reboot and use previous kernel?
Tried that, same result.
rescue shell?
grub? Maybe, I haven't had much experience with it, I've only used linux for about a 1 year now.
I've renamed my kde4 folder (I'm using KDE 5 plasma...don't know why it's named kde4) and rebooted into latest kernel. At login screen and now it works. Hopefully it stays that way...maybe not :D