[SOLVED] mpd server_socket: bind to '0.0.0.0:6600' failed

Ahpt · 2022-09-29 17:30:57

I am trying to setup the Music Player Daemon to play all of my audio (including DSD). I have installed mpd, mpc, and the ncmpcpp packages.

I've followed through this Arch Forum on MPD to setup the daemon https://wiki.archlinux.org/title/Music_Player_Daemon

When I run the mpd command, I get no output of an error. When I enable it to start with systemd, I get an error. Also, running ncmpcpp, I am informed that the connection is refused. Here is the systemctl status of mpd.service

× mpd.service - Music Player Daemon
     Loaded: loaded (/usr/lib/systemd/system/mpd.service; enabled; preset: disabled)
    Drop-In: /usr/lib/systemd/system/mpd.service.d
             └─00-arch.conf
     Active: failed (Result: exit-code) since Thu 2022-09-29 11:18:51 MDT; 8s ago
TriggeredBy: × mpd.socket
       Docs: man:mpd(1)
             man:mpd.conf(5)
    Process: 32263 ExecStart=/usr/bin/mpd --systemd (code=exited, status=1/FAILURE)
   Main PID: 32263 (code=exited, status=1/FAILURE)
        CPU: 43ms

Sep 29 11:18:51 arhpt systemd[1]: Starting Music Player Daemon...
Sep 29 11:18:51 arhpt mpd[32263]: server_socket: bind to '0.0.0.0:6600' failed (continuing anyway, because binding to '[::]:6600' succeeded): Failed to bind socket: Address already in use
Sep 29 11:18:51 arhpt mpd[32263]: exception: Failed to access /var/lib/mpd/.local/share/mpd/playlists: No such file or directory
Sep 29 11:18:51 arhpt mpd[32263]: decoder: Decoder plugin 'wildmidi' is unavailable: configuration file does not exist: /etc/timidity/timidity.cfg
Sep 29 11:18:51 arhpt mpd[32263]: exception: Failed to access /var/lib/mpd/Music: No such file or directory
Sep 29 11:18:51 arhpt mpd[32263]: exception: Failed to open '/var/lib/mpd/.local/share/mpd/database': No such file or directory
Sep 29 11:18:51 arhpt mpd[32263]: exception: Failed to open database plugin; On parent directory of db file; Failed to access /var/lib/mpd/.local/share/mpd: No such file or directory
Sep 29 11:18:51 arhpt systemd[1]: mpd.service: Main process exited, code=exited, status=1/FAILURE
Sep 29 11:18:51 arhpt systemd[1]: mpd.service: Failed with result 'exit-code'.
Sep 29 11:18:51 arhpt systemd[1]: Failed to start Music Player Daemon.

/etc/services shows the following service bound to port 6600, which is what mpd uses.

mshvlm           6600/tcp

and

lsof -i TCP:6600

produces no output.

A basic search shows that mshvlm is Microsoft Hyper-V Live Migration. I also noticed that the journalctl output shows that the service is attempting to access the /var. My MPD config file states that this should be placed in ~/.local/share/mpd/

Here is my /etc/mpd.conf

# Location for database
db_file                 "~/.local/share/mpd/database"

# Logs to system journal
log_file                "syslog"

# The music directory is by default the XDG directory, uncomment to amend and choose a different directory
music_directory         "~/Music"

# Uncomment to enable the functionalities
playlist_directory      "~/.local/share/mpd/playlists"
#pid_file               "~/.local/share/mpd/pid"
state_file              "~/.local/share/mpd/state"
sticker_file            "~/.local/share/mpd/sticker.sql"

# Uncomment to refresh the database whenever files in the music_directory are changed
auto_update             "yes"
auto_update_depth       "0"

restore_paused          "yes"

#port                   ""

audio_output {
        type            "alsa"
        name            "DSD Output"
}

I can set the port to something different, but I'm unsure why I need to, where it doesn't appear the port is in use. On a side note, I'm certain this broke obs-studio. Any help would be much appreciated! Thank you.

Last edited by Ahpt (2022-10-04 04:09:36)

V1del · 2022-09-29 17:36:02

For using mpd within your normal home dir you should be using the user, rather than the system wide service: https://wiki.archlinux.org/title/Music_ … th_systemd which is checked and invoked with

systemctl --user start/status/enable mpd

ran from and with your normal user's rights.

Last edited by V1del (2022-09-29 17:37:07)

Ahpt · 2022-09-30 00:40:24

I copied my config file from /etc/mpd.conf to ~/.config/mpd/mpd.conf

I also set the port to 6599 which is unused on my system, as port 6600 is already mapped to mshvlm.

when running the systemctl with the --user flag, I still receive an error.

× mpd.service - Music Player Daemon
     Loaded: loaded (/usr/lib/systemd/user/mpd.service; enabled; preset: enabled)
     Active: failed (Result: exit-code) since Thu 2022-09-29 18:35:57 MDT; 6s ago
       Docs: man:mpd(1)
             man:mpd.conf(5)
    Process: 8215 ExecStart=/usr/bin/mpd --systemd (code=exited, status=1/FAILURE)
   Main PID: 8215 (code=exited, status=1/FAILURE)
        CPU: 33ms

Sep 29 18:35:57 arhpt systemd[955]: Starting Music Player Daemon...
Sep 29 18:35:57 arhpt mpd[8215]: server_socket: bind to '0.0.0.0:6599' failed (continuing anyway, because binding to '[::]:6599' succeeded): Failed to bind socket: Address already in use
Sep 29 18:35:57 arhpt mpd[8215]: decoder: Decoder plugin 'wildmidi' is unavailable: configuration file does not exist: /etc/timidity/timidity.cfg
Sep 29 18:35:57 arhpt mpd[8215]: exception: Failed to read from /home/ahpt/.local/share/mpd/database: Is a directory
Sep 29 18:35:57 arhpt mpd[8215]: exception: Failed to open database plugin; db file "/home/ahpt/.local/share/mpd/database" is not a regular file
Sep 29 18:35:57 arhpt systemd[955]: mpd.service: Main process exited, code=exited, status=1/FAILURE
Sep 29 18:35:57 arhpt systemd[955]: mpd.service: Failed with result 'exit-code'.
Sep 29 18:35:57 arhpt systemd[955]: Failed to start Music Player Daemon.

I've created the folder structure, as when I initially installed it, the conf files were for the system-wide configuration (I'm not sure how to really specify mpd to be user, other than manually moving the conf and setting the user parameter when doing systemctl.) A trip to: https://wiki.archlinux.org/title/Music_ … leshooting doesn't seem to provide any scenario on this.

dakota · 2022-09-30 01:33:36

I'd start here...

Sep 29 18:35:57 arhpt mpd[8215]: exception: Failed to read from /home/ahpt/.local/share/mpd/database: Is a directory
Sep 29 18:35:57 arhpt mpd[8215]: exception: Failed to open database plugin; db file "/home/ahpt/.local/share/mpd/database" is not a regular file

Last edited by dakota (2022-09-30 01:36:40)

Ahpt · 2022-09-30 14:38:47

I accidentally copied over a previous output. I fixed that issue, but I am still receiving trouble actually connecting to mpd. I am showing that mpd is *active (running)* but, I still receive the server_socket error, and a decoder plugin issue.

● mpd.service - Music Player Daemon
     Loaded: loaded (/usr/lib/systemd/user/mpd.service; enabled; preset: enabled)
     Active: active (running) since Fri 2022-09-30 08:07:49 MDT; 4min 1s ago
       Docs: man:mpd(1)
             man:mpd.conf(5)
   Main PID: 11138 (mpd)
      Tasks: 3 (limit: 38383)
     Memory: 8.8M
        CPU: 34ms
     CGroup: /user.slice/user-1000.slice/user@1000.service/app.slice/mpd.service
             └─11138 /usr/bin/mpd --systemd

Sep 30 08:07:49 arhpt systemd[1201]: Starting Music Player Daemon...
Sep 30 08:07:49 arhpt mpd[11138]: server_socket: bind to '0.0.0.0:6599' failed (continuing anyway, because binding to '[::]:6599' succeeded): Failed to bind socket: Address already in use
Sep 30 08:07:49 arhpt mpd[11138]: decoder: Decoder plugin 'wildmidi' is unavailable: configuration file does not exist: /etc/timidity/timidity.cfg
Sep 30 08:07:49 arhpt systemd[1201]: Started Music Player Daemon.

My only issue is then I must change the ncmpcpp and mpc config. I was able to make a config file and set the port for ncmpcpp, but there isn't much documentation I found on how I could update the port for mpc. https://www.musicpd.org/clients/mpc/

I keep going back to mshvlm. When I find the port, it is listed as taken.

cat /etc/services &| less
...
mshvlm           6600/tcp
...

But checking this port shows that nothing is running.

❯ lsof -i TCP:6600

~

Is there a way to remove this from the listed port number? I hate to change all my configs and run separate settings when nothing is running here anyways, but is listed as used. Thanks!

V1del · 2022-09-30 14:53:28

Remove the TCP from the lsof command, I doubt whatever is on there is explicitly exposes TCP. Do you have another console started MPD already running? Do you have both the system wide and the --user daemon enabled now (you'd want only the latter)?

Last edited by V1del (2022-09-30 14:55:18)

seth · 2022-09-30 15:28:42

Post the otput of

ss -lenp | grep -E '(mpd|6600)'

The IPv6/IPv4 collison is "normal", https://wiki.archlinux.org/title/Music_ … efore_IPV4
Also

bind_to_address "/tmp/.mpd.socket"

and referencing the socket in your ncmpcpp config will allow ncmpcpp to add/play local files from your drive w/o having to add them to the database.

Ahpt · 2022-10-02 07:43:52

❯ lsof -i :6600

~

I disabled the system wide daemon disabled and stopped, my --user daemon is the only active now. I was able to bind the bind_to_address to 127.0.0.1 and now I'm able to connect ncmpcpp and the songs import and play with no issues.

ss -lenp | grep -E '(mpd|6600)'
tcp   LISTEN 0      5                                               127.0.0.1:6600             0.0.0.0:*    users:(("mpd",pid=1313399,fd=9)) uid:1000 ino:44576516 sk:1022 cgroup:/user.slice/user-1000.slice/user@1000.service/app.slice/mpd.service <->

~

My only issue now is that I can't change the volume inside ncmpcpp, or even with mpc.

mpc volume 10
MPD error: Failed to set mixer for 'ALSA sound card'; no such mixer control: software

and also

mpc volume 10
MPD error: Failed to set mixer for 'ALSA sound card'; no such mixer control: PCM

mixer_control "software" was used to fix the same issue for this forum entry. https://bbs.archlinux.org/viewtopic.php?id=88570

I also checked the Troubleshooting section but I don't see this listed. Any more help on this would be appreciated!

seth · 2022-10-02 12:55:32

audio_output {
        type            "alsa"
        name            "DSD Output"
}

You explicitly selected alsa - do you use pulseaudio or pipewire?

mixer_control "software" was used

Please post an updated config file and the output of

amixer
aplay -L
pactl list

Ahpt · 2022-10-04 04:09:19

Thanks seth! It was my config. As you stated, I had set alsa, but I use pulseaudio currently.

Updated my config to

audio_output {
        type            "pulse"
        name            "ALSA/PulseAudio"
}

Everything works as intended. Thank you for all of the help, and I will mark this as solved.

Arch Linux

#1 2022-09-29 17:30:57

[SOLVED] mpd server_socket: bind to '0.0.0.0:6600' failed

#2 2022-09-29 17:36:02

Re: [SOLVED] mpd server_socket: bind to '0.0.0.0:6600' failed

#3 2022-09-30 00:40:24

Re: [SOLVED] mpd server_socket: bind to '0.0.0.0:6600' failed

#4 2022-09-30 01:33:36

Re: [SOLVED] mpd server_socket: bind to '0.0.0.0:6600' failed

#5 2022-09-30 14:38:47

Re: [SOLVED] mpd server_socket: bind to '0.0.0.0:6600' failed

#6 2022-09-30 14:53:28

Re: [SOLVED] mpd server_socket: bind to '0.0.0.0:6600' failed

#7 2022-09-30 15:28:42

Re: [SOLVED] mpd server_socket: bind to '0.0.0.0:6600' failed

#8 2022-10-02 07:43:52

Re: [SOLVED] mpd server_socket: bind to '0.0.0.0:6600' failed

#9 2022-10-02 12:55:32

Re: [SOLVED] mpd server_socket: bind to '0.0.0.0:6600' failed

#10 2022-10-04 04:09:19

Re: [SOLVED] mpd server_socket: bind to '0.0.0.0:6600' failed

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