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 Forum index » Advanced Topics » Puppy Derivatives
mpdPup - Simplified MPD Music Server/Jukebox - v0.9.3
Moderators: Flash, JohnMurga
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michele_p

Joined: 03 Mar 2013
Posts: 4

PostPosted: Sun 03 Mar 2013, 18:26    Post subject:  

Idolse,

even if I unplug the device the 96khz play is not possible.
When switching from a 44 to a 96khz tune no sound to the speakers and display of W4S show “44khz”
As soon as I stop the play the “44khz” becomes “96khz” but still no sound.
Then if switching back to a 44khz tune, sound is heard but with a lot of distortion. W4S display keeps showing “96khz”.
If I stop the play the display changes to “44hz” and after pressing play again no more distortion is heard and sound is ok. In addition to this I have noted that I cannot play MP3 files (did I miss some setting with the player?)
The only way to have 96khz operation is to put the spare chip provided with the device but with this chip the mode of operation change from async to adaptive. In adaptive mode everything works well with no issues.

With a Slackopuppy distro the situation was different:
As soon as I switched to the 96khz tune I had distortion and wrong freq display.
Then I stop and play another 96khz tune with no changes but after stopping and changing the tune for another time the situation becomes ok (no distortion and freq ok).
What I have noted is the fact that the tune to be played must be changed. If I stop and play using always the same tune the situation does not change as if the player was in a "frozen" state from which is not able to recover.

What is your opinion ?
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ldolse

Joined: 23 Oct 2009
Posts: 366

PostPosted: Sun 03 Mar 2013, 21:05    Post subject:  

@michele_p, it sounds like a hardware/firmware issue to me with the audio_gd. The spec page claims it is supported, but I wouldn't put a lot of faith in the spec page. I found numerous Internet threads that indicate the chipset it uses does not properly implement USB Class II audio, and that it's broken on Linux. I saw one thread indicating that the 3.2 kernel should work, but upgrading to the latest kernel is low on my list of priorities at the moment. It actually sounds like you're lucky 44Khz is working based on some of the threads I saw.
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michele_p

Joined: 03 Mar 2013
Posts: 4

PostPosted: Mon 04 Mar 2013, 04:59    Post subject:  

Idolse,

I completely agree with you regarding the “reality” of what audiogd claims on his website.
No comment, instead, regarding their support for this kind of issue: almost zero

Anyway thanks for your reply and for the great job you have done with this distro.
Compared to Voyage mpd (I have tried it) you have given to us the chance to build a system with low efforts and little knowledge of Linux OS without affecting the sound capabilities that could be reached.

Going back to my issue of 96khz async play, you told me that you are quite satisfied of your set-up using the DI V3. Since you were able to play every sample rates I suppose you were in adaptive mode.
Is it so?

I would like to test this device with some distros that employ 3.2 kernel.
Could you give me some references ?

You did not tell me anything regarding the fact that I am not able to play MP3 files (FLAC and WAV 44khz instead are OK). Any suggestion ?

Thanks again for your kind support.
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ldolse

Joined: 23 Oct 2009
Posts: 366

PostPosted: Mon 04 Mar 2013, 05:55    Post subject:  

michele_p wrote:
I completely agree with you regarding the “reality” of what audiogd claims on his website.
No comment, instead, regarding their support for this kind of issue: almost zero

Anyway thanks for your reply and for the great job you have done with this distro.
Compared to Voyage mpd (I have tried it) you have given to us the chance to build a system with low efforts and little knowledge of Linux OS without affecting the sound capabilities that could be reached.

Going back to my issue of 96khz async play, you told me that you are quite satisfied of your set-up using the DI V3. Since you were able to play every sample rates I suppose you were in adaptive mode.
Is it so?

I would like to test this device with some distros that employ 3.2 kernel.
Could you give me some references ?

You did not tell me anything regarding the fact that I am not able to play MP3 files (FLAC and WAV 44khz instead are OK). Any suggestion ?

Thanks again for your kind support.
I have an Audiophilleo, not a DI V3. I mentioned my setup because there were some slight similarities between my system's behavior and yours, but mine is fine after unplugging/replugging the Audiophilleo, and only affects 176/192Khz. All verified bit perfect using Audiophilleo's test tracks.

The latest Ubuntu is on a 3.2+ kernel, it should be pretty straightforward to test - especially if you go with a GUI based app like Deadbeef.


I missed your query about mp3, sorry about that. I don't have any idea why they wouldn't be working - most of my library is AIFF, but I just double-checked mp3 and it's working fine for me. Maybe there is something about the encoding of your MP3's that MPD's plugins doesn't like. There are three mp3 compatible plugins compiled into MPD, mad, mpg123 and ffmpeg - you could try disabling mad and/or mpg123 in /etc/mpd.conf and see if one of the other plugins can decode your files.
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Supersurfer

Joined: 02 Mar 2013
Posts: 13

PostPosted: Mon 04 Mar 2013, 07:12    Post subject:  

Hi Idolse,

I am still not able to mount to my NAS. I have deleted the .2fs file, this brings up the graphic interface on ssh so I can configure the settings.

I use a synology DS411+II nas with DSM 4.1. I have probably not made the right setting on the NAS, I hope you can help me with this.
I have done this:
-made a user: alix
-gave alix read and write access to the music folder.
-the nas has two volumes
-in mpdpup I put in alix as user

See attached screendump for the settings.

What an I doing wrong?

Kind regards,
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ldolse

Joined: 23 Oct 2009
Posts: 366

PostPosted: Mon 04 Mar 2013, 20:38    Post subject:  

I suspect you're using the wrong information for the Share/Folder, but that's just a guess. Using a non-asciii password can also cause problems, but that looks fine in your screenshot.

The easiest way to see your shares is to look at the File Station application in the Synology web interface. I have one volume on my Synology, called 'DiskStation'. My Shares are under that volume, Music, Movies, etc. So my share name is 'Music', and I specify a subfolder under that - e.g. 'Library'.

Are you sure Volume2 is actually the name of your share? I'm not sure which Synology window you have open in the screenshot that says Volume2, but I'm pretty sure that's a partition and not a Share.
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Supersurfer

Joined: 02 Mar 2013
Posts: 13

PostPosted: Tue 05 Mar 2013, 16:01    Post subject:  

Hi Idolse,

Thanks! That did the trick, I did not need to fill in volume2.
It is playing now. I will compare it to the raspberry pi I also use; will be interesting.........

Next thing I encounter is that it will not play 24/192 files without hick-ups. It works fine with flac files up to 24/92. Is this some kind of buffer adjustment that must be made?

Kind regards,
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ldolse

Joined: 23 Oct 2009
Posts: 366

PostPosted: Tue 05 Mar 2013, 19:32    Post subject:  

Unplug and then replug your USB sound device from the system after the system is fully booted, this should resolve the issue. This only seems to happen with some users and certain sound devices, haven't been able to figure out the root cause.
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Jean-Louis P

Joined: 23 Sep 2012
Posts: 22

PostPosted: Wed 06 Mar 2013, 18:16    Post subject: RPi vs mpdpup  

Supersurfer wrote:
Hi Idolse,

Thanks! That did the trick, I did not need to fill in volume2.
It is playing now. I will compare it to the raspberry pi I also use; will be interesting.........
Kind regards,


Keep us posted on that supersurfer; we dream that some day, maybe, Idolse will have some time to go for cheap (ARM) platform, RPi, Beaglebone (new cheaper HW coming) so we may have a mpdpup in every single room in the house and stop giving all the money to Intel (Wink

Jean-Louis
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Supersurfer

Joined: 02 Mar 2013
Posts: 13

PostPosted: Thu 07 Mar 2013, 14:35    Post subject:  

@ Jean Louis:
I will certainly do that! The advantige of raspberry Pi is that it is very small and inexpensive. Only problem is that there are issues with the usb/ethernet bus. Because USB and ethernet is going on the same bus there is an occasional package loss. This prevents the Pi from being able to run files with higher bitrate than red book.
The comminuty is trying to solve this problem with software.

Because I did not want to wait for that development I purchased the Alix and tried MPDPUP.

@Idolse:
switching off the alix board and starting up again has now stopped mpdpup to put signal out to WaveIO. I have tried unpowering-unplugging/repowering-replugging numerous times but I can't get the sound back.

The client is showing that music is playing.
Strange thing is also that when repowering always last the play queue is loaded that was playing when I had sound, even when putting in new playlists afterwards and repowering.

How can I unmute this?

Kind regards,
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ldolse

Joined: 23 Oct 2009
Posts: 366

PostPosted: Thu 07 Mar 2013, 21:00    Post subject:  

Hi Supersurfer, the mute issue is a known issue for the WaveIO, refer to the second post to fix it:
http://www.murga-linux.com/puppy/viewtopic.php?p=662897#662897
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Supersurfer

Joined: 02 Mar 2013
Posts: 13

PostPosted: Fri 08 Mar 2013, 14:03    Post subject:  

Hi Idolse,

Thanks for the link, I missed that piece. It's working again.

I wll do some comparison between the raspberry pi and alix this weekend, keep jou posted!

Regards,
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Supersurfer

Joined: 02 Mar 2013
Posts: 13

PostPosted: Mon 11 Mar 2013, 06:25    Post subject:  

Hi Idolse,

I would like to thank you for your work on this distribution! I am very happy with it, and as a linux noob I am able to get it working due to your interface and your help on this forum.

Once set up it runs very stable.
I have been trying the advanced adjustments but it does not always go through all the steps, using ssh.
I delete the save file and run the set up wizard again, then it does not configur the waveio.

Also; how can I select mpd 0.17? I do not see it in the set up interface.

As for comparison to the raspberry pi:
The pi runs less stable due usb buss speed problems (probably also because of different software), sounds less good (is this software or hardware related?).

But the pi is very compact and cheap! I am thinking of building a music player with the pi, a simple usb dac (pcm2707) and an sd card player. This could fit in a nice small hammond box so you can take your player with you on holiday together with a nice headphone amp and a pair of good headphones.

So it would be nice to have mpdpup also for arm boards but for now I am very happy with mpdpup on alix!

Kind regards, and keep up the good work!
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ldolse

Joined: 23 Oct 2009
Posts: 366

PostPosted: Mon 11 Mar 2013, 06:41    Post subject:  

Glad it's working for you more or less. Regarding the advanced adjustments, I would need some more detail - I'm not aware of anything in that area failing, though there is a known issue where nrpacks is not applied and needs to be manually set.

MPD 0.17 can be set as default in one of the other menus of the wizard after the first time you run it - the system menu if I recall correctly.

ARM is a fairly low priority for me right now - other people in the Puppy Linux community are working on Raspberry Pi support, but I would need to port mpdPup to their system. The USB bus issues don't leave me much motivated, right now I'm having a hard enough time finding time for the changes for the next x86 release Smile
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Supersurfer

Joined: 02 Mar 2013
Posts: 13

PostPosted: Mon 11 Mar 2013, 10:30    Post subject:  

Hi Idolse,

Quote:
MPD 0.17 can be set as default in one of the other menus of the wizard after the first time you run it - the system menu if I recall correctly.


What do you mean with 'one of the other menus'? After first start up I go automaically through all the menu's in SSH. I know with a headed PC (screen, mouse, keyboard) you see more menu's but can these menu's also be made visible with the SSH connection? For Alix can not be run with a screen.

How do I manually set nrpacks?

You are right about your ARM priority, maybe if things develop in the future it might become more interesting..........

Kind regards,

[/quote]
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