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https://github.com/Gnarus-G/maccel
Mouse acceleration driver and kernel module for Linux.
https://github.com/Gnarus-G/maccel
linux linux-kernel-module mouse-accel-driver mouse-acceleration
Last synced: about 1 month ago
JSON representation
Mouse acceleration driver and kernel module for Linux.
- Host: GitHub
- URL: https://github.com/Gnarus-G/maccel
- Owner: Gnarus-G
- License: gpl-2.0
- Created: 2024-01-16T01:20:24.000Z (11 months ago)
- Default Branch: main
- Last Pushed: 2024-08-19T02:57:12.000Z (4 months ago)
- Last Synced: 2024-08-19T03:56:15.369Z (4 months ago)
- Topics: linux, linux-kernel-module, mouse-accel-driver, mouse-acceleration
- Language: C
- Homepage: https://maccel.org
- Size: 2.67 MB
- Stars: 47
- Watchers: 4
- Forks: 4
- Open Issues: 3
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# maccel
Linear mouse acceleration.
## Acceleration Function
$$V = \frac{\sqrt{dx_0^2 + dy_0^2}}{i}$$
$$dx_f = dx_0 * (1 + aV)$$
$$dy_f = dy_0 * (1 + aV)$$
Where $dx$ and $dy$ are the directional displacements read from the mouse,
$i$ is the polling interval of the mouse; this would be 1ms if the polling rate is 1000Hz,
and $a$ is the user provided
acceleration factor
## Install
Make sure to have these dependencies installed on your machine:
`curl`, `git`, `make`, `gcc`, and the linux headers in `/lib/modules/`
```sh
curl -fsSL https://www.maccel.org/install.sh | sudo sh
```
## Uninstall
```sh
sh /opt/maccel/uninstall.sh
```
Or
```sh
curl -fsSL https://www.maccel.org/uninstall.sh | sudo sh
```
## CLI Usage
```
CLI to control the parameters for the maccel driver, and manage mice bindings
Usage: maccel
Commands:
tui Open the Terminal UI to manage the parameters and see a graph of the sensitivity
bind Attach a device to the maccel driver
bindall Attach all detected mice to the maccel driver
unbind Detach a device from the maccel driver, reattach to the generic usbhid driver
unbindall Detach all detected mice from the maccel driver reattach them to the generic usbhid driver
set Set the value for a parameter of the maccel driver
get Get the value for a parameter of the maccel driver
help Print this message or the help of the given subcommand(s)
Options:
-h, --help Print help
-V, --version Print version
```
## Notes
One should disable the acceleration done by default in some distros, e.g. by `xset` or `libinput`.
[Full Guide](https://wiki.archlinux.org/title/Mouse_acceleration#Disabling_mouse_acceleration)
Here is [Breakdown of why and how I ended up making this](https://www.bytin.tech/blog/maccel/)
## Troubleshooting Install
### gcc
The version matters, it must match the version with which the kernel was built.
For example you might encounter such an error:
And you'll have to find a version of `gcc` that matches. This will be more or less annoying
depending on your distro and/or how familiar you are with it.
### linux headers
You want to make sure that `/lib/modules/` is not empty. For example mine looks like this:
```
total 0
drwxr-xr-x 1 root root 114 Jan 29 17:59 .
drwxr-xr-x 1 root root 159552 Jan 29 22:39 ..
drwxr-xr-x 1 root root 10 Jan 29 17:59 6.6.14-1-lts
drwxr-xr-x 1 root root 12 Jan 29 17:59 6.7.0-zen3-1-zen
drwxr-xr-x 1 root root 494 Jan 29 17:59 6.7.2-arch1-1
drwxr-xr-x 1 root root 494 Jan 31 21:54 6.7.2-zen1-1-zen
```
You want to find headers that match your kernel as represented by
```
uname -r
```
On an arch based distro you search for the available headers with
```
sudo pacman -Ss linux headers
```
## Troubleshooting Driver
If you notice any weird behavior and are looking to investigate it,
then try a debug build of the driver. Run this modified install command.
```sh
curl -fsSL https://www.maccel.org/install.sh | sudo MACCEL_DEBUG_INSTALL=1 sh
```
This debugging experience might be lacking still. Feel free to report any issues.
## References
- https://lwn.net/Kernel/LDD3/
- https://github.com/torvalds/linux/blob/master/drivers/hid/usbhid/usbmouse.c
- https://www.kernel.org/doc/html/latest/input/index.html
- https://github.com/a1xd/rawaccel/blob/master/doc/Guide.md
- https://github.com/Skyl3r/leetmouse/blob/master/driver/accel.c
- https://sourceforge.net/p/fixedptc/code/ci/default/tree/
- https://github.com/torvalds/linux/blob/master/drivers/input/evdev.c
- https://github.com/freedesktop-unofficial-mirror/evtest/blob/master/evtest.c
- https://docs.kernel.org/input/input-programming.html
- https://www.kernel.org/doc/Documentation/input/input.txt
- https://docs.kernel.org/driver-api/input.html
- https://linux-kernel-labs.github.io/refs/heads/master/labs/device_drivers.html
- https://www.youtube.com/watch?v=oX9ZwMQL2f4
- https://gist.github.com/fstiehle/17fca11d7d1b4c2b8dfd982e1cf39caf