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 Ubuntu Desktop Bugs, which is subscribed to gdm in Ubuntu. https://bugs.launchpad.net/bugs/1247388 Title: Mouse cursor disapear / mouse stops working, when switching user To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm/+bug/1247388/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs