[solved] Cantata-qt can't connect to mpd. Weird problem...

SleepyFloyd · 2013-12-26 09:08:14

I got a weird issue with Cantata-qt. It happens with the new update (1.2.1-1) and the previous version... not sure about earlier stuff, as I only switched back to Arch two weeks ago.

Cantata says it can't connect to mpd (which is running on 192.168.1.123:6600 in my case) but it displays the correct information of the currently playing song, albumcover and, when I click on information, the Wikipedia stuff and the lyrics. Everything else (controls, library, playlist, ...) doesn't work.

Now, I'm 100% sure that mpd is running at that address and working. Sonata, gmpc, ncmpcpp are all doing what they should. Cantata obviously finds "something", as it correctly shows the now playing track. If I keep hitting "connect", the time is updated, so it looks like it gets the current state when attempting to connect to mpd, but doesn't finish the connection.

Is there a way to debug this? Any ideas?

Last edited by SleepyFloyd (2013-12-27 08:51:27)

Foucault · 2013-12-26 10:44:39

You can try to delete all local configuration of cantata (~/.config/cantata) and start from scratch.

I've uploaded the last 4 versions of cantata-qt as well. Try to see if any of these work. You can also build them yourself by adjusting the PKGBUILD
1.1.0-1
1.1.1-1
1.1.2-1
1.2.0-1

Last edited by Foucault (2013-12-26 10:47:05)

SleepyFloyd · 2013-12-26 11:38:22

Hmm... there was just one pretty innocent looking file in ~/.config/cantata. I deleted it anyway and created a new one:

[General]
version=1.2.1
httpAllocatedPort=58508
mainWindowSize=@Size(843 544)
splitterState=@ByteArray(\0\0\0\xff\0\0\0\0\0\0\0\x2\0\0\0\x80\0\0\x2\0\x1\0\0\0\x4\x1\0\0\0\x1)
page=LibraryPage
contextSplitterState=@ByteArray(\0\0\0\xff\0\0\0\0\0\0\0\x3\0\0\x1\0\0\0\x1\0\0\0\x1\0\0\0\0\0\x3\x1\0\0\0\x1)

[Connection]
host=192.168.1.123
port=6600
dir=/home/sleepy/music
passwd=
dynamizerPort=0
coverName=

[PreferencesDialog]
size=@Size(811 689)

I also enabled debug logging. (CANTATA_DEBUG=3 cantata)

 ------------START------------
2013-12-26 12:13:11 - MPDConnection 140095723128576 setDetails "192.168.1.123" 6600 false 
2013-12-26 12:13:11 - MPDConnection 140095723128576 disconnectFromMPD 
2013-12-26 12:13:11 - MPDConnection 140095723128576 call connectToMPD 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Connecting (std) 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 established 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Waiting for read data. 0 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Read: "OK MPD 0.18.0
" 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Received identification string 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2d0 Connecting (idle) 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2d0 established 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2d0 Waiting for read data. 0 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2d0 Read: "OK MPD 0.18.0
" 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2d0 Received identification string 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2d0 Enabling idle 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 sendCommand: "status" true true 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Waiting for read data. 0 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Read: "volume: 30
repeat: 1
random: 0
single: 0
consume: 0
playlist: 100
playlistlength: 97
mixrampdb: 0.000000
state: play
xfade: 5
song: 79
songid: 630
time: 100:273
elapsed: 99.544
bitrate: 192
audio: 44100:24:2
nextsong: 80
nextsongid: 631
OK
" 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 sendCommand - sent 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 sendCommand: "stats" true true 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Waiting for read data. 0 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Read: "uptime: 9558
playtime: 1864
artists: 7885
albums: 3284
songs: 48329
db_playtime: 16192575
db_update: 1387874544
OK
" 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 sendCommand - sent 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 sendCommand: "urlhandlers" true true 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Waiting for read data. 0 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Read: "handler: http://
handler: https://
handler: mms://
handler: mmsh://
handler: mmst://
handler: mmsu://
handler: gopher://
handler: rtp://
handler: rtsp://
handler: rtmp://
handler: rtmpt://
handler: rtmps://
OK
" 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 sendCommand - sent 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 sendCommand: "tagtypes" true true 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Waiting for read data. 0 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Read (bytes): 347 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 sendCommand - sent 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 sendCommand: "currentsong" true true 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Waiting for read data. 0 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Read (bytes): 653 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 sendCommand - sent 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 sendCommand: "listallinfo" true true 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Waiting for read data. 0 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Read: "" 
2013-12-26 12:13:11 - MPDConnection 140095723128576 "listallinfo" failed 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 sendCommand: "listallinfo" true false 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Connecting (std) 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 established 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Waiting for read data. 0 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Read: "OK MPD 0.18.0
" 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Received identification string 
2013-12-26 12:13:11 - MPDConnection 140095723128576 0x220c2b0 Waiting for read data. 0 
2013-12-26 12:13:12 - MPDConnection 140095723128576 0x220c2b0 Read: "" 
2013-12-26 12:13:12 - MPDConnection 140095723128576 "listallinfo" failed 
2013-12-26 12:13:12 - MPDConnection 140095723128576 disconnectFromMPD 
2013-12-26 12:13:12 - MPDConnection 140095723128576 0x220c2b0 sendCommand - sent 
2013-12-26 12:13:12 - MPDConnection 140095723128576 0x220c2b0 sendCommand: "listplaylists" true true 
2013-12-26 12:13:12 - MPDConnection 140095723128576 0x220c2b0 sendCommand: "playlistinfo" true true 
2013-12-26 12:13:12 - MPDConnection 140095723128576 0x220c2b0 sendCommand: "outputs" true true

Looks good to me... finds the whole library, everything seems ok, but then there's this "disconnectFromMPD" at the end and it still doesn't work.

I've also tried 1.1.0-1. The behaviour changes a bit, but same issue. Instead of displaying the song info the whole time, it just updates them quickly when I hit connect and then goes blank after ~0,5 sec.

Guess that's an upstream issue.

ssri · 2013-12-27 01:02:03

Here's the main problem:

SleepyFloyd wrote:

2013-12-26 12:13:12 - MPDConnection 140095723128576 "listallinfo" failed

There's not enough memory allocated for listallinfo to work. You can either trim your library (yeah right) or bump up the memory buffer size (see below). Anyways, I reported the higher memory requirements to catanta and mpd. mpd's dev chimed in later on the cantata bug tracker. Essentially, mpd 0.18.x has more features, thus requires more memory for "listallinfo".

Just change "max_output_buffer_size" in mpd.conf (or ~/.mpdconf) to a higher number.

Last edited by ssri (2013-12-27 22:39:43)

SleepyFloyd · 2013-12-27 08:51:03

Hey, thanks. That did it.

Value was 8192 at first, doubled it to 16384, which didn't change anything.
Then thought, well... whatever and changed it to 65536 and now Cantata works.

Arch Linux

#1 2013-12-26 09:08:14

[solved] Cantata-qt can't connect to mpd. Weird problem...

#2 2013-12-26 10:44:39

Re: [solved] Cantata-qt can't connect to mpd. Weird problem...

#3 2013-12-26 11:38:22

Re: [solved] Cantata-qt can't connect to mpd. Weird problem...

#4 2013-12-27 01:02:03

Re: [solved] Cantata-qt can't connect to mpd. Weird problem...

#5 2013-12-27 08:51:03

Re: [solved] Cantata-qt can't connect to mpd. Weird problem...

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