What is SpaceFN and why you should give it a try
The SpaceFN concept - setting up your space key as a layer switch when held - is probably one of the most useful tweaks in the keyboard hobby. Let me explain how it works. My SpaceFN article on kbd.news made some rounds recently - quite surprisingly given the age of this concept. This piece you're reading is a condensed version of the full post. If you're left with unanswered questions, you'll most likely find the info you're looking for in the original write-up. On my imaginary top list of the most useful keyboard features, tweaks and hacks, SpaceFN would deserve a podium finish for sure. But what makes it so special? In short: SpaceFN is easy to implement, easy to learn, costs nothing, can be used with any keyboard, and can improve your productivity instantly. I will list its benefits below, but can state right at this point that the SpaceFN concept, setting up your space key as a layer switch when held, is clearly one of the most useful tweaks in the keyboard hobby....
Apr 30, 2024
I've seen various explanations of this issue -- the one that I believe is that the firmware gets confused about where the center is, and you have to let go of it so that it can re-center correctly. However I don't fully understand how this explains my problem, which comes in spates, three or four times in a given minute, then it works fine for several minutes.
Anyway, I wonder if just replacing the trackpoint module might be my best best.
By the way I am using the keyboard with Linux Mint, and found this setting to reduce the sensitivity -- it was close to ideal with this setting until the drift problem got so bad.
$ xinput --set-prop "SONiX USB Device" "Device Accel Constant Deceleration" 3.5