So i've been running Ubuntu 18.04 from a Live USB recently. I noticed that whenever I was in Ubuntu the screen sometimes randomly flickered at the corners a bit, but then eventually stopped. The problem never happened in Windows.
Today while working in Ubuntu the flicker became very strong. I shut down the system and booted back into Windows but noticed that now the flicker remained, and what's more the Ubuntu desktop was burned into my LCD screen.
I have a Geforce 1080TI Graphics card and a Philips 278C4 monitor, with HDMI connection.
So the question is what could have done this? I have an identical monitor which I can use for now, but am afraid to boot back into Ubuntu to get my files out in case the issue happens again. Secondly, is my monitor destroyed now? I've powered it off and will try it again in a day or so.
My first guess is that Ubuntu set my LCD to an unsupported refresh rate which caused issues?