Package: xserver-xfree86 Version: 4.2.1-14 Severity: wishlist File: /usr/share/doc/xserver-xfree86/README.mouse.gz $ man XF86Config-4 says "This can be used, for example, to allow an additional pointer device to generate core pointer events (like moving the cursor, etc)." Add an example to this file or the man page to show how, as it seems impossible, see article <[🔎] 87ad45p1cr.fsf@jidanni.org> .