I compared my (messy but working) Xorg.conf to Xorg.conf.failsafe The key difference appears to be this one:
InputDevice "Configured Mouse" "CorePointer" (working) vs InputDevice "Configured Mouse" (failsafe) -- single click is considered as double click https://bugs.launchpad.net/bugs/196711 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs