Created attachment 852449 [details]
tty10 photo
photo of tty10 terminal at the instant of lock.
Machine does not progress and has to powered off hitting the button for several
seconds.
These two photos were taken a previous day to the event shown in the journal,
because the journal was not permanent, and syslog fails to record kernel
messages for some unknown reason(it worked months before, maybe on Leap 15.1).