dump1090-fa.service failing

[ThePhoenix]

At midday my Pi stopped feeding FR24 (and FlightAware)
restart dump1090-fa fails, even after rebooting.


The contents of the recommended 'dumps' are copied below. Would someone help me interpret please?

pi@raspberrypi:~ $ systemctl status dump1090-fa.service
● dump1090-fa.service - dump1090 ADS-B receiver (FlightAware customization)
Loaded: loaded (/lib/systemd/system/dump1090-fa.service; enabled; vendor preset: enabled)
Drop-In: /etc/systemd/system/dump1090-fa.service.d
└─bias-t.conf
Active: activating (auto-restart) (Result: exit-code) since Thu 2020-04-09 18:45:37 BST; 6s ago
Docs: https://flightaware.com/adsb/piaware/
Process: 672 ExecStartPre=/home/pi/rtl_biast/build/src/rtl_biast -b 1 (code=exited, status=1/FAILURE)

And

journalctl -xe

-- A start job for unit dump1090-fa.service has finished with a failure.
--
-- The job identifier is 1777 and the job result is failed.
Apr 09 18:55:44 raspberrypi sudo[1093]: pi : TTY=pts/0 ; PWD=/home/pi ; USER=root ; COMMAND=/bin/systemctl restart dump1090-fa
Apr 09 18:55:44 raspberrypi sudo[1093]: pam_unix(sudo:session): session opened for user root by pi(uid=0)
Apr 09 18:55:44 raspberrypi systemd[1]: Stopped dump1090 ADS-B receiver (FlightAware customization).
-- Subject: A stop job for unit dump1090-fa.service has finished
-- Defined-By: systemd
-- Support: https://www.debian.org/support
--
-- A stop job for unit dump1090-fa.service has finished.
--
-- The job identifier is 1835 and the job result is done.
Apr 09 18:55:44 raspberrypi systemd[1]: Starting dump1090 ADS-B receiver (FlightAware customization)...
-- Subject: A start job for unit dump1090-fa.service has begun execution
-- Defined-By: systemd
-- Support: https://www.debian.org/support
--
-- A start job for unit dump1090-fa.service has begun execution.
--
-- The job identifier is 1835.
Apr 09 18:55:44 raspberrypi dump1090-fa[1100]: No supported devices found.
Apr 09 18:55:44 raspberrypi systemd[1]: dump1090-fa.service: Control process exited, code=exited, status=1/FAILURE
-- Subject: Unit process exited
-- Defined-By: systemd
-- Support: https://www.debian.org/support
--
-- An ExecStartPre= process belonging to unit dump1090-fa.service has exited.
--
-- The process' exit code is 'exited' and its exit status is 1.
Apr 09 18:55:44 raspberrypi systemd[1]: dump1090-fa.service: Failed with result 'exit-code'.
-- Subject: Unit failed
-- Defined-By: systemd
-- Support: https://www.debian.org/support
--
-- The unit dump1090-fa.service has entered the 'failed' state with result 'exit-code'.
Apr 09 18:55:44 raspberrypi systemd[1]: Failed to start dump1090 ADS-B receiver (FlightAware customization).
-- Subject: A start job for unit dump1090-fa.service has failed
-- Defined-By: systemd
-- Support: https://www.debian.org/support
--
-- A start job for unit dump1090-fa.service has finished with a failure.
--
-- The job identifier is 1835 and the job result is failed.
Apr 09 18:55:44 raspberrypi sudo[1093]: pam_unix(sudo:session): session closed for user root

[wiedehopf]

looks like this is failing: /home/pi/rtl_biast/build/src/rtl_biast -b 1
Did you by chance delete that folder / binary?

Otherwise, test the receiver: https://github.com/wiedehopf/adsb-wi...Debug-commands

[ThePhoenix]

I haven't touched it for months. I'll take a look at the test link you posted.

Thank you

[wiedehopf]

Can you show the output for this:

pgrep -a dump1090

[ThePhoenix]

I'm just off up into the loft (attic). Looks like its a hardware issue as ./rtl_biast -b 1 reports something to do with the hardware not being found.

I am a little paranoid that the SD card will be the first thing to fail, and always want to suspect that, but doesn't seem to be implicated here - yet. I'll report back on findings soon.

[ThePhoenix]

Seemed to be the short USB cable that connects the RTL dongle to the Pi. I've replaced it with another I have and all seems fine. No idea how that might have 'failed'. Must be some tarnish.

Anyhow all good now.

Thank you wiedehopf for taking the time.