[Voyage-linux] Raspberry 2B and HiFi-Berry DAC+ -- Keyborad & Volume Problems after re-install

[Stefan U. Hegner]

Hey Punky,

thanks for your quick reply.

Am 06.07.2015 um 03:51 schrieb Kim-man 'Punky' TSE:
> mixer_control in /etc/mpd should be set to "Digital".  You should use
> "amixer scontrols" to check:

I tried the mixer_control "Digital" before. - But probably with other
conflicting settings. Now I got the following in my/etc/mpd.conf, and
this works:

    audio_output {
            type            "alsa"
            name            "HiFi-Berry DAC+"
            device          "hw:0,0"
            priority        "FIFO:32"
            mixer_control   "Digital"
    }

However, it seems that the alsa driver for the DAC+ has changed, as the
controls are now somewhat different. - I got (now) the same scontrols as
you have:
> root at voyage-mubox:~# amixer scontrols
> Simple mixer control 'DSP Program',0
> Simple mixer control 'Analogue',0
> Simple mixer control 'Analogue Playback Boost',0
> Simple mixer control 'Auto Mute',0
> Simple mixer control 'Auto Mute Mono',0
> Simple mixer control 'Auto Mute Time Left',0
> Simple mixer control 'Auto Mute Time Right',0
> Simple mixer control 'Clock Missing Period',0
> Simple mixer control 'Deemphasis',0
> Simple mixer control 'Digital',0
> Simple mixer control 'Volume Ramp Down Emergency Rate',0
> Simple mixer control 'Volume Ramp Down Emergency Step',0
> Simple mixer control 'Volume Ramp Down Rate',0
> Simple mixer control 'Volume Ramp Down Step',0
> Simple mixer control 'Volume Ramp Up Rate',0
> Simple mixer control 'Volume Ramp Up Step',0

But I'm not sure as to how to setup alsa optimal.

I got no clue as to the differences between the DSP Programs. And
althogh I'm using an analogue output, I have both "Analogue" and
"Analogue Playback Boost" unset, as the level of the output signal is
exremely high. I'm pretty sure it used to be lower. When I have
"Digital" at around 55% that's plenty of output level - And if I go
above I get a distorted signal. - Is this supposed to be this way? With
the "old" alsa-driver I got a clean signal at 100%. - Are there any
tweaks for this?

> For keyboard and bt speaker I really cannot help, I only have US
> keyboard and DAC+.
The above also helped me to resolve the Bluetooth speaker issue. Now I
got the following in my/etc/mpd.conf, and this works:

    audio_output {
            type            "alsa"
            name            "TempiTec BT-Speaker"
            device          "btspeaker_softvol"
            mixer_control   "BT Speaker"
    }

Regarding the Keyboard: It's not a nagging problem, as I usually only
access my 2B via ssh. But maybe there any other folks out there, who got
their national keyboard to work. - If so, please share, you made it work.

Thanks a lot for your assistance and have a nice day!

Greetings from Germany!

Stefan.

-- 
Stefan U. Hegner 
            <stefan at teleos-web.de>
              * * *
D-32584 Löhne --- good ole Germany

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