Hi, everyone!
I own a Rock Pi 4B+ with Ubuntu Focal Server 4.4.154-113 image installed. This morning the system spontaneously rebooted. I checked journalcontrol with following output:
Jan 14 07:27:47 nihanxki02 kernel: [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:e0:69:ba:ac:cd:02:08:00 SRC=172.18.4.210 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0
xC0 TTL=1 ID=4506 PROTO=2
Jan 14 07:28:47 nihanxki02 kernel: [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:e0:69:ba:ac:cd:02:08:00 SRC=172.18.4.210 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0
xC0 TTL=1 ID=5275 PROTO=2
– Reboot –
Jan 14 08:34:27 nihanxki02 systemd[1]: Starting Daily apt download activities…
Jan 14 08:34:27 nihanxki02 systemd[1]: Starting Online ext4 Metadata Check for All Filesystems…
Jan 14 08:34:27 nihanxki02 systemd[1]: Starting Discard unused blocks on filesystems from /etc/fstab…
Jan 14 08:34:27 nihanxki02 systemd[1]: Starting Message of the Day…
I try to somehow find the reason for the reboot. Are there any more logs that I could check?
CPU temperature looks normal (33 Degrees Celsius). CPU Usage is under normal conditions 96% idle.
There is no HDMI Monitor connected; the Rock PI is used at a remote location. The only task it does is running a self-written interface software for xkeys keyboards. There is no GUI installed, only Ubuntu Focal Server (Command Line only).
As power supply I use an original Raspberry 4 USB-C Power supply, 5.1V 3.0A.
Any hints are appreciated!
Regards
Kai