Black screen when youtube goes fullscreen

[Hirador]

Sometimes, when a YouTube videeo is played via Chrome in full screen mode, everything goes black while the audio keeps going. i haven't verified if this happens also on local videos or in other browsers. When this happens, i have to close the screen so the pc will enter in sleep mode, after reopen everything comes back.

To try this out: After a fresh start, check this video here at minute 21 on full screen mode https://www.youtube.com/watch?v=1tQ5XwvjPmA

Any suggestions? Can you verify if the same happens to you?