x4x

Here is the best setup (I think so :D) for K-series Keychron keyboards on Linux.

Note: many newer Keychron keyboards use QMK as firmware and most tips here do not apply to them. Maybe the ones related to Bluetooth can be useful, but everything related to Apple's keyboard module (hid_apple) on Linux, won't work. As far as I know, all QMK-based boards use the hid_generic module instead. Examples of QMK-based boards are: Q, Q-Pro, V, K-Pro, etc.

Most of these commands have been tested on Ubuntu 20.04 and should also work on most Debian-based distributions. If a command happens not to work for you, take a look in the comment section.

Make Fn + F-keys work (NOT FOR QMK-BASED BOARDS)

Older Keychron keyboards (those not based on QMK) use the hid_apple driver on Linux, even in the Windows/Android mode, both in Bluetooth and Wired modes.

using Ansible command line:

ansible-playbook --connection=local 127.0.0.1 playbook.yml

using inventory:

127.0.0.1 ansible_connection=local

	SPC
	SPC: find file
	, switch buffer
	. browse files
	: MX
	; EX
	< switch buffer
	` eval
	u universal arg
	x pop up scratch

	nipap-db:
	image: nipap/postgres-ip4r
	volumes:
	- ./db-data:/var/lib/postgresql/data
	environment:
	- PGDATA=/var/lib/postgres/data/pgdata
	- POSTGRES_USER=nipap
	- POSTGRES_PASSWORD=S3cretDBPas5
	- POSTGRES_DB=nipap

	# /etc/profile.d/best_bash_history.sh
	# Save 5,000 lines of history in memory
	HISTSIZE=10000
	# Save 2,000,000 lines of history to disk (will have to grep ~/.bash_history for full listing)
	HISTFILESIZE=2000000
	# Append to history instead of overwrite
	shopt -s histappend
	# Ignore redundant or space commands
	HISTCONTROL=ignoreboth
	# Ignore more

	Um gitlab auf ubuntu 16.04 oder debian 8.5 zu installieren
	(und wohl auch auf anderen ubuntus, debian hat noch zusätliche Probleme, dafür funktioniert aber z.B. top, htop, usw...)
	müssen folgende Einstellungen in /etc/gitlab/gitlab.rb gesetzt sein:

	postgresql['shared_buffers'] = "512MB" # recommend value is 1/4 of total RAM, up to 14GB.
	postgresql['effective_cache_size'] = "128MB"

	Beim ersten wird in der Config zum Start 256MB angeboten, reicht ggf. auch
	Beim zweiten ist in der Config nur 1MB eingetragen, das kommt mir ggü. dem Standardwert von postgresql (128MB) zu wenig vor.