Andrej Kastrin akastrin

Updating expired GPG keys and their backup 🔑🔐💻

I use a GPG key to sign my git commits.

An error like this one might be a sign of an expired GPG key.

error: gpg failed to sign the data fatal: failed to write commit object

This guide was created for EndeavourOs Endeavour Release which if using the Online installer, as of July 2024, will provide Plasma 6.1 and Nvidia 555 drivers. This guide shows using Grub but will work with systemd-boot as well if you follow steps for kernel params.

Create file /etc/modprobe.d/nvidia.conf with the following contents

options nvidia_drm modeset=1
options nvidia_drm fbdev=1
options nvidia NVreg_EnableGpuFirmware=0
options nvidia NVreg_PreserveVideoMemoryAllocations=1 NVreg_TemporaryFilePath=/var/tmp

Pre-installation

Live CD installation section

Create a bootable USB Flash Drive

Download Arch Linux ISO

You may use Rufus, balenaEtcher or Ventoy

Personal Tikz/PGFplots gallery

Some of them are shared on texample.net

How to convert to image:

Copy .tex file to here.
Run make.

Submission Steps

Download source code from Overleaf if you use it: menu -> download -> source.
Strip comments and combine all tex files (f01-main.tex, f02-intro.tex, etc.) into one file arxiv_main.tex.

# Replace f01-main.tex with the main tex file in your overleaf project
latexpand --empty-comments f01-main.tex > arxiv_main.tex

VMWare Workstation for Linux v16 has issues related to memory fragmentation. This will cause the CPU to choke with 100% after a time. The scripts provided will allow you to fix this at launch of vmware on Linux.

Instructions:

Put vmware-workstation.sh to a good location on your computer like ~/bin or similar
Make vmware-workstation.sh executable
Edit vmware-workstation.desktop to have correct paths based on your setup
Open shell, cd to directory with .desktop file and run:

desktop-file-install --dir=$HOME/.local/share/applications ./vmware-workstation.desktop

Create the default KVM storage pool for images

Some distributions create the defaut KVM (libvirtd) storage pool for images when they install KVM, others do this upon the creation of the first KVM guest. Creating the default pool from scratch is pretty straightforward. Here's how to do it with virsh.

First verify there is no existing default pool:

$ virsh pool-list --all
 Name      State    Autostart
-----------------------------

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

	// ==UserScript==
	// @name Medium Paywall Bypass
	// @namespace Violentmonkey Scripts
	// @run-at document-start
	// @match ://.medium.com/*
	// @match ://medium.com/
	// @match :///*
	// @grant none
	// @version 2.4
	// @inject-into content

	1. install usb stick with arch linux
	2. boot from usb
	3. run `fdisk -l` to find partition with linux installation (ie /dev/sda3 Linux Filesystem)
	4. mount partition: `mount /dev/sda3 /mnt`
	5. arch chroot into it: `arch-chroot /mnt`
	6. rebuild initramfs: `mkinitcpio -p linux` (if that doesn't work yes try `pacman -S linux` only)
	7. shutdown, unplug usb, reboot
	8. if that didn't work, other things to check for here https://gist.github.com/miguelmota/d9e2249b8aff1e7d2e3093bcb54428e2