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troubleshooting.md

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Fates - Troubleshooting

Etcher doesn't work for me

You can also try ApplePiBaker if you're on MacOS. Otherwise you may be looking at various arcane dd commands.

Power

  • Be sure you are using a good power supply. The Pi 3b+ needs a 5V 2.5A power supply. The Pi 4 requires a 5V 3A power supply. Buy one of the official Raspberry Pi power supplies if you're not sure.

  • Be sure you're using a good quality USB-C cable (and it's not just a "charging" cable)

  • DO NOT TRY TO POWER FATES FROM YOUR LAPTOP USB-C Ports. Use a dedicated 3A power supply.

  • Check your input voltages

  • SUPERCOLLIDER FAIL error on boot: This happens because the Jack Audio system is not starting properly. A number of things can cause this. There is a information and support thread on the "lines" forum here

Audio tests

SSH to the pi/fates to conduct these tests. Have your audio outputs and inputs connected to speakers/mixer and a sound source.

A low level test…
Firstst stop jack, so we can test the DAC directly with ALSA

sudo systemctl stop norns-jack.service

Now use aplay to play a wave file.

aplay ~/dust/audio/common/waves/01.wav this should play a simple clean bell tone

An alternate test is speaker-test
speaker-test -t wav -c 2 -l 3 -D hw:0,0

This will play a female voice saying "front right" and "front left" in each channel 3 times.

Record 15 seconds of audio from the inputs and save to a .wav file arecord -f dat -vv -V stereo -d 15 ~/audio-test.wav

Play back the same audio file
aplay -vv -V stereo ~/audio-test.wav

sudo reboot to get things back to normal.

###Raspberry Pi LED status messages

FAQ

See Frequently Asked Questions for other general info