[pulseaudio-discuss] Sound input problem on chtrt5645 device

[Gustavo Duarte]

Hi Hans,

>I assume that when you say there is no input sound, you mean that the
> microphone build into the laptop is not working ?

That's right.

I tried your suggestions, substitute HiFi.conf file and add these
kernel command line parameters. And the mic, still desn't works.
I tried also dmic on 1st and 2nd input.

There is something that catches my attention.
Always after did a change, I go to Gnome sound settings, input tab,
and the only device showed is chtrt5645 Analog Stereo.
I expected see a digital device... i don't know.

Are there something more to do ?

Thanks in advance.

Gustavo

On Fri, Jun 29, 2018 at 11:00 AM Hans de Goede <hdegoede at redhat.com> wrote:
>
> Hi,
>
> On 28-06-18 12:59, Tanu Kaskinen wrote:
> > On Wed, 2018-06-27 at 10:10 -0300, Gustavo Duarte wrote:
> >> On Fri, 2018-06-15 at 12:56 -0300, Gustavo Duarte wrote:
> >>> * Hi all,
> >> *> >* The input sound isn't working. No sound is detected.
> >> *> >* Environment:
> >> *> >* Laptop brand: JP Couto model EF20EA
> >> *> >* Distributor ID: Ubuntu
> >> *>* Description: Ubuntu 16.04.4 LTS
> >> *>* Release: 16.04
> >> *>* Codename: xenial
> >> *> >* Linux Kernel: 4.15.0-23-generic
> >> *> >* Right after install Ubuntu 16.04 on the laptop, the sound output and input
> >> *>* isn't worked.
> >> *> >* So i followed this procedure:
> >> *>* https://ubuntuforums.org/showthread.php?t=2374383&p=13698722#post13698722
> >> <https://ubuntuforums.org/showthread.php?t=2374383&p=13698722#post13698722>
> >> *>* and then, output sound starting to work, but input not.
> >> *> >* An strange thing is that output of amixer -cO is empty.
> >> *
> >> On your machine card 0 is HDMI, which is why amixer -c0 is empty.
> >> amixer -c1 will show the chtrt5645 mixer settings.
> >>
> >> There have been input related fixes to chtrt5645's UCM config recently.
> >> This is the latest
> >> version:http://git.alsa-project.org/?p=alsa-lib.git;a=blob_plain;f=src/conf/ucm/chtrt5645/HiFi.conf;hb=HEAD
> >>
> >> Try copying that to /usr/share/alsa/ucm/chtrt5645/HiFi.conf
> >>
> >> --
> >> Tanu
> >>
> >>
> >> I tried this fix, after substitute HiFI.conf file and reboot the laptop,
> >> sound configuration options changed, output sound still working, but input
> >> NOT.
> >>
> >> Something else to do ?
> >>
> >> Thanks.
> >
> > Apparently your laptop requires some special configuration for the mic
> > to work. There are a couple of different rt5645 UCM configurations
> > already in alsa-lib:
> > http://git.alsa-project.org/?p=alsa-lib.git;a=tree;f=src/conf/ucm;hb=HEAD
> >
> > You can try playing with "alsamixer -c1" to find out what settings need
> > to be changed. If you manage to find a working settings, then the UCM
> > configuration can be fixed.
> >
> > I'll add Hans de Goede to Cc in case he has any hints or is otherwise
> > interested (he has fixed input for some other laptops that use rt5645).
>
> I assume that when you say there is no input sound, you mean that the
> microphone build into the laptop is not working ?
>
> It could be that your laptop is using a digital mic rather then an analog one.
>
> To try for a digital mic on the 1st dmic input, copy:
>
> git.alsa-project.org/?p=alsa-lib.git;a=blob_plain;f=src/conf/ucm/ASUSTeKCOMPUTERINC.-T100HAN-1.0-T100HAN/HiFi.conf
>
> To /usr/share/alsa/ucm/chtrt5645/HiFi.conf
>
> *AND* put snd_soc_rt5645.quirk=0x0100 on the kernel commandline.
>
> If that does not work you can also try:
>
> snd_soc_rt5645.quirk=0x0200
> snd_soc_rt5645.quirk=0x0300
> snd_soc_rt5645.quirk=0x0400
>
> There also is a second digital mic input, but there is no matching UCM file
> for that, so you would need to edit the ucm HiFi.conf file yourself, or
> play with alsamixer -c 1. To try and activate a dmic on the 2nd input try:
>
> snd_soc_rt5645.quirk=0x1000
> snd_soc_rt5645.quirk=0x2000
> snd_soc_rt5645.quirk=0x3000
>
> Regards,
>
> Hans
>
>
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