[SOLVED] MPD conflicting with other programs

goll72 · 2020-08-20 18:00:34

When I run MPD and start playing a song, other programs won't play sound anymore (YouTube videos don't load on Firefox, I can't hear anything in Discord calls, etc.). If another program is running and playing sound while I open MPD, then it won't play anything, sometimes it gives the error "MPD: Problems setting volume"

~/.config/mpd/mpd.conf:

music_directory		"~/Music"
playlist_directory		"~/.config/mpd/playlists"
db_file			"~/.config/mpd/db"
log_file			"syslog"
pid_file			"~/.config/mpd/pid"
user				"goll"

audio_output {
	type	"pulse"
	name	"mpd-pulse"
	mixer	"software"
	bind_to_address	"127.0.0.1"
}

audio_output {
    type                    "fifo"
    name                    "mpd-fifo"
    path                    "/tmp/mpd.fifo"
    format                  "44100:16:2"
}

~/.config/ncmpcpp/config:

ncmpcpp_directory = ~/.config/ncmpcpp

mpd_host = localhost

mpd_port = 6600

mpd_connection_timeout = 5

mpd_music_dir = ~/Music

mpd_crossfade_time = 5

visualizer_fifo_path = /tmp/mpd.fifo

visualizer_output_name = "mpd-fifo"

visualizer_in_stereo = yes

visualizer_sync_interval = 20

visualizer_type = wave

visualizer_look = ■●


playlist_disable_highlight_delay = 10

browser_sort_mode = noop

progressbar_look = ▬●

user_interface = alternative

media_library_albums_split_by_date = no

screen_switcher_mode = playlist, browser, visualizer, tag_editor
startup_screen = playlist

/etc/pulse/defaut.pa:

#!/usr/bin/pulseaudio -nF
#
# This file is part of PulseAudio.
#
# PulseAudio is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# PulseAudio is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.

# This startup script is used only if PulseAudio is started per-user
# (i.e. not in system mode)

.fail

### Automatically restore the volume of streams and devices
load-module module-device-restore
load-module module-stream-restore
load-module module-card-restore

### Automatically augment property information from .desktop files
### stored in /usr/share/application
load-module module-augment-properties

### Should be after module-*-restore but before module-*-detect
load-module module-switch-on-port-available

### Load audio drivers statically
### (it's probably better to not load these drivers manually, but instead
### use module-udev-detect -- see below -- for doing this automatically)
load-module module-alsa-sink
load-module module-alsa-source device=hw:2,1
#load-module module-oss device="/dev/dsp" sink_name=output source_name=input
#load-module module-oss-mmap device="/dev/dsp" sink_name=output source_name=input
#load-module module-null-sink
#load-module module-pipe-sink


### Automatically load driver modules depending on the hardware available
.ifexists module-udev-detect.so
load-module module-udev-detect
.else
### Use the static hardware detection module (for systems that lack udev support)
load-module module-detect
.endif

### Automatically connect sink and source if JACK server is present
.ifexists module-jackdbus-detect.so
.nofail
load-module module-jackdbus-detect channels=2
.fail
.endif

### Automatically load driver modules for Bluetooth hardware
.ifexists module-bluetooth-policy.so
load-module module-bluetooth-policy
.endif

.ifexists module-bluetooth-discover.so
load-module module-bluetooth-discover
.endif

### Load several protocols
load-module module-dbus-protocol
.ifexists module-esound-protocol-unix.so
load-module module-esound-protocol-unix
.endif
load-module module-native-protocol-unix

### Network access (may be configured with paprefs, so leave this commented
### here if you plan to use paprefs)
#load-module module-esound-protocol-tcp
#load-module module-native-protocol-tcp
#load-module module-zeroconf-publish
load-module module-native-protocol-tcp auth-ip-acl=127.0.0.1

### Load the RTP receiver module (also configured via paprefs, see above)
#load-module module-rtp-recv

### Load the RTP sender module (also configured via paprefs, see above)
#load-module module-null-sink sink_name=rtp format=s16be channels=2 rate=44100 sink_properties="device.description='RTP Multicast Sink'"
#load-module module-rtp-send source=rtp.monitor

### Load additional modules from GSettings. This can be configured with the paprefs tool.
### Please keep in mind that the modules configured by paprefs might conflict with manually
### loaded modules.
.ifexists module-gsettings.so
.nofail
load-module module-gsettings
.fail
.endif


### Automatically restore the default sink/source when changed by the user
### during runtime
### NOTE: This should be loaded as early as possible so that subsequent modules
### that look up the default sink/source get the right value
load-module module-default-device-restore

### Automatically move streams to the default sink if the sink they are
### connected to dies, similar for sources
load-module module-rescue-streams

### Make sure we always have a sink around, even if it is a null sink.
load-module module-always-sink

### Honour intended role device property
load-module module-intended-roles

### Automatically suspend sinks/sources that become idle for too long
load-module module-suspend-on-idle

### If autoexit on idle is enabled we want to make sure we only quit
### when no local session needs us anymore.
.ifexists module-console-kit.so
load-module module-console-kit
.endif
.ifexists module-systemd-login.so
load-module module-systemd-login
.endif

### Enable positioned event sounds
load-module module-position-event-sounds

### Cork music/video streams when a phone stream is active
load-module module-role-cork

### Modules to allow autoloading of filters (such as echo cancellation)
### on demand. module-filter-heuristics tries to determine what filters
### make sense, and module-filter-apply does the heavy-lifting of
### loading modules and rerouting streams.
load-module module-filter-heuristics
load-module module-filter-apply

### Make some devices default
set-default-sink 0
#set-default-source input

Last edited by goll72 (2020-08-21 22:27:41)

Slithery · 2020-08-20 18:37:20

Are you using the system or user systemd service?

d_fajardo · 2020-08-20 19:47:00

audio_output {
	type	"pulse"
	name	"mpd-pulse"
	mixer	"software"
	bind_to_address	"127.0.0.1"
}

Your using pulse as your mpd output. If mpd occupies pulse, then the other apps wanting to use pulse will not be able to function while mpd is running.
See if you can setup mpd to output directly from ALSA. Alternatively as in my system, mpd with JACK Audio.

Last edited by d_fajardo (2020-08-20 19:48:14)

jasonwryan · 2020-08-20 19:55:16

d_fajardo wrote:

Your using pulse as your mpd output. If mpd occupies pulse, then the other apps wanting to use pulse will not be able to function while mpd is running.

Nope. This is exactly what PA is supposed to do: handle multiple streams.

d_fajardo · 2020-08-21 05:46:23

Nope. This is exactly what PA is supposed to do: handle multiple streams.

So I had it wrong all along?! Sorry about that.

goll72 · 2020-08-21 21:35:44

I think the service is being run as a user.
I enabled the mpd.socket so that mpd would start automatically when a program such as ncmpcpp tries to connect.
/usr/lib/systemd/user/mpd.service:

[Unit]
Description=Music Player Daemon
Documentation=man:mpd(1) man:mpd.conf(5)
After=network.target sound.target

[Service]
Type=notify
ExecStart=/usr/bin/mpd --no-daemon

# Enable this setting to ask systemd to watch over MPD, see
# systemd.service(5).  This is disabled by default because it causes
# periodic wakeups which are unnecessary if MPD is not playing.
#WatchdogSec=120

# allow MPD to use real-time priority 50
LimitRTPRIO=50
LimitRTTIME=infinity

# disallow writing to /usr, /bin, /sbin, ...
ProtectSystem=yes

# more paranoid security settings
NoNewPrivileges=yes
ProtectKernelTunables=yes
ProtectControlGroups=yes
# AF_NETLINK is required by libsmbclient, or it will exit() .. *sigh*
RestrictAddressFamilies=AF_INET AF_INET6 AF_UNIX AF_NETLINK
RestrictNamespaces=yes

# Note that "ProtectKernelModules=yes" is missing in the user unit
# because systemd 232 is unable to reduce its own capabilities
# ("Failed at step CAPABILITIES spawning /usr/bin/mpd: Operation not
# permitted")

[Install]
WantedBy=default.target

Last edited by goll72 (2020-08-21 21:36:52)

loqs · 2020-08-21 21:39:55

Check the status of the mpd.service with and without the --user option. Without the option will show the status for the system service.

goll72 · 2020-08-21 22:11:50

It is running as system. Running "systemctl status mpd.service --user" returns "Failed to connect to bus: No such file or directory", and running it without the --user option returns that the service is active and running. How do I make MPD run as user? I tried killing MPD, disabling mpd.socket and enabling it again with the --user option, but it also returns "Failed to connect to bus: No such file or directory".

Last edited by goll72 (2020-08-21 22:13:36)

loqs · 2020-08-21 22:18:51

Is the session broken?

goll72 · 2020-08-21 22:27:20

My session is not broken.
I rebooted my PC and tried to enable the mpd.socket again with the --user option, and now it works. Thanks!

Last edited by goll72 (2020-08-21 22:28:44)

Arch Linux

#1 2020-08-20 18:00:34

[SOLVED] MPD conflicting with other programs

#2 2020-08-20 18:37:20

Re: [SOLVED] MPD conflicting with other programs

#3 2020-08-20 19:47:00

Re: [SOLVED] MPD conflicting with other programs

#4 2020-08-20 19:55:16

Re: [SOLVED] MPD conflicting with other programs

#5 2020-08-21 05:46:23

Re: [SOLVED] MPD conflicting with other programs

#6 2020-08-21 21:35:44

Re: [SOLVED] MPD conflicting with other programs

#7 2020-08-21 21:39:55

Re: [SOLVED] MPD conflicting with other programs

#8 2020-08-21 22:11:50

Re: [SOLVED] MPD conflicting with other programs

#9 2020-08-21 22:18:51

Re: [SOLVED] MPD conflicting with other programs

#10 2020-08-21 22:27:20

Re: [SOLVED] MPD conflicting with other programs

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