I've been juggling different mint editions as well as versions and I am almost ok with lm 13 cinnamon at the moment except occasional pain in the rear end When I shut down the machine, I get sometimes
and it stays that way, so I have to take the power off.
Why is this happening? I think it usually happens when I use HDMI cable for TV or when I play an online game with lower resolutions than laptop's max resolution. I tried sudo poweroff and another commands but to no avail.
Thanks in advance for any help.
edit: since image link does not seem to work...