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Mingcong Bai 06d730e372 quirks: raise AttrTrackpointMultiplier for ThinkPad T470/T480/A485 to 0.75 
As I tested my friend's ThinkPad A485, I found that the default multiplier
resulted in jumpy cursor and a slightly too quick acceleration curve. Upon
checking for Lenovo quirks, I found that since commits 383a60abea
("Better Thinkpad T480 trackpoint multiplier") and a1566e3492 ("quirks:
Thinkpad T470 trackpoint multiplier"), the TrackPoint multiplier for both
T470 and T480 (which shares the same keyboard FRUs with the A485) were set
to 0.4.

However, per my testing, by setting the multiplier to 0.4, the TrackPoint
speed became so painfully slow that it began to hurt my index finger...
I suspect the original commiters have set custom acceleration curves on
their own system, but I might be wrong.

Playing with the multiplier, I found 0.75 to be the most appropriate and,
interestingly, with anything >= 0.8, the TrackPoint began to become jumpy,
with the cursor appearing to have a very low poll rate on the screen (the
higher the multiplier, the worse it gets).

Since, as I mentioned above, the keyboard and TrackPoint parts are shared
between these three models, I'm assuming that this multiplier will work
well for them.

Signed-off-by: Mingcong Bai <jeffbai@aosc.io>
Part-of: <https://gitlab.freedesktop.org/libinput/libinput/-/merge_requests/1149>
2025-02-27 22:47:14 +08:00
.gitlab/issue_templates gitlab: make the bug template the default template 2023-11-23 09:53:09 +10:00
.gitlab-ci CI: bump to Fedora 41 2024-12-23 07:17:31 +00:00
completion/zsh zsh: update completion to include latest debug-events options 2024-11-06 06:38:44 +10:00
doc touchpad: implement support for three-finger drag 2025-02-18 06:44:01 +00:00
include Remove trailing whitespaces in the tree 2022-11-25 10:08:20 +10:00
quirks quirks: raise AttrTrackpointMultiplier for ThinkPad T470/T480/A485 to 0.75 2025-02-27 22:47:14 +08:00
src tablet: track pressure ranges per tablet 2025-02-25 05:18:58 +00:00
test tablet: track pressure ranges per tablet 2025-02-25 05:18:58 +00:00
tools touchpad: implement support for three-finger drag 2025-02-18 06:44:01 +00:00
udev libwacom: fix warnings building without libwacom 2022-07-12 19:44:59 +02:00
.dir-locals.el indentation: add .dir-locals.el for emacs 2018-02-26 18:44:00 +10:00
.editorconfig editorconfig: add settings for sym files 2024-11-04 10:31:30 +00:00
.gitignore gitignore: ignore gnuplot files 2018-05-10 16:25:40 +10:00
.gitlab-ci.yml CI: bump to Fedora 41 2024-12-23 07:17:31 +00:00
.pre-commit-config.yaml pre-commit-hooks v5.0.0 2024-12-04 02:02:12 -05:00
.triage-policies.yml triage-policies: update to handle a few more things in MRs as well 2025-02-03 09:16:02 +10:00
.vimdir Add .vimdir for libinput-specific settings 2015-05-25 09:17:29 +10:00
CODING_STYLE.md Drop the Signed-off-by requirement 2023-07-21 09:08:46 +10:00
CONTRIBUTING.md CONTRIBUTING: Add CONTRIBUTING.md 2024-02-28 17:07:45 +01:00
COPYING Change various references to the master branch to main 2021-04-29 01:31:03 +00:00
meson.build libinput 1.27.1 2025-01-06 15:04:14 +10:00
meson_options.txt meson.build: disable documentation by default 2021-08-03 12:11:09 +10:00
README.md Change various references to the master branch to main 2021-04-29 01:31:03 +00:00

README.md

libinput

libinput is a library that provides a full input stack for display servers and other applications that need to handle input devices provided by the kernel.

libinput provides device detection, event handling and abstraction to minimize the amount of custom input code the user of libinput needs to provide the common set of functionality that users expect. Input event processing includes scaling touch coordinates, generating relative pointer events from touchpads, pointer acceleration, etc.

User documentation

Documentation explaining features available in libinput is available here.

This includes the FAQ and the instructions on reporting bugs.

Source code

The source code of libinput can be found at: https://gitlab.freedesktop.org/libinput/libinput

For a list of current and past releases visit: https://www.freedesktop.org/wiki/Software/libinput/

Build instructions: https://wayland.freedesktop.org/libinput/doc/latest/building.html

Reporting Bugs

Bugs can be filed on freedesktop.org GitLab: https://gitlab.freedesktop.org/libinput/libinput/issues/

Where possible, please provide the libinput record output of the input device and/or the event sequence in question.

See https://wayland.freedesktop.org/libinput/doc/latest/reporting-bugs.html for more info.

Documentation

Examples of how to use libinput are the debugging tools in the libinput repository. Developers are encouraged to look at those tools for a real-world (yet simple) example on how to use libinput.

License

libinput is licensed under the MIT license.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: [...]

See the COPYING file for the full license information.

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