I believe it should be a firmware issue on trackpoint. There are several ways to set the speed & sensitivity: 1, udev hwdb/rules; 2, xorg conf; 3, GUI; It seems users are rarely to use sysfs directly, so the bug is still there. Regards, Aaron On 12/30/2017 05:57 PM, Sebastian Schmidt wrote: > On Sat, Dec 30, 2017 at 02:43:16PM +0800, Aaron Ma wrote: >> Please try: >> $ xinput set-prop "TPPS/2 IBM TrackPoint" "libinput Accel Speed" -1 >> >> The last value of speed can be -1 to 1. > > Ah. That indeed changes the speed, thanks! > > However, please let me ask again: Isn’t the sysfs interface supposed to > work, too? I’ve got my problem resolved for Xorg now, but about every > article on the internet refers to the sysfs interface for changing the > speed, cf. <https://www.google.com/search?q=trackpoint+speed>. > > I’m also fine with the assertion that Lenovo shipped a broken firmware, > but I’d expect some warning in dmesg then and a reasonable fallback (to > a regular PS/2 mouse?) then. Can we at least agree that there is a > driver bug that ought to be fixed or a firmware bug that ought to be > worked around? > > Thanks, > Sebastian > -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
