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Solved: mpd streaming error on 7.2.1
#21
as suggested by @bitlab i disabled alsa loopback opstion and i upgraded this packet mpd-libcurl3-gnutls.
Issue still remain. Little recap:

Streaming stops, bubble upnp goes in pause. If i restart mpd doesnt works. If i restart dac connected throught usb to Raspberry come back to work.
The issue is the usb port disconnecion. Yesterday i reinstalled moode 7.2.1
Here some log errors taken when i had issue:


SYSLOG

Jun 13 10:25:39 MOODE kernel: [ 2132.091164] usb 1-1.3: USB disconnect, device number 3
Jun 13 10:25:39 MOODE kernel: [ 2132.091209] usb 1-1.3: cannot submit urb (err = -19)
Jun 13 10:25:40 MOODE kernel: [ 2132.394605] usb 1-1.3: new high-speed USB device number 4 using xhci_hcd
Jun 13 10:25:40 MOODE kernel: [ 2132.525230] usb 1-1.3: New USB device found, idVendor=22e8, idProduct=ca02, bcdDevice= 6.15
Jun 13 10:25:40 MOODE kernel: [ 2132.525239] usb 1-1.3: New USB device strings: Mfr=1, Product=3, SerialNumber=0
Jun 13 10:25:40 MOODE kernel: [ 2132.525246] usb 1-1.3: Product: CA CXA81 2.0
Jun 13 10:25:40 MOODE kernel: [ 2132.525252] usb 1-1.3: Manufacturer: CA
Jun 13 10:25:40 MOODE kernel: [ 2132.609220] usb 1-1.3: 1:3 : unsupported format bits 0x100000000
Jun 13 10:25:40 MOODE mtp-probe: checking bus 1, device 4: "/sys/devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.3"
Jun 13 10:25:40 MOODE mtp-probe: bus: 1, device: 4 was not an MTP device
Jun 13 10:25:40 MOODE mtp-probe: checking bus 1, device 4: "/sys/devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.3"
Jun 13 10:25:40 MOODE mtp-probe: bus: 1, device: 4 was not an MTP device

DMESG

[ 2132.091164] usb 1-1.3: USB disconnect, device number 3
[ 2132.091209] usb 1-1.3: cannot submit urb (err = -19)
[ 2132.394605] usb 1-1.3: new high-speed USB device number 4 using xhci_hcd
[ 2132.525230] usb 1-1.3: New USB device found, idVendor=22e8, idProduct=ca02, bcdDevice= 6.15
[ 2132.525239] usb 1-1.3: New USB device strings: Mfr=1, Product=3, SerialNumber=0
[ 2132.525246] usb 1-1.3: Product: CA CXA81 2.0
[ 2132.525252] usb 1-1.3: Manufacturer: CA
[ 2132.609220] usb 1-1.3: 1:3 : unsupported format bits 0x100000000


LSUSB -TV

pi@MOODE:/var/local/www/commandw $ sudo lsusb -tv
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
|__ Port 3: Dev 4, If 0, Class=Audio, Driver=snd-usb-audio, 480M
|__ Port 3: Dev 4, If 1, Class=Audio, Driver=snd-usb-audio, 480M
|__ Port 3: Dev 4, If 2, Class=Application Specific Interface, Driver=, 480M


ALSACAP

*** Scanning for playback devices ***
Card 0, ID `b1', name `bcm2835 HDMI 1'
Device 0, ID `bcm2835 HDMI 1', name `bcm2835 HDMI 1', 4 subdevices (4 available)
1..8 channels, sampling rate 8000..192000 Hz
Sample formats: U8, S16_LE
Buffer size range from 80 to 131072
Period size range from 80 to 131072

Subdevice 0, name `subdevice #0'
Subdevice 1, name `subdevice #1'
Subdevice 2, name `subdevice #2'
Subdevice 3, name `subdevice #3'
Card 1, ID `Headphones', name `bcm2835 Headphones'
Device 0, ID `bcm2835 Headphones', name `bcm2835 Headphones', 4 subdevices (4 available)
1..8 channels, sampling rate 8000..192000 Hz
Sample formats: U8, S16_LE
Buffer size range from 80 to 131072
Period size range from 80 to 131072

Subdevice 0, name `subdevice #0'
Subdevice 1, name `subdevice #1'
Subdevice 2, name `subdevice #2'
Subdevice 3, name `subdevice #3'
Card 2, ID `C20', name `CA CXA81 2.0'
Device 0, ID `USB Audio', name `USB Audio', 1 subdevices (1 available)
2 channels, sampling rate 44100..705600 Hz
Sample formats: S16_LE, S32_LE, SPECIAL
Buffer size range from 16 to 262144
Period size range from 8 to 131072

Subdevice 0, name `subdevice #0'
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#22
Audio device suddenly disconnecting from USB port suggests some sort of issue external to moOde software for example hardware, cable, power supply, incompatibility between audio device and Linux, etc.
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#23
After several tests i can affirm that issu was caused by usb cable.
I swapped yesterday my audiophile usb cable with my printer cable and seems to be working without issues.
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