My cursor disappears after suspending and then logging back in Lubuntu
I don't know why this happens, I tried default settings for the cursor, different theme, ... but with no result.
I found a temporary solution, by pressing Ctrl+Alt+F1, then pressing Ctrl+Alt+F7 the mouse re-appears.
I've found that, if you manage to place the invisible cursor over a text box, click on it and start typing, it re-appears instantly. I know where my cursor is because it highlights text boxes and other things when it passes over them, I don't know if you can see it.
I'm using Lubuntu 16.04.1 on a Samsung n210 netbook BTW.
sudo service lightdm restart
This may help you. After a time systemd learns and restarts it automatically. At least that's what a co-worker told me.