I had a similar behavior when I changed my HDD and installed a fast SSD for Xubuntu 16.04. I can use buttons, and dropdowns with no issues. It happens with unity and webkit greeters. Seems you need to wait at least 10-15 seconds before all the services are effectively up and running. Nothing suspicious on logs.
-- You received this bug notification because you are a member of LightDM Gtk+ Greeter Development Team, which is subscribed to lightdm-gtk- greeter in Ubuntu. https://bugs.launchpad.net/bugs/1495332 Title: 15.10: No keyboard input on startup Status in lightdm-gtk-greeter package in Ubuntu: Triaged Bug description: Installed via using lubuntu-desktop. kubuntu-desktop also installed. When the greeter first starts there is no keyboard input. It won't even accept Ctrl+Alt+F1 to switch to VT tty1. If the mouse pointer is moved around the focus indicator follows it; hover over the Password box and its focus indication is shown and the pointer changes to a caret but no keyboard input is accepted. User has to use the mouse to click on a button, drop-down combo, or applet icon in the task-bar to gain keyboard input. There are no indications in the lightdm logs of a greeter input issue. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm-gtk-greeter/+bug/1495332/+subscriptions -- Mailing list: https://launchpad.net/~lightdm-gtk-greeter-team Post to : [email protected] Unsubscribe : https://launchpad.net/~lightdm-gtk-greeter-team More help : https://help.launchpad.net/ListHelp
