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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

  • Your touchpad is defective. Itśhardware, nothing to do with Ubuntu. – user589808 Jan 21 '17 at 1:42
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    If the touchpad is defective, how come it works on the login screen? – TheQuestion Jan 21 '17 at 22:14
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    Welcome to Ask Ubuntu1 ;-)* Does it work in the guest session??? – Fabby Jan 22 '17 at 19:48
  • Good question! I just checked and it actually does work in the guest session! – TheQuestion Jan 23 '17 at 6:02
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Try removing the ~/.config/dconf/user file. I had the same problem, and this is what solved it.

I haven't yet figured out which specific setting caused the problem, but you can use the information in this answer to dump the settings and reload them selectively: https://unix.stackexchange.com/questions/199836/how-can-i-view-the-content-of-a-backup-of-the-dconf-database-file

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