Perhaps this is somehow related to the convertible lid hinge. Ordinarily when the laptop is in "tablet" mode (hinge open > 180 degrees), the keyboard and touchpad are disabled. Even more reliably than using an external device, switching into and then back out of tablet mode by opening/closing the hinge seems to restore keyboard/touchpad functionality. Not sure why they appear to work until the gdm screen though, or why sometimes using an external device causes them to work again.
-- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1822394 Title: [Dell XPS 15 9575] laptop keyboard & touchpad not working at gdm screen after boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1822394/+subscriptions -- desktop-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
