on ubuntu if you press Ctrl Alt H ( on the older < 20 versions of ubuntu in which the hotkeys still work with this application) if you leaving history showing at a point where the computer tries to lock (perhaps through inactivity timeout) then it will block the locking of the computer, which fails.
on ubuntu if you press Ctrl Alt H ( on the older < 20 versions of ubuntu in which the hotkeys still work with this application) if you leaving history showing at a point where the computer tries to lock (perhaps through inactivity timeout) then it will block the locking of the computer, which fails.