Re: No output on UDRC-II


  Hi Paul,

Thanks for you response.  I copied to, removed everything except the variables that you quoted, and I changed the levels to what you specified.  Then I ran to set all values to a known state, followed by to set the values that you suggested (see below).  Unfortunately,  I'm still getting no output from the DIN-6 or the HD-15.

root@hammy:~# cat
amixer -c udrc -s << EOF
#  Set input and output levels to max
sset 'ADC Level' 19dB
sset 'LO Driver Gain' 19dB
sset 'PCM' 20dB
#  Turn on AFOUT
sset 'CM_L to Left Mixer Negative Resistor' '10 kOhm'
sset 'IN1_L to Left Mixer Positive Resistor' '10 kOhm'
#  Turn on DISCOUT
sset 'CM_R to Right Mixer Negative Resistor' '10 kOhm'
sset 'IN1_R to Right Mixer Positive Resistor' '10 kOhm'
#  Turn on the LO DAC
sset 'LO DAC' on
#  Turn on AFIN
sset 'LOL Output Mixer L_DAC' on
#  Turn on TONEIN
sset 'LOR Output Mixer R_DAC' on
alsactl save
root@hammy:~# ./  > /dev/null
root@hammy:~# ./  > /dev/null
root@hammy:~# speaker-test -Dplughw:CARD=udrc,DEV=0 -t sine -f 1200 -c 2 -l 0

   I redirected the script output to /dev/null for brevity; alsamixer confirmed the settings were accepted.  I also tried setting force_turbo=1 in /boot/config.txt since it had been suggested here that the clock speed might affect the RPi 2.  This appeared to make no difference.

  Any other suggestions for troubleshooting this?



Join to automatically receive all group messages.