Dump978 connection closed

FlightAware ADS-B Flight Tracking
1

hello.

Periodically, dump978 has problems.

978mhz dongle : FlightAware Pro Stick (30cm usb extension cable)
Raspberry pi 4(3A power supply)

ADS-B and UAT are in operation together.
1090mhz dongle : FlightAware Pro Stick Plus (30cm usb extension cable)
The dump1090-fa has no problem.

If the following log occurs, you must restart the dump978-fa or reconnect the dongle, but this problem also occurs again.

pi@raspberrypi:~ $ sudo systemctl status dump978-fa
● dump978-fa.service - dump978 ADS-B UAT receiver
Loaded: loaded (/lib/systemd/system/dump978-fa.service; enabled; vendor preset: enabled)
Active: active (running) since Sun 2020-09-13 18:56:37 KST; 2h 46min ago
Docs: PiAware - ADS-B and MLAT Receiver - FlightAware
Main PID: 19383 (dump978-fa)
Tasks: 4 (limit: 4915)
CGroup: /system.slice/dump978-fa.service
└─19383 /usr/bin/dump978-fa --sdr driver=rtlsdr,serial=00000978 --format CS8 --raw-port 30978 --json-port 30979

9월 13 19:19:15 raspberrypi dump978-fa[19383]: [::]:30978: accepted a connection from [::1]:41264
9월 13 19:19:16 raspberrypi dump978-fa[19383]: [::1]:41264: connection closed
9월 13 19:19:16 raspberrypi dump978-fa[19383]: [::]:30978: accepted a connection from [::1]:41268
9월 13 19:19:17 raspberrypi dump978-fa[19383]: [::1]:41268: connection closed
9월 13 19:19:17 raspberrypi dump978-fa[19383]: [::]:30978: accepted a connection from [::1]:41270
9월 13 19:19:17 raspberrypi dump978-fa[19383]: [::1]:41270: connection closed
9월 13 19:19:17 raspberrypi dump978-fa[19383]: [::]:30978: accepted a connection from [::1]:41272
9월 13 19:19:18 raspberrypi dump978-fa[19383]: [::1]:41272: connection closed
9월 13 19:19:18 raspberrypi dump978-fa[19383]: [::]:30978: accepted a connection from [::1]:41276
9월 13 19:19:19 raspberrypi dump978-fa[19383]: [::1]:41276: connection closed

2

Well, that’s telling you that there’s some other local process connecting to dump978-fa to receive data, then immediately disconnecting. What’s that other process?

1 Like
3

After the connection closed message, an error occurs on the Web Interface as shown below.

Problem fetching data from dump978.
AJAX call failed (error: Not Found). Maybe dump978 is no longer running?
The displayed map data will be out of date

4

What does syslog say?

I guess that the skyaware978 process is restarting for some reason. Looking in /var/log/syslog, and the output of systemctl status skyaware978 and journalctl -u skyaware978, should tell you something about why that is happening.

(I’d also note that UAT is only really used in the US, I doubt you are seeing any real UAT signals at your location)

5

Found Under-voltage problem in syslog,

Under-voltage detected! (0x00050005)
Voltage normalised (0x00000000000000)

im using the original Power Supply:(

(i found out this time that UAT Positions can be received even in S.Korea)
uat

syslog
Sep 17 11:08:40 raspberrypi kernel: [ 4226.523846] usb 1-1.4: USB disconnect, device number 4
Sep 17 11:08:40 raspberrypi dump978-fa[1644]: cb transfer status: 1, canceling…
Sep 17 11:08:40 raspberrypi dump1090-fa[491]: cb transfer status: 5, canceling…
Sep 17 11:08:40 raspberrypi dump1090-fa[491]: rtlsdr: rtlsdr_read_async returned unexpectedly, probably lost the USB device, bailing out
Sep 17 11:08:40 raspberrypi dump1090-fa[491]: Thu Sep 17 11:08:40 2020 KST Waiting for receive thread termination
Sep 17 11:08:40 raspberrypi dump1090-fa[491]: Thu Sep 17 11:08:40 2020 KST Abnormal exit.
Sep 17 11:08:40 raspberrypi systemd[1]: dump1090-fa.service: Main process exited, code=exited, status=1/FAILURE
Sep 17 11:08:40 raspberrypi systemd[1]: dump1090-fa.service: Failed with result ‘exit-code’.
Sep 17 11:08:40 raspberrypi kernel: [ 4226.882610] usb 1-1.4: new high-speed USB device number 6 using xhci_hcd
Sep 17 11:08:40 raspberrypi kernel: [ 4227.024479] usb 1-1.4: New USB device found, idVendor=0bda, idProduct=2832, bcdDevice= 1.00
Sep 17 11:08:40 raspberrypi kernel: [ 4227.024498] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Sep 17 11:08:40 raspberrypi kernel: [ 4227.024514] usb 1-1.4: Product: RTL2832U
Sep 17 11:08:40 raspberrypi kernel: [ 4227.024529] usb 1-1.4: Manufacturer: Realtek
Sep 17 11:08:40 raspberrypi kernel: [ 4227.024544] usb 1-1.4: SerialNumber: 00001090
Sep 17 11:08:40 raspberrypi kernel: [ 4227.034154] usb 1-1.2: USB disconnect, device number 3
Sep 17 11:08:40 raspberrypi mtp-probe: checking bus 1, device 6: “/sys/devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.4”
Sep 17 11:08:40 raspberrypi mtp-probe: bus: 1, device: 6 was not an MTP device
Sep 17 11:08:40 raspberrypi mtp-probe: checking bus 1, device 6: “/sys/devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.4”
Sep 17 11:08:40 raspberrypi mtp-probe: bus: 1, device: 6 was not an MTP device
Sep 17 11:08:40 raspberrypi kernel: [ 4227.332608] usb 1-1.2: new high-speed USB device number 7 using xhci_hcd
Sep 17 11:08:40 raspberrypi kernel: [ 4227.474386] usb 1-1.2: New USB device found, idVendor=0bda, idProduct=2832, bcdDevice= 1.00
Sep 17 11:08:40 raspberrypi kernel: [ 4227.474405] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Sep 17 11:08:40 raspberrypi kernel: [ 4227.474421] usb 1-1.2: Product: RTL2832U
Sep 17 11:08:40 raspberrypi kernel: [ 4227.474436] usb 1-1.2: Manufacturer: Realtek
Sep 17 11:08:40 raspberrypi kernel: [ 4227.474450] usb 1-1.2: SerialNumber: 00000978
Sep 17 11:08:41 raspberrypi mtp-probe: checking bus 1, device 7: “/sys/devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.2”
Sep 17 11:08:41 raspberrypi mtp-probe: bus: 1, device: 7 was not an MTP device
Sep 17 11:08:41 raspberrypi mtp-probe: checking bus 1, device 7: “/sys/devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.2”
Sep 17 11:08:41 raspberrypi mtp-probe: bus: 1, device: 7 was not an MTP device
Sep 17 11:08:41 raspberrypi kernel: [ 4227.992725] Under-voltage detected! (0x00050005)
Sep 17 11:08:45 raspberrypi dump978-fa[1644]: Message source reports error: TIMEOUT
Sep 17 11:08:45 raspberrypi dump978-fa[1644]: Abnormal exit
Sep 17 11:08:45 raspberrypi skyaware978[497]: Connection failed: End of file
Sep 17 11:08:45 raspberrypi systemd[1]: dump978-fa.service: Main process exited, code=exited, status=1/FAILURE
Sep 17 11:08:45 raspberrypi systemd[1]: dump978-fa.service: Failed with result ‘exit-code’.
Sep 17 11:08:45 raspberrypi kernel: [ 4232.152696] Voltage normalised (0x00000000)

pi@raspberrypi:~ $ journalctl -u skyaware978
– Logs begin at Thu 2020-09-17 13:33:30 KST, end at Thu 2020-09-17 17:12:32 KST. –
9월 17 13:33:34 raspberrypi systemd[1]: Started skyaware978 ADS-B UAT web display.
9월 17 13:33:35 raspberrypi skyaware978[486]: Connecting to localhost:30978
9월 17 13:33:35 raspberrypi skyaware978[486]: Connected to [::1]:30978
9월 17 13:37:34 raspberrypi skyaware978[486]: Connection failed: End of file
9월 17 13:38:04 raspberrypi skyaware978[486]: Connecting to localhost:30978
9월 17 13:38:04 raspberrypi skyaware978[486]: connection to [::1]:30978 failed: Connection refused
9월 17 13:38:04 raspberrypi skyaware978[486]: connection to 127.0.0.1:30978 failed: Connection refused
9월 17 13:38:04 raspberrypi skyaware978[486]: Connection failed: Connection refused
9월 17 13:38:34 raspberrypi skyaware978[486]: Connecting to localhost:30978
9월 17 13:38:34 raspberrypi skyaware978[486]: Connected to [::1]:30978
9월 17 15:58:49 raspberrypi systemd[1]: Stopping skyaware978 ADS-B UAT web display…
9월 17 15:58:49 raspberrypi systemd[1]: skyaware978.service: Main process exited, code=killed, status=15/TERM
9월 17 15:58:49 raspberrypi systemd[1]: skyaware978.service: Succeeded.
9월 17 15:58:49 raspberrypi systemd[1]: Stopped skyaware978 ADS-B UAT web display.
9월 17 15:58:49 raspberrypi systemd[1]: Started skyaware978 ADS-B UAT web display.
9월 17 15:58:49 raspberrypi skyaware978[2435]: Connecting to localhost:30978
9월 17 15:58:49 raspberrypi skyaware978[2435]: Connected to [::1]:30978
9월 17 15:58:50 raspberrypi systemd[1]: Stopping skyaware978 ADS-B UAT web display…
9월 17 15:58:50 raspberrypi systemd[1]: skyaware978.service: Main process exited, code=killed, status=15/TERM
9월 17 15:58:50 raspberrypi systemd[1]: skyaware978.service: Succeeded.
9월 17 15:58:50 raspberrypi systemd[1]: Stopped skyaware978 ADS-B UAT web display.
9월 17 15:58:50 raspberrypi systemd[1]: Started skyaware978 ADS-B UAT web display.
9월 17 15:58:50 raspberrypi skyaware978[2487]: Connecting to localhost:30978
9월 17 15:58:50 raspberrypi skyaware978[2487]: Connected to [::1]:30978
9월 17 15:58:57 raspberrypi systemd[1]: Stopping skyaware978 ADS-B UAT web display…
9월 17 15:58:57 raspberrypi systemd[1]: skyaware978.service: Main process exited, code=killed, status=15/TERM
9월 17 15:58:57 raspberrypi systemd[1]: skyaware978.service: Succeeded.
9월 17 15:58:57 raspberrypi systemd[1]: Stopped skyaware978 ADS-B UAT web display.
9월 17 15:58:57 raspberrypi systemd[1]: Started skyaware978 ADS-B UAT web display.
9월 17 15:58:57 raspberrypi skyaware978[2551]: Connecting to localhost:30978
9월 17 15:58:57 raspberrypi skyaware978[2551]: Connected to [::1]:30978
9월 17 15:58:58 raspberrypi systemd[1]: Stopping skyaware978 ADS-B UAT web display…
9월 17 15:58:58 raspberrypi systemd[1]: skyaware978.service: Main process exited, code=killed, status=15/TERM
9월 17 15:58:58 raspberrypi systemd[1]: skyaware978.service: Succeeded.
9월 17 15:58:58 raspberrypi systemd[1]: Stopped skyaware978 ADS-B UAT web display.
9월 17 15:58:58 raspberrypi systemd[1]: Started skyaware978 ADS-B UAT web display.
9월 17 15:58:58 raspberrypi skyaware978[2601]: Connecting to localhost:30978
9월 17 15:58:58 raspberrypi skyaware978[2601]: Connected to [::1]:30978
9월 17 15:58:58 raspberrypi systemd[1]: Stopping skyaware978 ADS-B UAT web display…
9월 17 15:58:58 raspberrypi systemd[1]: skyaware978.service: Main process exited, code=killed, status=15/TERM
9월 17 15:58:58 raspberrypi systemd[1]: skyaware978.service: Succeeded.
9월 17 15:58:58 raspberrypi systemd[1]: Stopped skyaware978 ADS-B UAT web display.
9월 17 15:58:58 raspberrypi systemd[1]: Started skyaware978 ADS-B UAT web display.
9월 17 15:58:58 raspberrypi skyaware978[2646]: Connecting to localhost:30978
9월 17 15:58:58 raspberrypi skyaware978[2646]: Connected to [::1]:30978
9월 17 15:58:59 raspberrypi systemd[1]: Stopping skyaware978 ADS-B UAT web display…
9월 17 15:58:59 raspberrypi systemd[1]: skyaware978.service: Main process exited, code=killed, status=15/TERM
9월 17 15:58:59 raspberrypi systemd[1]: skyaware978.service: Succeeded.
9월 17 15:58:59 raspberrypi systemd[1]: Stopped skyaware978 ADS-B UAT web display.
9월 17 15:58:59 raspberrypi systemd[1]: Started skyaware978 ADS-B UAT web display.
9월 17 15:58:59 raspberrypi skyaware978[2690]: Connecting to localhost:30978
9월 17 15:58:59 raspberrypi skyaware978[2690]: Connected to [::1]:30978
9월 17 15:59:14 raspberrypi systemd[1]: Stopping skyaware978 ADS-B UAT web display…
9월 17 15:59:14 raspberrypi systemd[1]: skyaware978.service: Main process exited, code=killed, status=15/TERM
9월 17 15:59:14 raspberrypi systemd[1]: skyaware978.service: Succeeded.
9월 17 15:59:14 raspberrypi systemd[1]: Stopped skyaware978 ADS-B UAT web display.
9월 17 15:59:14 raspberrypi systemd[1]: Started skyaware978 ADS-B UAT web display.
9월 17 15:59:14 raspberrypi skyaware978[2742]: Connecting to localhost:30978
9월 17 15:59:14 raspberrypi skyaware978[2742]: Connected to [::1]:30978
9월 17 15:59:15 raspberrypi systemd[1]: Stopping skyaware978 ADS-B UAT web display…
9월 17 15:59:15 raspberrypi systemd[1]: skyaware978.service: Main process exited, code=killed, status=15/TERM
9월 17 15:59:15 raspberrypi systemd[1]: skyaware978.service: Succeeded.
9월 17 15:59:15 raspberrypi systemd[1]: Stopped skyaware978 ADS-B UAT web display.
9월 17 15:59:15 raspberrypi systemd[1]: Started skyaware978 ADS-B UAT web display.
9월 17 15:59:15 raspberrypi skyaware978[2794]: Connecting to localhost:30978
9월 17 15:59:15 raspberrypi skyaware978[2794]: Connected to [::1]:30978

pi@raspberrypi:~ $ systemctl status skyaware978
● skyaware978.service - skyaware978 ADS-B UAT web display
Loaded: loaded (/lib/systemd/system/skyaware978.service; enabled; vendor preset: enabled)
Active: failed (Result: start-limit-hit) since Thu 2020-09-17 17:00:13 KST; 12min ago
Docs: PiAware - ADS-B and MLAT Receiver - FlightAware
Process: 6936 ExecStart=/usr/share/skyaware978/start-skyaware978 --json-dir /run/skyaware978 (code=killed, signal=TERM)
Main PID: 6936 (code=killed, signal=TERM)

9월 17 17:00:12 raspberrypi systemd[1]: Started skyaware978 ADS-B UAT web display.
9월 17 17:00:12 raspberrypi skyaware978[6936]: Connecting to localhost:30978
9월 17 17:00:12 raspberrypi skyaware978[6936]: Connected to [::1]:30978
9월 17 17:00:13 raspberrypi systemd[1]: Stopping skyaware978 ADS-B UAT web display…
9월 17 17:00:13 raspberrypi systemd[1]: skyaware978.service: Main process exited, code=killed, status=15/TERM
9월 17 17:00:13 raspberrypi systemd[1]: skyaware978.service: Succeeded.
9월 17 17:00:13 raspberrypi systemd[1]: Stopped skyaware978 ADS-B UAT web display.
9월 17 17:00:13 raspberrypi systemd[1]: skyaware978.service: Start request repeated too quickly.
9월 17 17:00:13 raspberrypi systemd[1]: skyaware978.service: Failed with result ‘start-limit-hit’.
9월 17 17:00:13 raspberrypi systemd[1]: Failed to start skyaware978 ADS-B UAT web display.

6

add new syslog

Sep 17 17:00:10 raspberrypi dump1090-fa[6498]: Thu Sep 17 17:00:10 2020 KST Caught SIGTERM, shutting down…
Sep 17 17:00:10 raspberrypi systemd[1]: Stopping dump1090 ADS-B receiver (FlightAware customization)…
Sep 17 17:00:10 raspberrypi dump1090-fa[6498]: Thu Sep 17 17:00:10 2020 KST Waiting for receive thread termination
Sep 17 17:00:10 raspberrypi dump978-fa[6599]: [::1]:36454: connection closed
Sep 17 17:00:10 raspberrypi systemd[1]: Stopping skyaware978 ADS-B UAT web display…
Sep 17 17:00:10 raspberrypi systemd[1]: skyaware978.service: Main process exited, code=killed, status=15/TERM
Sep 17 17:00:10 raspberrypi systemd[1]: skyaware978.service: Succeeded.
Sep 17 17:00:10 raspberrypi systemd[1]: Stopped skyaware978 ADS-B UAT web display.
Sep 17 17:00:10 raspberrypi systemd[1]: Started skyaware978 ADS-B UAT web display.
Sep 17 17:00:10 raspberrypi skyaware978[6743]: Connecting to localhost:30978
Sep 17 17:00:10 raspberrypi dump978-fa[6599]: [::]:30978: accepted a connection from [::1]:36760
Sep 17 17:00:10 raspberrypi skyaware978[6743]: Connected to [::1]:30978
Sep 17 17:00:11 raspberrypi dump1090-fa[6498]: Thu Sep 17 17:00:11 2020 KST Normal exit.
Sep 17 17:00:11 raspberrypi systemd[1]: dump1090-fa.service: Succeeded.
Sep 17 17:00:11 raspberrypi systemd[1]: Stopped dump1090 ADS-B receiver (FlightAware customization).
Sep 17 17:00:11 raspberrypi systemd[1]: Started dump1090 ADS-B receiver (FlightAware customization).
Sep 17 17:00:11 raspberrypi dump1090-fa[6775]: Thu Sep 17 17:00:11 2020 KST dump1090-fa 3.8.1 starting up.
Sep 17 17:00:11 raspberrypi dump1090-fa[6775]: rtlsdr: using device #0: Generic RTL2832U (Realtek, RTL2832U, SN 00001090)
Sep 17 17:00:11 raspberrypi systemd[1]: Stopping skyaware978 ADS-B UAT web display…
Sep 17 17:00:11 raspberrypi dump978-fa[6599]: [::1]:36760: connection closed
Sep 17 17:00:11 raspberrypi systemd[1]: skyaware978.service: Main process exited, code=killed, status=15/TERM
Sep 17 17:00:11 raspberrypi systemd[1]: skyaware978.service: Succeeded.
Sep 17 17:00:11 raspberrypi systemd[1]: Stopped skyaware978 ADS-B UAT web display.
Sep 17 17:00:11 raspberrypi systemd[1]: Started skyaware978 ADS-B UAT web display.
Sep 17 17:00:11 raspberrypi skyaware978[6795]: Connecting to localhost:30978
Sep 17 17:00:11 raspberrypi skyaware978[6795]: Connected to [::1]:30978
Sep 17 17:00:11 raspberrypi dump978-fa[6599]: [::]:30978: accepted a connection from [::1]:36764
Sep 17 17:00:11 raspberrypi dump1090-fa[6775]: Found Rafael Micro R820T tuner
Sep 17 17:00:11 raspberrypi dump1090-fa[6775]: Thu Sep 17 17:00:11 2020 KST Caught SIGTERM, shutting down…
Sep 17 17:00:11 raspberrypi systemd[1]: Stopping dump1090 ADS-B receiver (FlightAware customization)…
Sep 17 17:00:11 raspberrypi dump1090-fa[6775]: rtlsdr: enabling tuner AGC
Sep 17 17:00:11 raspberrypi systemd[1]: Stopping skyaware978 ADS-B UAT web display…
Sep 17 17:00:11 raspberrypi dump978-fa[6599]: [::1]:36764: connection closed
Sep 17 17:00:11 raspberrypi systemd[1]: skyaware978.service: Main process exited, code=killed, status=15/TERM
Sep 17 17:00:11 raspberrypi systemd[1]: skyaware978.service: Succeeded.
Sep 17 17:00:11 raspberrypi systemd[1]: Stopped skyaware978 ADS-B UAT web display.
Sep 17 17:00:11 raspberrypi systemd[1]: Started skyaware978 ADS-B UAT web display.
Sep 17 17:00:11 raspberrypi skyaware978[6847]: Connecting to localhost:30978
Sep 17 17:00:11 raspberrypi skyaware978[6847]: Connected to [::1]:30978
Sep 17 17:00:11 raspberrypi dump978-fa[6599]: [::]:30978: accepted a connection from [::1]:36766
Sep 17 17:00:12 raspberrypi dump1090-fa[6775]: Allocating 4 zero-copy buffers
Sep 17 17:00:12 raspberrypi dump1090-fa[6775]: Thu Sep 17 17:00:12 2020 KST Waiting for receive thread termination
Sep 17 17:00:12 raspberrypi systemd[1]: Stopping skyaware978 ADS-B UAT web display…
Sep 17 17:00:12 raspberrypi systemd[1]: skyaware978.service: Main process exited, code=killed, status=15/TERM
Sep 17 17:00:12 raspberrypi dump978-fa[6599]: [::1]:36766: connection closed
Sep 17 17:00:12 raspberrypi systemd[1]: skyaware978.service: Succeeded.
Sep 17 17:00:12 raspberrypi systemd[1]: Stopped skyaware978 ADS-B UAT web display.
Sep 17 17:00:12 raspberrypi systemd[1]: Started skyaware978 ADS-B UAT web display.
Sep 17 17:00:12 raspberrypi skyaware978[6893]: Connecting to localhost:30978
Sep 17 17:00:12 raspberrypi skyaware978[6893]: Connected to [::1]:30978
Sep 17 17:00:12 raspberrypi dump978-fa[6599]: [::]:30978: accepted a connection from [::1]:36768
Sep 17 17:00:12 raspberrypi systemd[1]: Stopping skyaware978 ADS-B UAT web display…
Sep 17 17:00:12 raspberrypi dump978-fa[6599]: [::1]:36768: connection closed
Sep 17 17:00:12 raspberrypi systemd[1]: skyaware978.service: Main process exited, code=killed, status=15/TERM
Sep 17 17:00:12 raspberrypi systemd[1]: skyaware978.service: Succeeded.
Sep 17 17:00:12 raspberrypi systemd[1]: Stopped skyaware978 ADS-B UAT web display.
Sep 17 17:00:12 raspberrypi systemd[1]: Started skyaware978 ADS-B UAT web display.
Sep 17 17:00:12 raspberrypi skyaware978[6936]: Connecting to localhost:30978
Sep 17 17:00:12 raspberrypi skyaware978[6936]: Connected to [::1]:30978
Sep 17 17:00:12 raspberrypi dump978-fa[6599]: [::]:30978: accepted a connection from [::1]:36770
Sep 17 17:00:13 raspberrypi dump1090-fa[6775]: Thu Sep 17 17:00:13 2020 KST Normal exit.
Sep 17 17:00:13 raspberrypi systemd[1]: dump1090-fa.service: Succeeded.
Sep 17 17:00:13 raspberrypi systemd[1]: Stopped dump1090 ADS-B receiver (FlightAware customization).
Sep 17 17:00:13 raspberrypi systemd[1]: Started dump1090 ADS-B receiver (FlightAware customization).
Sep 17 17:00:13 raspberrypi dump1090-fa[6955]: Thu Sep 17 17:00:13 2020 KST dump1090-fa 3.8.1 starting up.
Sep 17 17:00:13 raspberrypi dump1090-fa[6955]: Thu Sep 17 17:00:13 2020 KST Caught SIGTERM, shutting down…
Sep 17 17:00:13 raspberrypi systemd[1]: Stopping dump1090 ADS-B receiver (FlightAware customization)…
Sep 17 17:00:13 raspberrypi dump1090-fa[6955]: rtlsdr: using device #0: Generic RTL2832U (Realtek, RTL2832U, SN 00001090)
Sep 17 17:00:13 raspberrypi systemd[1]: Stopping skyaware978 ADS-B UAT web display…
Sep 17 17:00:13 raspberrypi dump978-fa[6599]: [::1]:36770: connection closed
Sep 17 17:00:13 raspberrypi systemd[1]: skyaware978.service: Main process exited, code=killed, status=15/TERM
Sep 17 17:00:13 raspberrypi systemd[1]: skyaware978.service: Succeeded.
Sep 17 17:00:13 raspberrypi systemd[1]: Stopped skyaware978 ADS-B UAT web display.
Sep 17 17:00:13 raspberrypi systemd[1]: skyaware978.service: Start request repeated too quickly.
Sep 17 17:00:13 raspberrypi systemd[1]: skyaware978.service: Failed with result ‘start-limit-hit’.
Sep 17 17:00:13 raspberrypi systemd[1]: Failed to start skyaware978 ADS-B UAT web display.
Sep 17 17:00:13 raspberrypi dump1090-fa[6955]: Found Rafael Micro R820T tuner
Sep 17 17:00:13 raspberrypi dump1090-fa[6955]: rtlsdr: enabling tuner AGC
Sep 17 17:00:13 raspberrypi dump1090-fa[6955]: Thu Sep 17 17:00:13 2020 KST Waiting for receive thread termination
Sep 17 17:00:13 raspberrypi dump1090-fa[6955]: Allocating 4 zero-copy buffers
Sep 17 17:00:14 raspberrypi dump1090-fa[6955]: Thu Sep 17 17:00:14 2020 KST Normal exit.
Sep 17 17:00:14 raspberrypi systemd[1]: dump1090-fa.service: Succeeded.
Sep 17 17:00:14 raspberrypi systemd[1]: Stopped dump1090 ADS-B receiver (FlightAware customization).
Sep 17 17:00:15 raspberrypi systemd[1]: Started dump1090 ADS-B receiver (FlightAware customization).
Sep 17 17:00:15 raspberrypi dump1090-fa[7118]: Thu Sep 17 17:00:15 2020 KST dump1090-fa 3.8.1 starting up.
Sep 17 17:00:15 raspberrypi dump1090-fa[7118]: rtlsdr: using device #0: Generic RTL2832U (Realtek, RTL2832U, SN 00001090)
Sep 17 17:00:15 raspberrypi dump1090-fa[7118]: Thu Sep 17 17:00:15 2020 KST Caught SIGTERM, shutting down…
Sep 17 17:00:15 raspberrypi systemd[1]: Stopping dump1090 ADS-B receiver (FlightAware customization)…
Sep 17 17:00:15 raspberrypi dump1090-fa[7118]: Found Rafael Micro R820T tuner
Sep 17 17:00:15 raspberrypi dump1090-fa[7118]: rtlsdr: enabling tuner AGC
Sep 17 17:00:15 raspberrypi dump1090-fa[7118]: Thu Sep 17 17:00:15 2020 KST Waiting for receive thread termination
Sep 17 17:00:15 raspberrypi dump1090-fa[7118]: Allocating 4 zero-copy buffers
Sep 17 17:00:16 raspberrypi dump1090-fa[7118]: Thu Sep 17 17:00:16 2020 KST Normal exit.
Sep 17 17:00:16 raspberrypi systemd[1]: dump1090-fa.service: Succeeded.
Sep 17 17:00:16 raspberrypi systemd[1]: Stopped dump1090 ADS-B receiver (FlightAware customization).
Sep 17 17:00:16 raspberrypi systemd[1]: Started dump1090 ADS-B receiver (FlightAware customization).
Sep 17 17:00:16 raspberrypi dump1090-fa[7253]: Thu Sep 17 17:00:16 2020 KST dump1090-fa 3.8.1 starting up.
Sep 17 17:00:16 raspberrypi dump1090-fa[7253]: rtlsdr: using device #0: Generic RTL2832U (Realtek, RTL2832U, SN 00001090)
Sep 17 17:00:17 raspberrypi dump1090-fa[7253]: Found Rafael Micro R820T tuner
Sep 17 17:00:17 raspberrypi dump1090-fa[7253]: rtlsdr: enabling tuner AGC
Sep 17 17:00:17 raspberrypi dump1090-fa[7253]: Allocating 4 zero-copy buffers

7

Yeah, that’s a problem (and the likely cause of dump1090/dump978 losing the USB devices seen in the logs you provided).

They are probably not real data. dump978 will pick up a low rate of bad messages just from noise.

edit: Here is an example of a message logged by your UAT receiver:

addrtype	adsb_icao
airGround	A+
alt			39125
clock		1600331733
hexid		E8E114
position	{-39.45032 46.98522 8 186}
speed		3090
track		329.3
vrate_geom	2880

This is basically garbage data (e.g. the position is far offshore in the Indian Ocean), it’ll just be noise being misinterpreted as a UAT message.

Hmm, I don’t understand why it is continuously restarting like this. What does /var/log/piaware.log look like? Do you have anything else installed that might want to restart dump978/skyaware978?

edit: looking at the piaware log messages forwarded to the FA servers, it looks like your GPS module is reporting a large change in position, which causes skyaware et al to be restarted

8

garbage data too bad :frowning:

You’re right. There were a lot of gpsd reported locations in the log…

im going to try reinstalling the OS first.

/var/log/piaware.log

Sep 17 20:10:34 raspberrypi piaware[660]: gpsd reported location: 36.35824, 127.43715, 116m (WGS84)
Sep 17 20:10:35 raspberrypi piaware[660]: gpsd reported location: 36.35824, 127.43715, 116m (WGS84)
Sep 17 20:10:36 raspberrypi piaware[660]: gpsd reported location: 36.35825, 127.43715, 116m (WGS84)
Sep 17 20:10:37 raspberrypi piaware[660]: gpsd reported location: 36.35826, 127.43714, 116m (WGS84)
Sep 17 20:10:38 raspberrypi piaware[660]: gpsd reported location: 36.35827, 127.43714, 116m (WGS84)
Sep 17 20:10:43 raspberrypi piaware[660]: gpsd reported location: 36.35826, 127.43712, 116m (WGS84)
Sep 17 20:10:44 raspberrypi piaware[660]: gpsd reported location: 36.35826, 127.43713, 116m (WGS84)
Sep 17 20:10:45 raspberrypi piaware[660]: gpsd reported location: 36.35825, 127.43714, 116m (WGS84)
Sep 17 20:10:46 raspberrypi piaware[660]: gpsd reported location: 36.35825, 127.43714, 117m (WGS84)
Sep 17 20:10:47 raspberrypi piaware[660]: gpsd reported location: 36.35824, 127.43714, 117m (WGS84)
Sep 17 20:10:48 raspberrypi piaware[660]: gpsd reported location: 36.35824, 127.43715, 117m (WGS84)
Sep 17 20:10:49 raspberrypi piaware[660]: gpsd reported location: 36.35823, 127.43716, 117m (WGS84)
Sep 17 20:10:53 raspberrypi piaware[660]: gpsd reported location: 36.35818, 127.43730, 115m (WGS84)
Sep 17 20:10:54 raspberrypi piaware[660]: gpsd reported location: 36.35818, 127.43731, 114m (WGS84)
Sep 17 20:10:58 raspberrypi piaware[660]: gpsd reported location: 36.35817, 127.43731, 114m (WGS84)
Sep 17 20:11:10 raspberrypi piaware[660]: gpsd reported location: 36.35832, 127.43715, 109m (WGS84)
Sep 17 20:11:20 raspberrypi piaware[660]: gpsd reported location: 36.35825, 127.43721, 109m (WGS84)
Sep 17 20:11:21 raspberrypi piaware[660]: gpsd reported location: 36.35815, 127.43730, 109m (WGS84)
Sep 17 20:11:22 raspberrypi piaware[660]: gpsd reported location: 36.35817, 127.43729, 109m (WGS84)
Sep 17 20:11:23 raspberrypi piaware[660]: gpsd reported location: 36.35817, 127.43730, 109m (WGS84)
Sep 17 20:11:26 raspberrypi piaware[660]: gpsd reported location: 36.35819, 127.43729, 109m (WGS84)
Sep 17 20:11:27 raspberrypi piaware[660]: gpsd reported location: 36.35822, 127.43726, 108m (WGS84)
Sep 17 20:11:30 raspberrypi piaware[660]: gpsd reported location: 36.35823, 127.43726, 108m (WGS84)
Sep 17 20:11:31 raspberrypi piaware[660]: gpsd reported location: 36.35823, 127.43725, 108m (WGS84)
Sep 17 20:11:32 raspberrypi piaware[660]: gpsd reported location: 36.35823, 127.43725, 108m (WGS84)
Sep 17 20:11:33 raspberrypi piaware[660]: gpsd reported location: 36.35824, 127.43724, 108m (WGS84)
Sep 17 20:11:40 raspberrypi piaware[660]: gpsd reported location: 36.35812, 127.43735, 128m (WGS84)
Sep 17 20:11:41 raspberrypi piaware[660]: gpsd reported location: 36.35814, 127.43733, 127m (WGS84)
Sep 17 20:11:42 raspberrypi piaware[660]: gpsd reported location: 36.35815, 127.43733, 126m (WGS84)
Sep 17 20:11:43 raspberrypi piaware[660]: gpsd reported location: 36.35816, 127.43731, 126m (WGS84)
Sep 17 20:11:44 raspberrypi piaware[660]: gpsd reported location: 36.35817, 127.43731, 125m (WGS84)
Sep 17 20:11:45 raspberrypi piaware[660]: gpsd reported location: 36.35818, 127.43729, 124m (WGS84)
Sep 17 20:11:46 raspberrypi piaware[660]: gpsd reported location: 36.35817, 127.43728, 124m (WGS84)
Sep 17 20:11:47 raspberrypi piaware[660]: gpsd reported location: 36.35818, 127.43728, 124m (WGS84)
Sep 17 20:11:48 raspberrypi piaware[660]: gpsd reported location: 36.35817, 127.43728, 123m (WGS84)
Sep 17 20:11:49 raspberrypi piaware[660]: gpsd reported location: 36.35818, 127.43728, 123m (WGS84)
Sep 17 20:11:50 raspberrypi piaware[660]: gpsd reported location: 36.35819, 127.43726, 123m (WGS84)
Sep 17 20:11:51 raspberrypi piaware[660]: gpsd reported location: 36.35818, 127.43726, 122m (WGS84)
Sep 17 20:11:52 raspberrypi piaware[660]: gpsd reported location: 36.35817, 127.43727, 122m (WGS84)
Sep 17 20:11:53 raspberrypi piaware[660]: gpsd reported location: 36.35817, 127.43727, 122m (WGS84)
Sep 17 20:11:54 raspberrypi piaware[660]: gpsd reported location: 36.35817, 127.43727, 122m (WGS84)
Sep 17 20:11:55 raspberrypi piaware[660]: gpsd reported location: 36.35818, 127.43726, 122m (WGS84)

9

@youyounggeun,
Your location (gpsd reported location: 36.35818, 127.43726, 122m) would suggest a location that UAT978 is not used. It is odd that you seem to be receiving traffic.

10

The little jumps in position don’t matter so much, piaware won’t restart anything for a small change in location. I did see some bigger jumps (a few km) which I think were what triggered the restarts.

I created a ticket to see if we can do something smarter here (perhaps rate-limit how often we consider restarting things on location change)

It’s most probably just noise, see earlier comments.

11

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