I own a Pi4 (4GB), and I'm having some issues. The pi crashes with no apparent reason.
By crashes I mean it becomes unreacheable via ssh, PiHole and HomeAssistant that are running on it become unaccessible, and pugging in a monitor just gives "No signal - check cable". The only thing that keeps running is the 5V fan on it.
I understand that the answer should be in /var/log/kern.log but I don't find anything of notice in there at all.
What do I do to troubleshoot this?
Some things I found googling:
- Power supply: I am using an official Pi4 5.1V 3A power supply.
- Too many reads to low quality SD card: 64Gb samsung high quality sd card, and only pihole and HomeAssistant running.
I don't want to blindly replace parts, so what next? Rebooting makes it work just fine, but it crashes again at about the same time every day, in the morning.