So I'm having a problem after installing Ubuntu 14.04 on my HP Pavilion dv6-3160sp.
The problem is that after the booting to ubuntu the mouse/cursor simply vanishes, and also if I try like right click it doesn't do anything, so it's not "invisible" I think.
But when I was "Trying Ubuntu" before installing I didn't find any problem, the cursor was normal.
The iso that I'm using it's the official "ubuntu-14.04-desktop-amd64".
I tested with the touchpad and a normal mouse, with no results.
I tried to use the command:
gsettings set org.gnome.settings-daemon.plugins.cursor active false
but nothing worked.
I was having a similar problem after switching users. I was able to get the touch pad to work by reloading the kernel module: