Comment # 6 on bug 1206767 from Dave Plater

(In reply to Larry Finger from comment #5)
> Do you have access to another Linux computer? If so, then netconsole is a
> way to get the dmesg log dumped when there is a crash.
> 
> The procedure is somewhat involved, thus I will await your positive answer
> before writing it out.

I've a leap 15.4 pc with a Tumbleweed partition I've got an old fashioned DB7
serial socket on the back and a raspberry pi 3b which is most probably better
than the pc.
The instruction will be good for me. The most primitive interface on the laptop
is ethernet no serial and I've mislaid my usb serial dongle.

I found the point of sleep in the journal but there's no wake up message even
though the screen from pre sleep displays.