Mouse pointer freezing at left edge of screen in 16.10
Solution 1:
I was experiencing some problems with my pointer as well. In my case, the pointer is there, but is not working properly, since it needs to be not on the link/folder/file... but above it.
It the past, trying to look for info about this issue, I discovered that many other users upgrading to ubuntu 16.10, started to experience an issue with the mouse pointer disappearing, which also happened to me sometimes.
I read in this Ubuntu Forums post that resetting unity settings would help
Install unity-tweak-tool
sudo apt-get install unity-tweak-tool
Then do a reset via:
unity-tweak-tool --reset-unity
It worked for me, and my pointer stopped disappearing.