On Ubuntu 16.04 the display has become to big for the screen
This seems not to be adjustable from settings (lower or higher resolution 9:6 - still keeps overscreen.)
"Monitor setting" from Ubuntu Software can make it smaller, but it distorts the proportions making the display too wide
Changing monitors and playing with the monitor's resolution didn't help.
On Ubuntu 14.04 I had old software for Radeon v/cards that was OK on resolution 1750x.... (but now no choice of software) I cannot see the clock or icons.