I have a Pi 5 running rtl_433 as a service. It is the only thing running outside of a clean install of Raspian cli only version. It goes from working to only having the red led lit at some random interval. The other day it was around 4 hours and then another time it was within 40 minutes.
There is a NooElec nesdr smart plugged into a usb port and it is using a Pi wall wart to power it. Before each shutdown I do get a random under voltage which recovers within 2 to 4 seconds when I monitor journalctl. The wall wart is plugged in to a UPS so it isn't an AC power issue.
In order to get it running again, I have to push the button next to the LED's and it appears to be a full reboot. Like it powered itself off and not a clean shutdown.
Any ideas?
Snippets of journalctl logs just before the Pi, I think as I have not witnessed exactly when the accessibility ceases, move out of a running state.
There is a NooElec nesdr smart plugged into a usb port and it is using a Pi wall wart to power it. Before each shutdown I do get a random under voltage which recovers within 2 to 4 seconds when I monitor journalctl. The wall wart is plugged in to a UPS so it isn't an AC power issue.
In order to get it running again, I have to push the button next to the LED's and it appears to be a full reboot. Like it powered itself off and not a clean shutdown.
Any ideas?
Snippets of journalctl logs just before the Pi, I think as I have not witnessed exactly when the accessibility ceases, move out of a running state.
Code:
Jun 26 08:17:01 raspberrypi CRON[3194]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)Jun 26 08:17:01 raspberrypi CRON[3195]: (root) CMD (cd / && run-parts --report /etc/cron.hourly)Jun 26 08:17:01 raspberrypi CRON[3194]: pam_unix(cron:session): session closed for user rootJun 26 09:17:01 raspberrypi CRON[4696]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)Jun 26 09:17:01 raspberrypi CRON[4697]: (root) CMD (cd / && run-parts --report /etc/cron.hourly)Jun 26 09:17:01 raspberrypi CRON[4696]: pam_unix(cron:session): session closed for user rootJun 26 10:17:01 raspberrypi CRON[6202]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)Jun 26 10:17:01 raspberrypi CRON[6203]: (root) CMD (cd / && run-parts --report /etc/cron.hourly)Jun 26 10:17:01 raspberrypi CRON[6202]: pam_unix(cron:session): session closed for user rootJun 26 11:17:01 raspberrypi CRON[7708]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)Jun 26 11:17:01 raspberrypi CRON[7709]: (root) CMD (cd / && run-parts --report /etc/cron.hourly)Jun 26 11:17:01 raspberrypi CRON[7708]: pam_unix(cron:session): session closed for user rootJun 26 12:16:22 raspberrypi kernel: hwmon hwmon2: Undervoltage detected!Jun 26 12:16:24 raspberrypi kernel: hwmon hwmon2: Voltage normalisedJun 26 12:17:01 raspberrypi CRON[9218]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)Jun 26 12:17:01 raspberrypi CRON[9219]: (root) CMD (cd / && run-parts --report /etc/cron.hourly)Jun 26 12:17:01 raspberrypi CRON[9218]: pam_unix(cron:session): session closed for user rootJun 27 07:17:03 raspberrypi CRON[1328]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)Jun 27 07:17:03 raspberrypi CRON[1329]: (root) CMD (cd / && run-parts --report /etc/cron.hourly)Jun 27 07:17:03 raspberrypi CRON[1328]: pam_unix(cron:session): session closed for user rootJun 27 07:21:18 raspberrypi kernel: hwmon hwmon2: Undervoltage detected!Jun 27 07:21:22 raspberrypi kernel: hwmon hwmon2: Voltage normalisedJun 27 07:30:44 raspberrypi systemd[1]: Starting systemd-tmpfiles-clean.service - Cleanup of Temporary Directories...Jun 27 07:30:44 raspberrypi systemd[1]: systemd-tmpfiles-clean.service: Deactivated successfully.Jun 27 07:30:44 raspberrypi systemd[1]: Finished systemd-tmpfiles-clean.service - Cleanup of Temporary Directories.Jun 27 07:30:44 raspberrypi systemd[1]: run-credentials-systemd\x2dtmpfiles\x2dclean.service.mount: Deactivated successfully.Jun 27 07:39:44 raspberrypi systemd[1]: Starting apt-daily-upgrade.service - Daily apt upgrade and clean activities...Jun 27 07:39:45 raspberrypi systemd[1]: apt-daily-upgrade.service: Deactivated successfully.Jun 27 07:39:45 raspberrypi systemd[1]: Finished apt-daily-upgrade.service - Daily apt upgrade and clean activities.Statistics: Posted by ropeguru — Sat Jun 28, 2025 1:36 pm