

> Thnx for your answer.
> The preset models ( i tested the ones in 1.0.16 didn't work so i'll
> have a try with the latest HG version)
>
> Having fun,
>
>        Rene
>
> Op Feb 26, 2008, om 1:10 PM heeft Takashi Iwai het volgende geschreven:
>
> > At Mon, 25 Feb 2008 13:49:43 +0100,
> > Rene Dohmen wrote:
> >>
> >> Hi List,
> >>
> >> Is there any chance that this bug will be fixed soon?
> >
> > Well, it's up to you.
> >
> > One of the problems is that BIOS on your machine doesn't give the
> > useful information for auto-probing at all.  A typical workaround in
> > such a case is to try the existing preset models.  Pass model=basic or
> > model=benq to snd-hda-intel module, for example.  The available model
> > values can be found in ALSA-Configuration.txt.  Don't forget to
> > check and adjust the mixer status again after changing the model
> > because the mixers appear completly differently depending on the
> > model.
> >
> > If none of the existing models doesn't match with your device, we have
> > to figure out the exact codec configuration.  For some codecs like
> > ALC880 or ALC260, you have model=test option that allows you to test
> > all codec configurations via mixer interface.  Unfortunately, ALC262
> > has no model=test support, so you have to do check it literally
> > manually.  Below is a brief instruction how to explore the mysterious
> > world of HD-audio codecs.
> >
> > First of all, install the very latest ALSA HG version.  Don't stick
> > with 1.0.16 release.  You can use the daily snapshot tarball instead,
> > too.
> >
> > Then, get hda-verb program found on
> >       ftp://ftp.suse.com/pub/people/tiwai/misc/
> > Extract the tarball, run make.  Install it or invoke it locally.  This
> > program can be usable only as root.
> >
> > The next step is to get ALC262 datasheet from Realtek web site.  Take
> > a look at the block diagram page.  There are pins in the right side
> > and two DACs in the left side.  We have to set up the correct pins and
> > connect to the DAC properly.
> >
> > Now, assume the port-D (NID 0x14) is the speaker output.  Check
> > /proc/asound/card0/codec#0 and look for Node 0x14.  It may have the
> > entry like the following:
> >
> >       Node 0x14 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
> >         Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
> >         Amp-In vals:  [0x00 0x00] [0x00 0x00]
> >         Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
> >         Amp-Out vals:  [0x80 0x80]
> >         Pincap 0x083e: IN OUT HP Detect Trigger
> >         Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
> >           Conn = 1/8, Color = Black
> >           DefAssociation = 0xf, Sequence = 0x0
> >           Misc = NO_PRESENCE
> >         Pin-ctls: 0x20: IN
> >         Unsolicited: tag=00, enabled=0
> >         Connection: 2
> >            0x0c* 0x0d
> >
> > For this widget, we have a couple of things to do: fix the pin type,
> > adjust the amp and check the connection.  First, change the pin type
> > to the correct one, the output type.  Usually, it's either 0x40 or
> > 0xc0.  The latter type is with a headphone amplifier.  Let's take
> > 0xc0 as an example.  Call hda-verb like below (as root user):
> >
> >       # hda-verb /dev/snd/hwC0D0 0x14 SET_PIN_WID 0xc0
> >
> > Check /proc/asound/card0/codec#0 again whether the pin-ctls is changed
> > properly.  Similarly, unmute the output volume of this widget with
> > hda-verb.  For this, pass 0xb000 to SET_AMP verb:
> >
> >       # hda-verb /dev/snd/hwC0D0 0x14 SET_AMP 0xb000
> >
> > 0xb000 means to set the AMP-output to 0x00.  The mute bit is 0x80, so
> > 0x00 means to unmute and set the volume 0.  (The volume 0 doesn't
> > matter because this widget has no volume but only mute control.)
> >
> > In the example above, this pin is connected from the NID 0x0c, which
> > is a mixer amp.  That's fine and let's keep as is.
> > Check this widget 0x0c whether the first Amp-In vals is unmuted
> > (i.e. has *no* 0x80 bit mask).  The first element of 0x0c is connected
> > to the DAC, 0x02, directly.  If it's muted, call like below
> >
> >       # hda-verb /dev/snd/hwC0D0 0x0c SET_AMP 0x7000
> >
> > 0x7000 means to set the AMP-input of the first element (index 0) to
> > 0x00.  For the second element, it'd be 0x7100.
> >
> > OK, all set ready.  Try aplay and pray.  If this doesn't work, try
> > other ports as well until you find a gold mine.
> >
> > You could check the inputs similarly if anything doesn't work.
> > Once after you figure out all pin configurations, we can create a new
> > model (or fix the existing model) to adapt your device.
> >
> > Have fun,
> >
> >
> > Takashi
>
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