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jcorporation / myMPDos

A music player image for Raspberry Pi based on Alpine Linux, MPD and myMPD.
https://jcorporation.github.io/myMPDos/
GNU General Public License v3.0
29 stars 6 forks source link

Wrong mixer_control #3

Closed bbodinier closed 3 years ago

bbodinier commented 3 years ago

Hi, I have a Khadas tone board, and /etc/mpd.conf, in audio_output section, mixer_control is wrong :

audio_output {
  name          "Control USB Audio"
  device        "hw:0,0"
  type          "alsa"
  auto_resample "no"
  auto_format   "no"
  mixer_type    "hardware"
  mixer_device  "hw:0"
  mixer_control "Khadas"
}

#amixer

Simple mixer control 'Khadas Tone Control ',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 127
  Mono:
  Front Left: Playback 107 [84%] [-20.00dB] [on]
  Front Right: Playback 107 [84%] [-20.00dB] [on]
Simple mixer control 'Khadas Tone Control ',1
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 127
  Mono: Playback 127 [100%] [0.00dB] [on]

I tried to change mixer_control to the correct value (mixer_control "Khadas Tone Control "), but after a reboot, mixer_control always reverts to the wrong value. I checked /media/mmcblk0p2/mpd.apkovl.tar.gz, /etc/mpd.conf file is correct after doing:

vi /etc/mpd.conf (edit with correct value)
rwdata.sh
lbu include /etc/mpd.conf
lbu commit -d

/etc/mpd.conf always reverts to the wrong value. Thanks

jcorporation commented 3 years ago

MPD output autoconfiguration is the problem. I must look in the code, but commenting the line with configmpd.sh in /etc/mdev.conf should prevent the overwrite on each reboot.

bbodinier commented 3 years ago

Commenting the line with configmpd.sh in /etc/mdev.conf does not work (alsa failed). I found another solution : change ENABLE_MIXER to false in /etc/mympdos/mympdos.conf and place the good mpd.conf in /etc/mympdos/custom/

bbodinier commented 3 years ago

I agree, autoconfiguration is a problem, it slows down the boot a lot. If it was an option in bootstrap.txt I would leave it set to false because I don't want a script to modify my mpd.conf file.

jcorporation commented 3 years ago

You can set ENABLE_CONFIGMPD="false" in the bootstrap.txt to disable the autoconfiguration of MPD.

Further above is my error, you should only comment out the last column with configmpd.sh not the complete line.

jcorporation commented 3 years ago

I looked at the configmpd.sh script. The problem is the handling of spaces in the mixer name. I build a new mympdos-base-0.4.1 package with the bugfix.

jcorporation commented 3 years ago

mympdos-base-0.4.1 is now online.