If you already had multiple keyboards associated with the machine then this sounds like bug 1777708. Please try removing all but one keyboard from the system.
** Package changed: xorg (Ubuntu) => mutter (Ubuntu) ** Changed in: mutter (Ubuntu) Status: New => Incomplete ** Summary changed: - Xorg freeze + Keyboard hanging when long press SHIFT -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/2051194 Title: Keyboard hanging when long press SHIFT To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kwin/+bug/2051194/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp