Hello, I have an issue with my USBridge connected to a DIYNHK 8 channel DAC.
USBridge is running DietPi v6.12 with only RoonBridge installed.
The DAC is detected by Roon without any issue and configured as follows:
All is good with a stereo stream. With an 8 channel stream I get a “Transport: failed to initialize the audio device” error. Except ONE TIME at the beginning of my experiments…
Using my MacBook Air as a Roon endpoint connected to the DIYINHK DAC, I am able to stream multichannel without any issue. This makes me think this is a more USBridge/DietPi problem than a DAC problem.
The DAC is said to be UAC2 compliant and not requiring drivers on Linux and Mac OS.
Alsamixer shows this:
Here is the outcome of aplay -L:
root@DietPi:~# aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
sysdefault:CARD=atm7059link
atm7059_link,
Default Audio Device
dmix:CARD=atm7059link,DEV=0
atm7059_link,
Direct sample mixing device
dmix:CARD=atm7059link,DEV=1
atm7059_link,
Direct sample mixing device
dmix:CARD=atm7059link,DEV=2
atm7059_link,
Direct sample mixing device
dsnoop:CARD=atm7059link,DEV=0
atm7059_link,
Direct sample snooping device
dsnoop:CARD=atm7059link,DEV=1
atm7059_link,
Direct sample snooping device
dsnoop:CARD=atm7059link,DEV=2
atm7059_link,
Direct sample snooping device
hw:CARD=atm7059link,DEV=0
atm7059_link,
Direct hardware device without any conversions
hw:CARD=atm7059link,DEV=1
atm7059_link,
Direct hardware device without any conversions
hw:CARD=atm7059link,DEV=2
atm7059_link,
Direct hardware device without any conversions
plughw:CARD=atm7059link,DEV=0
atm7059_link,
Hardware device with all software conversions
plughw:CARD=atm7059link,DEV=1
atm7059_link,
Hardware device with all software conversions
plughw:CARD=atm7059link,DEV=2
atm7059_link,
Hardware device with all software conversions
sysdefault:CARD=D20
DIYINHK USB Audio 2.0, USB Audio
Default Audio Device
front:CARD=D20,DEV=0
DIYINHK USB Audio 2.0, USB Audio
Front speakers
surround21:CARD=D20,DEV=0
DIYINHK USB Audio 2.0, USB Audio
2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=D20,DEV=0
DIYINHK USB Audio 2.0, USB Audio
4.0 Surround output to Front and Rear speakers
surround41:CARD=D20,DEV=0
DIYINHK USB Audio 2.0, USB Audio
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=D20,DEV=0
DIYINHK USB Audio 2.0, USB Audio
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=D20,DEV=0
DIYINHK USB Audio 2.0, USB Audio
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=D20,DEV=0
DIYINHK USB Audio 2.0, USB Audio
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=D20,DEV=0
DIYINHK USB Audio 2.0, USB Audio
IEC958 (S/PDIF) Digital Audio Output
dmix:CARD=D20,DEV=0
DIYINHK USB Audio 2.0, USB Audio
Direct sample mixing device
dsnoop:CARD=D20,DEV=0
DIYINHK USB Audio 2.0, USB Audio
Direct sample snooping device
hw:CARD=D20,DEV=0
DIYINHK USB Audio 2.0, USB Audio
Direct hardware device without any conversions
plughw:CARD=D20,DEV=0
DIYINHK USB Audio 2.0, USB Audio
Hardware device with all software conversions
The following tests are successful:
speaker-test -D surround71:D20 -c 2 --> Left and Right channel play
speaker-test -D surround71:D20 -c 8 --> 8 channels play, so the USBridge is actually capable of streaming 8 channels to the DAC
Any idea? How can I “force” RoonBridge to output 8 channels to surround71:D20 device?