I also have this bug with Lubuntu 16.04 LTS 64-bit fresh install on a Samsung N210.
Alt+Ctrl+F1 -> Alt+Ctrl+F7 "solves" temporarily
I also have this bug with Lubuntu 16.04 LTS 64-bit fresh install on a Samsung N210.
Alt+Ctrl+F1 -> Alt+Ctrl+F7 "solves" temporarily