I have an ASUS ZenBook Flip UX360CA notebook running a dual boot of Windows 10 and Ubuntu 16.04. I'm a noob at Ubuntu, but I have been using it for a while now, maybe 6 months now. I haven't had any major problems until today when my mouse cursor stopped working. It would sometimes disappear form the screen and sometimes freeze up, but regardless it was unresponsive when I tried to use the touchpad.
I saw a suggestion to install gdm and I rebooted with gdm, but Ubuntu didn't even start up with gdm. So now I'm posting this from my Windows part of my dual install, and thank God I have touchscreen on my laptop. It really sucks though since I had all of my projects and such on Ubuntu.
Here's the thing though, my cursor doesn't even work on Windows now either. It turns out the touchpad doesn't work since the cursor reappears when I connect a mouse. However I can't seem to reboot into Ubuntu anymore after I changed lightdm into gdm. All I'm getting is a purple/black screen on startup.