In this section, we have included some frequently encountered hardware and software configuration issues when working with Apollo. Along with the issues, we have provided some suggestions on ways to resolve them.

My speaker is not generating any sound, what should I do?#

If your speaker is not working, we suggest the following troubleshooting steps:

  • Open up NVIDIA GUI to see which peripherals are enabled, type the following into the command line:

    sudo /opt/nvidia/jetson-io/

  • Ensure that the i2s5 is enabled. If not, Configure 40-pin expansion header and enable i2s5. You will be prompted to save and reboot.

  • Once your device has been rebooted, be sure to configure the soundcard appropriately with the following command:

    amixer -c jetsonxaviernxa sset "I2S5 Mux" ADMAIF2

  • Finally run a speaker test with this command:

    speaker-test -D hw:jetsonxaviernxa,1 -c 2 -r 48000 -F S16_LE -t sine -f 500

My Microphone isn’t recording anything, what should I do?#

If you are struggling to record with your microphone, follow these steps:

  • The I2S peripheral which connects to the microphones is constantly running, there is no need to address that.

  • Reconfigure the sound card subdevice appropriately with the following command:

    amixer -c jetsonxaviernxa cset name='ADMAIF1 Mux' I2S3

  • Record using the following command:

    arecord -D hw:jetsonxaviernxa,0 -c 2 -d 10 -r 48000 -f S32_LE test.wav

The OLED screen isn’t turning on, what can I do?#

If you are struggling with the OLED screen check out the demo applications in /opt/apollo/oled/. You will find examples and setup scripts to verify the functionality.

My camera is not working, what can I do to troubleshoot?#

If your camera is not functioning after connected to Apollo, try out the following command to verify if your camera is working:

  • ls /dev/video\*
  • nvgstcapture-1.0 --camsrc=0 --cap-dev-node=<N>

*Note: <N> is the /dev/videoN

My device is heating and/or the fan has stopped working, how can I reset the fan?#

Simply execute the following command:

sudo jetson_clocks —fan

What to do if I am having software issues with Apollo?#

If you are having software issues, you can post your query along with the tag #Apollo on Nvidia Developer forum from the link below:

SmartCow team will look into your posted issue and get back to you as soon as possible.