[klazutin]

I've also switched from a MacBook to a T14 Gen 1 about a year ago and the TrackPoint is the one problem I struggle with on Linux.

On Windows, it's buttery smooth and a joy to use. On Linux, the refresh rate tops out at 80 Hz, and if you so much as lightly touch the touchpad with your palm, it goes further down to ~45 Hz for the next few seconds. All of this makes for a very rough, jerky and imprecise movement.

I really want to use Linux on my T14, but this problem just makes the experience a pain. I really wonder if everybody recommending using TrackPoint and running Linux have somehow solved this issue?

[bhaak]

I don't use the trackpad at all so I don't have that problem. :)

You could try playing around with the settings in /sys/devices/platform/i8042/serio1/. The file "sensitivity" or "rate" might be what you're looking for.

[klazutin]

Sadly, I've tried it all. It seems that the 80Hz cap is enforced by the kernel PS/2 driver, for whatever reason, and is shared between the touchpad and the TrackPoint since they are on the same bus. I can only imagine drivers under Windows employ some proprietary trickery to get around that limitation.