You should also check your dmesg and /sys/kernel/debug/dri/0/i915_error_state when you ssh into it when it's down, in the case that the issue is a gpu lockup.
You should also check your dmesg and /sys/kernel/ debug/dri/ 0/i915_ error_state when you ssh into it when it's down, in the case that the issue is a gpu lockup.