[PROBLEM] Dac USB M2Tech

[Tim Curtis]

Hi,

The result below suggests your configuration may be broken.

Code:

pi@moode:~ $ cat /proc/asound/card0/id
cat: /proc/asound/card0/idcat: No such file or directory                                                                                                

The result of that command should return the string "ALSA" on a system with only a single USB audio device plugged in. It represents the id of the on-board Raspberry Pi audio device and it's enabled via the "dtparam=audio=on" line in /boot/config.txt. Below is an example from one of my test systems with a USB DAC plugged in.

Code:

pi@rp5:~ $ cat /proc/asound/card0/id
ALSA

pi@rp5:~ $ cat /proc/asound/card1/id
DAC

pi@rp5:~ $ cat /boot/config.txt
disable_splash=1
hdmi_drive=2
dtparam=i2c_arm=on
dtparam=i2s=on
dtparam=audio=on
#dtoverlay=pi3-disable-wifi
#dtoverlay=pi3-disable-bt
pi@rp5:~ $