Trackpoint reacts jumpy and isn't precise when moved a short distance

[klinge]

https://gitlab.freedesktop.org/libinput/libinput/issues/176

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I made a fresh install of Ubuntu 18.04 on a thinkPad t450s and t480s. The trackpoint reacts, especially if i want to move it only a small distance, very jumpy and erratic.
It is very difficult to hit a precise spot on the screen because if I press with very littel pressure the cursor doesn't move and with a little more it makes a big jump. Somethimes it moves backwards first and then makes a jump in the intended direction. To summ up the trackpoint is very difficult to handle and changing the speedsettings doesn't change the issue.

With Ubuntu 16.04 at least on the t450s everything worked well.

[Daniel van Vugt (vanvugt)]

I believe this is already fixed upstream, at least for T450s:

https://lists.freedesktop.org/archives/wayland-devel/2018-April/037934.html

[klinge (rosgnilk)]

thanks for the hint. I installed the newest version of libinput-bin "libinput-bin_1.10.6-1_amd64.deb" and the behavior did inprove but it does still not work flawlessly. The cursor still jumps somethimes especially if moved a short distance.

Did I miss something or could it be, that the prior fideling about with config files has an effect on the outcome? I tried to reverse all the changes (but of course it is possible, that i forgot something) Any possibility to figure out what I missed?

[jason (jmannonpdx)]

Having the same issue, my cursor jumps when moving short distances.

[Daniel van Vugt (vanvugt)]

OK. I've heard a few complaints about Trackpoints recently so have started to group them here:
https://bugs.launchpad.net/ubuntu/+source/libinput/+bugs?field.tag=trackpoint

However if you want a fix then please also raise the issue with libinput developers here:
https://bugs.freedesktop.org/enter_bug.cgi?product=wayland&component=libinput

[Shuhao (shuhao)]

Related or duplicate: https://bugs.launchpad.net/ubuntu/+source/libinput/+bug/1773276

[Andre Brait (andrebrait)]

This is probably (I'm 99% certain) fixed in libinput 1.11 for good. It's now on par with Windows/macOS.

[Andre Brait (andrebrait)]

Actually, I confused trackpoints with trackpads. Indeed, there's no fix for trackpoints yet.

[Matteo Contini (ziosam89)]

Same problem on Thinpad X1-Carbon 4

[Justin Hancock (juzhancock)]

Same problem for me with the trackpoint on Thinkpad T520i

[Feng Ling (fling)]

Same problem on Thinkpad P50

[Mindey (mindey)]

Same here, on Thinkpad T440, bionic.

[Ilgiz (besheater)]

Same problem. Thinkpad t440p, Ubuntu 18.04 bionic.
libinput version - 1.12.4-1

[Daniel van Vugt (vanvugt)]

Is that a typo? There's one character difference:

bionic presently uses 1.10.4-1
only disco uses 1.12.4-1

[Daniel van Vugt (vanvugt)]

Also, if anyone does experience this bug in libinput version 1.12.x then please help by reporting the bug upstream here:

  https://gitlab.freedesktop.org/libinput/libinput/issues/new

and then tell us the new bug ID.

[Ilgiz (besheater)]

No typo. I'm experienced this bug before on default libinput 1.10.4-1. Then I'm installed latest version using dpkg (libinput-bin_1.12.4-1_amd64.deb, libinput10_1.12.4-1_amd64.deb) to see if it's fixed. And it doesn't. Same jumpy behavior. Only difference that I'm noticed is slightly increased sensitivity.

[Ilgiz (besheater)]

I think this is the same bug
https://gitlab.freedesktop.org/libinput/libinput/issues/176

[snow (mrauschert)]

I see also this problem on my Thikpad T495 on Ubuntu 18.04 and 20.04:

"The trackpoint reacts, especially if i want to move it only a small distance, very jumpy and erratic.
It is very difficult to hit a precise spot on the screen because if I press with very littel pressure the cursor doesn't move and with a little more it makes a big jump."