Where to configure syndaemon settings?

As Rinzwind already pointed out, these settings are hardcoded in unity-settings-daemon:

https://bazaar.launchpad.net/~ubuntu-branches/ubuntu/vivid/unity-settings-daemon/vivid/view/head:/plugins/mouse/gsd-mouse-manager.c

As a workaround, rename syndaemon to syndaemon.orig

mv /usr/bin/syndaemon /usr/bin/syndaemon.orig

and create a script syndaemon that just calls the original binary with the correct parameters:

cat << EOF > /usr/bin/syndaemon
#!/bin/bash
/usr/bin/syndaemon.orig -K -R -i0.5
EOF

Make it executable with

chmod +x /usr/bin/syndaemon

Dash -> Startup Applications

• Add
• Give it a name and put the command in for the script you need:

Reason for this ... there is not config file and those settings are hard coded.