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WIKI: Img & text fixes

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Lazorne 2023-12-12 10:11:35 +01:00
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25
wiki-rtd/docs/wiki_controllers/about-udev.md
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@ -2,6 +2,12 @@
udev is a device manager for the Linux kernel that gives the system access to various running hardware via device `.rules` files also known as `udev rules`.
udev rules are used to allow and manage the access to a specific devices, so without a proper udev rule some devices such as custom controller could not be used by RetroDECK nor by Steam or any other part of the system.
- Setting an udev rule needs administrator root access with sudo.
- The udev rule must be added when the RetroDECK or any other software that you want access to the device is not running.
- For SteamOS or other immutable systems udev rules might or might not persistent persit over SteamOS updates (we can't say for certain).
## Important directories
`/lib/udev/rules.d/`<br>
@ -30,14 +36,15 @@ SUBSYSTEM=="input", ATTRS{name}=="8Bitdo FC30 GamePad", ENV{ID_INPUT_JOYSTICK}="
SUBSYSTEM=="input", ATTRS{name}=="8Bitdo FC30 II", ENV{ID_INPUT_JOYSTICK}="1", TAG+="uaccess"
```
## Adding Controllers
For these controllers to being recognized but the system and so by RetroDECK is needed to set their own udev rule on SteamOS.
## Controller udev projects
**Valve's - Steam Devices**:
The Steam Devices package is usually installed when you install Steam on your system, it contains rules for the most common controllers. <br>
[steam-devices](https://github.com/ValveSoftware/steam-devices)
Udev rules are used to allow and manage the access to a specific third party usb device, so without a proper udev rule some devices such as the following ones could not be used by RetroDECK nor by the system.
**Game Devices udev**
The following project is an effort to combine all game devices into one package but it is still early and several are missing.<br>
[game-devices-udev](https://codeberg.org/fabiscafe/game-devices-udev)
Some notes on the udev rules:
- Setting an udev rule needs root access.
- The udev rule must be added when the emulator is not running, if it's running it must be restarted to acknowledge the change.
- The udev rules seems to be persistent even after a SteamOS update.
> **NOTE:** If running other Linux distributions the procedure might have some difference, please refer to a proper documentation or a web search.
**Batocera udev**
The Batocera project has also combined a list of other controllers that might be missing from the two projects above.
[Batocera - Controllers])https://github.com/batocera-linux/batocera.linux/tree/master/package/batocera/controllers)