Tim Riker,  Try this:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1800022/comments/17 "It was about nvidia drivers, I've reinstalled 'em and everything working as before."
Best regards, -- Cristian
Tim Riker,

Try this:
https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1800022/ comments/ 17
"It was about nvidia drivers, I've reinstalled 'em and everything working
as before."
Best regards,
--
Cristian