I have updated a fresh nice well performing lubuntu 16.04 on a LG x110 PC.
And the screen went bad just like this example.
I think it must be a newer Linux kernel or some thing alike. It would be nice to have update alerts just as Linux mint does.
I have tried to install the newest lubuntu 17 but this version messes it up from the very beginning. Maybe it could be a screen driver. Does any one know which update to avoid?