Debug commands

Posting logs on the flightaware forum:

enclose any log or code you post in ```, like this:

```
text
text
text
```

The correct symbol may not be on your keyboard, in that case you can copy the line below:

```

Restarting a service (lighttpd is uses as an example, just replace that with the service you want to restart0

sudo systemctl restart lighttpd

Lighttpd

sudo journalctl --no-pager -u lighttpd
ls /etc/lighttpd/conf-enabled
grep mod_setenv /etc/lighttpd/ -rnT

dump1090-fa

sudo journalctl --no-pager -u dump1090-fa

readsb

sudo journalctl --no-pager -u readsb

dump978-fa

sudo journalctl --no-pager -u dump978-fa

Test the rtl-sdr receiver

sudo bash -c "$(wget -nv -O - https://raw.githubusercontent.com/wiedehopf/adsb-scripts/master/rtl_test.sh)"

Undervoltage

sudo dmesg --ctime | grep voltage
bash -c "$(wget -nv -O - https://raw.githubusercontent.com/wiedehopf/adsb-scripts/master/throttled.sh)"

graphs1090

sudo journalctl --no-pager -u collectd
sudo /usr/share/graphs1090/graphs1090.sh

airspy_adsb

sudo journalctl --no-pager -u airspy_adsb

blacklist rtl dvb-t kernel drivers

echo -e 'blacklist rtl2832\nblacklist dvb_usb_rtl28xxu\nblacklist rtl8192cu\nblacklist rtl8xxxu\n' | sudo tee /etc/modprobe.d/blacklist-rtl-sdr.conf

RPi Airspy lost samples

Any other USB devices plugged in?

You can check throttling and voltage:

vcgencmd get_throttled
sudo dmesg --ctime | grep voltage

You can also try using force_turbo=1 in your /boot/config.txt if the RPi is switching CPU frequencies and that is causing a problem. (goes from scaling to performance governor) Note that some form of cooling is recommended.

dump1090-mutability

cat /var/log/dump1090-mutability.log

Rudimentary sd-card test

for i in {1..4}; do
  sudo dd if=/dev/urandom of=/run/testFile bs=1M count=50 status=none
  cp /run/testFile /tmp
  sync
  sudo echo 3 > /proc/sys/vm/drop_caches
  diff -s /run/testFile /tmp/testFile
done