[x86-64] Crashes overnight

    I was unhappy with the performance of my Raspberry Pi 4 running LibreELEC, so I switched my HTPC to a ThinkCentre M720q. While the performance is much improved, it will crash overnight if left alone.

    The setup is: Computer (with USB CEC dongle) -> Marantz NR1604 receiver -> Sharp Aquos 4T-C70BK2UD TV. LibreELEC 12.2.1.

    Symptoms: No video output, no response to the keyboard, not connected to the network (it's on WiFi). When I turn the TV on, it calls the input "CEC Adapter" instead of Kodi.

    The crash seems to be time-based. I typically watch stuff in the evenings, if I turn it off around 9pm, then try turning it on the next day around 6-7pm, it will always be non-responsive. As an experiment, I turned the TV on the next morning; it was fine.

    I left a SSH session logged into it and tailing the logs the last time it crashed, but there was nothing helpful. It seems like it was only application logs, is there some way to get kernel logs out of this thing?

    You can enable persistent logging in the LE settings add-on. Then you can do journalctl -b 1 | paste to pastebin the previous system log (current boot = 0, previous = 1, etc.). I'd be looking for Out Of Memory (OOM) issues and other kernel splats in the log.