There is the same behavior on this one (Rpi3 with Hifiberry clone Dac)
Note: When the plugin is active on one player I got alot of Running wheels when I switch between players and dialogues
volumio@sk5-altan:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
Subdevices: 8/8
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
Subdevice #4: subdevice #4
Subdevice #5: subdevice #5
Subdevice #6: subdevice #6
Subdevice #7: subdevice #7
card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 ALSA [bcm2835 IEC958/HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: sndrpihifiberry [snd_rpi_hifiberry_dacplus], device 0: HiFiBerry DAC+ HiFi pcm512x-hifi-0 []
Subdevices: 0/1
Subdevice #0: subdevice #0
card 7: Loopback [Loopback], device 0: Loopback PCM [Loopback PCM]
Subdevices: 2/2
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
card 7: Loopback [Loopback], device 1: Loopback PCM [Loopback PCM]
Subdevices: 2/2
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
volumio@sk5-altan:~$ ps -axl |grep alsaloop
0 1000 2384 2197 20 0 1820 376 wait S ? 0:00 /bin/sh -c /usr/bin/alsaloop -C plughw:Loopback,1 -P plug:plugequal -t 80000 -w 500
4 1000 2385 2384 20 0 7292 3292 poll_s S ? 0:00 /usr/bin/alsaloop -C plughw:Loopback,1 -P plug:plugequal -t 80000 -w 500
0 1000 2502 2496 20 0 2588 524 pipe_w S+ pts/0 0:00 grep alsaloop
[code]# Volumio MPD Configuration File
Files and directories
music_directory “/var/lib/mpd/music”
playlist_directory “/var/lib/mpd/playlists”
db_file “/var/lib/mpd/tag_cache”
#log_file “/var/log/mpd/mpd.log”
#pid_file “/var/run/mpd/pid”
#state_file “/var/lib/mpd/state”
#sticker_file “/var/lib/mpd/sticker.sql”
###############################################################################
General music daemon options
user “mpd”
group “audio”
bind_to_address “any”
#port “6600”
#log_level “default”
gapless_mp3_playback “no”
#save_absolute_paths_in_playlists “no”
#metadata_to_use “artist,album,title,track,name,genre,date,composer,performer,disc”
auto_update “yes”
#auto_update_depth “3”
###############################################################################
Symbolic link behavior
follow_outside_symlinks “yes”
follow_inside_symlinks “yes”
###############################################################################
Input
input {
plugin “curl”
proxy “proxy.isp.com:8080”
proxy_user “user”
proxy_password “password”
}
###############################################################################
Decoder
###############################################################################
Audio Output
resampler {
plugin “soxr”
quality “high”
threads “0”
}
audio_output {
type “alsa”
name “alsa”
device “hw:Loopback,0”
dop “yes”
}
audio_output {
type “fifo”
enabled “no”
name “multiroom”
path “/tmp/snapfifo”
format “44100:16:2”
}
#replaygain “album”
#replaygain_preamp “0”
volume_normalization “no”
###############################################################################
MPD Internal Buffering
audio_buffer_size “8192”
buffer_before_play “10%”
###############################################################################
Resource Limitations
#connection_timeout “60”
max_connections “20”
max_playlist_length “32384”
max_command_list_size “8192”
max_output_buffer_size “16384”
###############################################################################
Character Encoding
filesystem_charset “UTF-8”
id3v1_encoding “UTF-8”
###############################################################################
[/code]
pcm.!default {
type plug
slave.pcm plugequal;
}
ctl.equal {
type equal;
}
pcm.plugequal {
type equal;
slave.pcm "plughw:1,0";
}
pcm.equal {
type plug;
slave.pcm plugequal;
}
