Your Thinkpad X230 has Intel HD Graphics 4000, and I think you're experiencing the same intel graphics bug (or intel graphics + lightdm bug) being reported elsewhere.
I have the same problem in Ubuntu 16.04.1 with Intel graphics and lightdm. Take a look at the following bug reports, they may be related/duplicates: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/1568604 https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1531224 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1563781 Title: Flickering and invisible mouse pointer after wakeup from suspend To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1563781/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs