My touchpad and mouse buttons freeze whenever I login, making my system basically unusable. My keyboard still works fine, I can access terminal, etc. If I logout with Ctrl+Alt+Del, my mouse cursor comes back and works fine, but as soon as I log back in it freezes again. Sometimes it just freezes, other times it also becomes invisible.
I'm using Ubuntu 16.04 on a Dell Inspiron. This problem did not occur when I updated or anything, the mouse cursor just stopped moving while I was browsing the internet and has been dysfunctional ever since. If I use the wireless mouse it responds, but not with the touchpad.
Rebooting does not help, neither did
sudo modprobe -r psmouse; sudo modprobe psmouse