I have installed Bookworm on an HP EliteBook 850 G1 and the trackpoint is unusably slow. The first thing that I notice is that the kernel is detecting the trackpoint as a "PS/2 Generic Mouse":
[62635.123626] input: PS/2 Generic Mouse as /devices/platform/i8042/serio2/input/input59 I have tried all 4 options for the psmouse module protocol parameter: sudo modprobe -r psmouse ; sudo modprobe psmouse protocol=bare sudo modprobe -r psmouse ; sudo modprobe psmouse protocol=imps sudo modprobe -r psmouse ; sudo modprobe psmouse protocol=exps sudo modprobe -r psmouse ; sudo modprobe psmouse protocol=any but the trackpoint is always detected as a generic mouse. Also, the problem persists whether I use the stable kernel (6.1.0) or the backports kernel (6.12.12). Is this a kernel bug? Is there a workaround?