[xubuntu-users] Loosing contact between PC and monitor?

[Gérald Jean]

Hello,


I am running Xubuntu 18.04 LTS on an AMD-8350.  Usually runs good with 
little problem.  But since yesterday the screen went black two times on 
me with the sign «No signal».  I tried to plug the PC into the TV 
through an HDMI cable, same thing: «No signal». Further more I can't 
even turn the computer off, it won't turn off, I have to pull the plug 
from the wall?


Any idea of what is going on?  It scares me, the computer is only a few 
years old and, until now, I'm happy with it.


Thanks for any insight,


Gérald