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balkian.github.com/content/post/2021-10-30-Logitech mk850.md

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---
title: Logitech MB850 combi in linux
date: 2021-10-30 00:00:01
tags:
- linux
- logitech
- keyboard
- mouse
---
As a follow-up to my last post, I've decided to also configure my mk850 combo (k850 + m720 triathlon).
Some notes:
* The keyboard is usually connected to this PC through bluetooth. Since this is a change I usually do in the system for every keyboard, I added a rule for any bus (usb, bluetooth, etc)
* The mouse has an additional button that registers as a keyboard. Every press maps to three key events. I've disabled two of them and mapped the action to F19, in case I want to use it in my DE/WM.
```cfg
evdev:input:*
KEYBOARD_KEY_70039=leftctrl # bind capslock to w
evdev:input:b0005v046DpB015*
KEYBOARD_KEY_700e0=f19
KEYBOARD_KEY_700e2=unknown
KEYBOARD_KEY_7002b=unknown
```
After that, simply run:
```
sudo udevadm hwdb --update && sudo udevadm trigger
```
Make sure the settings have been applied by running `evemu-describe`:
```bash
sudo /sbin/evemu-describe /dev/input/event<id of your device> | grep KEY_
```