Strange screen

I installed lubuntu 16.04.3 LTS on a Acer Aspire One D250.
No problem but after update and reboot I get this screen :

The problem is not visible when I make a screenshot.
But if I suspend and get back, the problem disappears.
I tried to restart the graphical server, i installed the Intel graphics drivers, i updated the bios, and tried with Ubuntu and Xubuntu, but get the same problem.

What do you think i cna do ?
Thanks in advance.


I’ve moved this to the category because this site isn’t designed to take tech support questions. Sorry. I’d recommend using one of the official support channels listed on the page.