Citando richard lucassen via Dng <dng@???>:

> No, even cronjobs do not work or give segmentation fault. It must be
> the hardware. There must be a batch with these issues, I'm not the only
> one BTW. I wonder if it has got something to do with the wifi chip. A
> crash occurs earlier if you load the kernel module.
>  

That seems to be some problem with the rtc oscillator or so..hardware
probably( I got a problem with my rpiv2 with its 26Mhz oscillator, its
similar in nature with what you describe..
 
> The ASCII image is ok, but I updated this image to Beowulf and I used
> Armbian kernel with it. But I fear it will crash again. Anyway, I just
> got some Rasberry Pi Zero-W now and I think I will stay with these
> boards. Remember I have also Orange Pi PC, different CPU, suffering
> from the same issues.

The devuan images are tested,
And so, I personally, advise always to stick with its kernels, but
anyone is free to mix what they want too :)

That in so many boards,... it could be a batch that went wrong, or
badly designed boards..