Inertial scrolling on T480s

domx93 · 2020-11-30 11:27:50

Hello, I want to enable the inertial scrolling on my T480s, that mounts an elan touchpad. May someone help me?

ewaller · 2020-11-30 15:09:45

What desktop environment are you using? Is it Wayland based, or is it Xorg based?

domx93 · 2020-11-30 15:32:47

ewaller wrote:

What desktop environment are you using? Is it Wayland based, or is it Xorg based?

I'm using plasma, I tryed wayland but I had some issues scaling the screen (I have a UHD screen and I want a 125% scale factor, but with wayland firefox looked a bit "pixelled") so I'm using Xorg.

ewaller · 2020-11-30 15:43:52

And, are you using the synaptics driver, or libinput ?
BTW: I am afraid I am not homing in on a solution: I don't use inertial scrolling and it may not work in this case. I am asking the questions that I know need to be asked to figure out which configuration method your system uses.

Last edited by ewaller (2020-11-30 15:44:55)

mcloaked · 2020-11-30 19:13:43

It seems that at least under Wayland that libinput does support kinetic (inertial) scrolling - see the bottom of the document at https://wayland.freedesktop.org/libinpu … lling.html though it doesn't detail how it is implemented. Does libinput support inertial scrolling under xorg also? I know that for my laptop that includes both a touchscreen as well as a touchpad, that the touchscreen does support kinetic scrolling, but the touchpad on my laptop seems not to (plasma desktop with xorg). I would like to know also if it is possible to get inertial scrolling with the touchpad.

On my laptop I launch chrome with the flag --touch-events=enabled and the touchscreen then allows chrome to do kinetic scrolling when 'flicking' a scroll with the fingers. On a different machine - a chromebook - running arch with chromium which also has a touchscreen then launching chromium the same way with the same flag also allows chromium to use kinetic scrolling on the touchscreen. However on both machines the touchpad fails to use kinetic scrolling, certainly with edge scrolling. Perhaps there is some configuration change that might allow the touchpad to also use kinetic scrolling?

Last edited by mcloaked (2020-11-30 20:27:06)

domx93 · 2020-12-01 08:25:49

ewaller wrote:

And, are you using the synaptics driver, or libinput ?
BTW: I am afraid I am not homing in on a solution: I don't use inertial scrolling and it may not work in this case. I am asking the questions that I know need to be asked to figure out which configuration method your system uses.

I think libinput, but how can I check?

mcloaked wrote:

It seems that at least under Wayland that libinput does support kinetic (inertial) scrolling - see the bottom of the document at https://wayland.freedesktop.org/libinpu … lling.html though it doesn't detail how it is implemented. Does libinput support inertial scrolling under xorg also? I know that for my laptop that includes both a touchscreen as well as a touchpad, that the touchscreen does support kinetic scrolling, but the touchpad on my laptop seems not to (plasma desktop with xorg). I would like to know also if it is possible to get inertial scrolling with the touchpad.
On my laptop I launch chrome with the flag --touch-events=enabled and the touchscreen then allows chrome to do kinetic scrolling when 'flicking' a scroll with the fingers. On a different machine - a chromebook - running arch with chromium which also has a touchscreen then launching chromium the same way with the same flag also allows chromium to use kinetic scrolling on the touchscreen. However on both machines the touchpad fails to use kinetic scrolling, certainly with edge scrolling. Perhaps there is some configuration change that might allow the touchpad to also use kinetic scrolling?

uhm, I just know that on kubuntu (that should use Xorg), it works...

mcloaked · 2020-12-01 13:51:26

domx93 wrote:

ewaller wrote:
And, are you using the synaptics driver, or libinput ?
BTW: I am afraid I am not homing in on a solution: I don't use inertial scrolling and it may not work in this case. I am asking the questions that I know need to be asked to figure out which configuration method your system uses.
I think libinput, but how can I check?

mcloaked wrote:
It seems that at least under Wayland that libinput does support kinetic (inertial) scrolling - see the bottom of the document at https://wayland.freedesktop.org/libinpu … lling.html though it doesn't detail how it is implemented. Does libinput support inertial scrolling under xorg also? I know that for my laptop that includes both a touchscreen as well as a touchpad, that the touchscreen does support kinetic scrolling, but the touchpad on my laptop seems not to (plasma desktop with xorg). I would like to know also if it is possible to get inertial scrolling with the touchpad.
On my laptop I launch chrome with the flag --touch-events=enabled and the touchscreen then allows chrome to do kinetic scrolling when 'flicking' a scroll with the fingers. On a different machine - a chromebook - running arch with chromium which also has a touchscreen then launching chromium the same way with the same flag also allows chromium to use kinetic scrolling on the touchscreen. However on both machines the touchpad fails to use kinetic scrolling, certainly with edge scrolling. Perhaps there is some configuration change that might allow the touchpad to also use kinetic scrolling?
uhm, I just know that on kubuntu (that should use Xorg), it works...

You check check libinput using the info at https://wiki.archlinux.org/index.php/Libinput

Arch Linux

#1 2020-11-30 11:27:50

Inertial scrolling on T480s

#2 2020-11-30 15:09:45

Re: Inertial scrolling on T480s

#3 2020-11-30 15:32:47

Re: Inertial scrolling on T480s

#4 2020-11-30 15:43:52

Re: Inertial scrolling on T480s

#5 2020-11-30 19:13:43

Re: Inertial scrolling on T480s

#6 2020-12-01 08:25:49

Re: Inertial scrolling on T480s

#7 2020-12-01 13:51:26

Re: Inertial scrolling on T480s

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