Complete system freeze during print, happening randomly

Hi,

I have the CB1 on a Manta M8P board. Sometimes I can print perfectly fine, but sometimes during longer prints the printer stops and the system completely freezes. I cannot use the display, and network connectivity is also gone.

First I thought it is due to high temperatures, so I added a cooling fan to the board. CB1 board temperature during print is 58°C.
Then I thought it is due to WiFi driver issues, so I disabled WiFi and instead used the LAN connection. But the freeze still happens.

In the logs (syslog, kern.log) I don't see any messages from before the freeze, so I cannot debug the problem further.

I would appreciate any help or ideas on how to solve it or where the issue could be.

Thanks!

# System information:
- Voron 2.4 printer
- CB1 firmware version: v3.0.0-25.02.0-trunk rolling
- Kernel: 6.6.66-vendor-sunxi64

Start by reviewing the reported syslog and kern.log behavior alongside the CB1 firmware version and 6.6.66-vendor-sunxi64 kernel details. Reproduce the freeze during a longer print with WiFi disabled and LAN connected; done means identifying a reproducible cause and a verified way to prevent the complete system, display, and network freeze.

Written by the indexing model from the issue text.