Here is a user in Ask Ubuntu reporting what I think is the same bug: http://askubuntu.com/questions/459570/synaptics-touchpad-not-detected-while-switching-user-on-unity/516716 I also have that problem. When I switch to another user (like the guest session), the touchpad stops working. The two commands mentioned by the bug reporter enable the touchpad for that user but, of course, admin privileges are required.
I'm using an Acer laptop with a Synaptics touchpad, Ubuntu 14.04 and lightdm (not gdm). The bug doesn't affect my wireless mouse. Also, the symptoms change when I start the guest session though lightdm vs directly in the top right cog menu or when I disconnect my mouse before starting the guest session. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gdm in Ubuntu. https://bugs.launchpad.net/bugs/1247388 Title: Mouse cursor disapear / mouse stops working, when switching user Status in “gdm” package in Ubuntu: Confirmed Bug description: I have upgraded to Ubuntu 13.10 Gnome3 amd64, from Ubuntu 13.04 x86 where I used both Unity, KDE and Gnome, and in the old setup it worked fine. Now when I select switch user , I come out to the login screen and the mouse cursor is gone. Switching back to the first user the mouse is back. If the second user with no cursor runs: sudo modprobe -r psmouse sudo modprobe pmouse the mouse works again, but then it stops working for the first user. It could alse be that the cursor is still ther but it doesn't move. I run a Dell laptop with a Synaptics touchpad. What can I do to provide more information? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm/+bug/1247388/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp