For me I downgraded just the kernel back to 4.16 and the mouse is back behaving normally. This is in Virtualbox on MacOS. The first left click worked to launch either the launch menu or one of the pinned programs. After that the mouse pointer would move but no more left click would work. Big From: Radu via arch-generalmailto:arch-general@archlinux.org I'm running Arch in VBox under Windows and I'm getting similar behavior since I've upgraded xorg-server, xorg-server-common, libinput. I had updated the kernel in a previous step and I don't remember seeing this behavior after upgrading just the kernel (and not xorg-server). I've logged lipinput generated events and they seem ok (all mouse activity is captured by the kernel/libinput driver). However, testing the xorg events (xev) seems consistent with X behavior: no events comming to X from libinp. Another thing: my keyboard input also got stuck for a couple of times. Therefore, maybe we should log a xorg-server bug? P.S.: One partial workaround (making the left-click work): find a region/window where the right-click works and right-click. After that you have a chance of getting the left-click working for a limited (single?) left-click event.