USB DAC incorrectly set in mpd.conf (NO SOUND)

[sonycman]

Hello!
I've got a Raspberry PI 3 B and facing a no sound issue with RuneAudio.
Tried both RuneAudio_rpi2_rp3_0.4-beta_20160321 and RuneAudio_rpi2_rp3_0.4-beta_20170229 images.

Runeaudio sees my Parasound USB DAC just as normal and it is selected in the WebUI.
But when I'am trying to playback the music time progress indication freezes at zero and there is no sound output from the DAC.

Debug information and attached also.

I've managed to bypass this problem myself.
There is wrongfully set option in the mpd.conf file:
device "hw:0," <- no subdevice number at all

So I changed it to:
device "hw:0,0"
and protect the file from modification on reboot by using chattr +i command.

Now my DAC plays fine and sound is just great!

This is only a temporary solution and I wish you guys correct it the right way when you can.

Thanks for otherwise great sound system!
Regards,
Vladimir.

[sonycman]

Frank, can you tell me, please, which application writes to mpd.conf at each boot?
If you can't emulate this bug youself I could try to dig deeply on my side...

Regards,
Vlad

[hondagx35]

[sonycman]

Hi Frank.

Thanks for the hint!
Would you, please, show me how to enable debug function runelog and how to take a look at its output?

[sonycman]

[janui]

[sonycman]

Thanks, janui, I'll test it as soon as I can.

Just curious, why the authors did added these brackets at all?
Is these brackets are really necessary there?

Square bracket is a special character and needs extra care when using it.
Most probably they are used incorrect syntax and now we have the issue here.

[janui]

Hi sonycman,
Some smart guys built Rune. I expect that the square brackets are needed for something.
janui

[sonycman]

Hi janui,
[ ] is a special character in the regular expression, it is used to denote a range.
And a special escape sequence should be used to pass these brackets as an ordinary literal character to the "grep" command.
The code in .php file does not specify any range while searching for a sound card name, it looking for a constant text string.

So meaning of the brackets here is beyond my understanding, and instead of attempting to escape them correctly would'nt it be easier to just delete them both?

I'll see what I can get and will report later...

[sonycman]