Thank you everyone for the greetings and advice.
After reading everything (nearly) I abandoned LM16 and tried LM13 Mate.
Ran into the slideshow problem and tried the fix.
Install crashed, disgorging a half screen of error message starting "Can not handle kernel NULL" or something like that.
Briefly lost will to live.
Will try something else later in the week.
And so I remain,
Not Really a Linux User Yet
A microscopic cog in a catastrophic plan.