Fixing the ThinkPad TrackPoint after suspend

There's a well-known bug with the ThinkPad X1 Carbon Gen 5-7 and similar models from that era: the driver doesn't properly initialize the hardware after a suspend. You can usually fix it by putting the computer to sleep again and logging back in. However, that's a shitty way to deal with a problem a simple script can solve. Like, really simple.

The script

#!/bin/sh

# Reinitialize the ThinkPad TrackPoint after suspend/resume.
case "$1" in
    post)
        /usr/sbin/modprobe -r psmouse || true
        /usr/bin/sleep 4
        /usr/sbin/modprobe psmouse
        /usr/bin/sleep 2
        ;;
esac

exit 0

That's all there is to it. It restarts the psmouse driver with a delay, and it's hooked into the systemd sleep-hook routine, so it runs after every resume.

Windows

When I used Windows a few years ago, I ended up doing the same thing with PowerShell and a scheduled task that runs on logon.