[solved] MPD error

tuhyk · 2010-12-19 08:52:38

Hi guys,

Yesterday my Arch linux installation froze from unknown reason and after hard reset, my MPD stopped working. To be specific, after boot I got below message:

[tuhyk@dell documents]$ mpd /home/tuhyk/.mpd/mpd.conf
daemon: cannot init supplementary groups of user "tuhyk": Operation not permitted

I was using MPD for 6 months without any glitch, it was set up using the alternative setup mentioned in wiki. It seems to work despite this error, but I am absolutely sure it was not there before the crash.

Any ideas?

Last edited by tuhyk (2010-12-22 17:04:38)

ga01f4733 · 2010-12-19 09:53:23

ahoi!

same problem here, but there's a new line in /etc/mpd.conf wich wasnt before relating to groups.
I'm using mpd --stderr and then I get connection, but the daemon is not working as before, also looking for a solution

I had checked permissions, and added mpd user to the audio group, and that did the trick, daemon is working again.

did you succeded?

Last edited by ga01f4733 (2010-12-19 11:08:26)

rjrjr · 2010-12-19 21:31:59

Same problem here. Something succeeds, because I can still play music through Ario, but I'd like a fix.

@ga01f4733, I think tuhyk and I are running mpd as a non-root user, as described in the MPD wiki. I don't have an mpd user at all.

I'm going to keep messing with some configs and see what I can find out.

UPDATE:

Hmmm, running mpd with 'sudo' seems to get rid of the problem, but I'm still not sure what the problem was. My mpd.conf looks exactly the same. It also seems odd that I need to run it with root privileges...

Last edited by rjrjr (2010-12-19 21:37:01)

SiD · 2010-12-19 23:23:52

I have no problems running mpd as user (starting mpd as root) with this mpd.conf (only the relevant parts all other lines are commented) and user "michael" in the audio group.

music_directory        "~/musik/"
playlist_directory "        ~/.mpd/playlists"
db_file "                ~/.mpd/mpd.db"
log_file "                ~/.mpd/mpd.log"
pid_file "                ~/.mpd/mpd.pid"
state_file "            ~/.mpd/mpdstate"
sticker_file            "~/.mpd/sticker.sql"

user "michael"

#group                "nogroup"

bind_to_address        "127.0.0.1"

input {
        plugin "curl"
#       proxy "proxy.isp.com:8080"
#       proxy_user "user"
#       proxy_password "password"
}

audio_output {
    type        "alsa"
    name        "My ALSA Device"
##    device        "hw:0,0"    # optional
##    format        "44100:16:2"    # optional
##    mixer_type      "hardware"    # optional
##    mixer_device    "default"    # optional
    mixer_control    "Master"    # optional
##    mixer_index    "0"        # optional
}

Last edited by SiD (2010-12-20 11:06:22)

rjrjr · 2010-12-20 03:19:13

Hmmm, thats odd, your setup looks just like mine:

music_directory       "/home/roger/music"         # Your music dir.
playlist_directory    "~/.mpd/playlists"
db_file               "~/.mpd/mpd.db"
log_file              "~/.mpd/mpd.log"
pid_file              "~/.mpd/mpd.pid"
state_file            "~/.mpd/mpdstate"
user                  "roger"
audio_output { 
         type                    "alsa"
         name                    "My ALSA Device"
         device                  "hw:0,0"     # optional
         format                  "44100:16:2" # optional
}

# Binding to address and port causing problems in mpd-0.14.2 best to leave
# commented.
# bind_to_address       "127.0.0.1"
#port

Last edited by rjrjr (2010-12-20 03:21:31)

ga01f4733 · 2010-12-20 09:10:07

rjrjr what do you get at mpd --stderr or mpd --verbose?, is it pid issue?

it looks like a permission mixup to me

toffyrn · 2010-12-20 10:29:54

if you are running mpd as your user, you should comment or remove the "user line" from mpdconf.
That line should only be needed when starting as root/sudo

Edit: And btw.
If you move the configfile to ~/.mpdconf you could simply run "mpd" and it automagically uses that config...

Last edited by toffyrn (2010-12-20 10:32:26)

tuhyk · 2010-12-20 17:25:27

My output

[tuhyk@dell documents]$ mpd /home/tuhyk/.mpd/mpd.conf --verbose
config: loading file /home/tuhyk/.mpd/mpd.conf
daemon: cannot init supplementary groups of user "tuhyk": Operation not permitted
path: path_set_fs_charset: fs charset is: UTF-8
database: reading DB
disabling the last.fm playlist plugin because account is not configured
daemon: opening pid file
daemon: daemonized!
daemon: writing pid file

EDIT: Got it! After reading the config file carefully I commented the user line as toffyrn suggested and it seems to work:

[tuhyk@dell documents]$ mpd /home/tuhyk/.mpd/mpd.conf --verbose
config: loading file /home/tuhyk/.mpd/mpd.conf
path: path_set_fs_charset: fs charset is: UTF-8
database: reading DB
disabling the last.fm playlist plugin because account is not configured
daemon: opening pid file
daemon: daemonized!
daemon: writing pid file

rjrjr · 2010-12-21 18:13:35

Great! Worked for me too. I wonder if this will fix the errors that I had when I tried to get mpd to autostart via .xinitrc.

Rasi · 2010-12-21 23:33:09

please mark this as solved.

Also this behavior has always been the same. Starting mpd as user, you cannot explicitly set a user in config file. Think about it, it makes total sense

tuhyk · 2010-12-22 17:06:12

Ok, done.

Arch Linux

#1 2010-12-19 08:52:38

[solved] MPD error

#2 2010-12-19 09:53:23

Re: [solved] MPD error

#3 2010-12-19 21:31:59

Re: [solved] MPD error

#4 2010-12-19 23:23:52

Re: [solved] MPD error

#5 2010-12-20 03:19:13

Re: [solved] MPD error

#6 2010-12-20 09:10:07

Re: [solved] MPD error

#7 2010-12-20 10:29:54

Re: [solved] MPD error

#8 2010-12-20 17:25:27

Re: [solved] MPD error

#9 2010-12-21 18:13:35

Re: [solved] MPD error

#10 2010-12-21 23:33:09

Re: [solved] MPD error

#11 2010-12-22 17:06:12

Re: [solved] MPD error

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