TBog

Plan: Enable Headscale on HP T630 behind Cloudflare Tunnel

Context

Goal: run a self-hosted Headscale (Tailscale control server) on an HP T630 and reach it over the internet through the existing Cloudflare Tunnel on domain tbog.rocks.

Current state:

Stack 1 (docker-compose): pihole, nginx, homepage, portainer
Stack 2 (docker-compose): cloudflared, headscale

Issue details

After changing my GPU from nVidia to AMD the ASUS PG278Q display is all black. https://www.reddit.com/r/archlinux/comments/ovrq8o/edid_not_readable_by_mesa_but_working_under_nvidia/

Fix found online

https://rizvir.com/articles/asus-PG278Q-in-linux/

xrandr --newmode "2560x1440" 241.5 2560 2608 2640 2720 1440 1443 1448 1481 -hsync +vsync
xrandr --addmode DP1 2560x1440
xrandr --output DP1 --mode 2560x1440

In recent years, the trend of cheating customers by unscrupulous Chinese sellers is gaining momentum with enormous speed.

H2testw

With H2testw, you can write and read how much data the storage device is actually capable of holding. This can work with network drives, hard drives, SD cards and USB sticks. https://www.softpedia.com/get/System/System-Miscellaneous/H2testw.shtml

AxoFlashTest

You'll need Administrator rights to run it, but thanks to this the process of testing is so fast that you'll be provided with the real information about your media health and speed in about 5 minutes. You can measure speed of your media and you can recover it in one click if it's fake. https://flashtest.alexkhoroshev.ru/?lang=en

Add the linux boot option from Windows

see https://www.linuxquestions.org/questions/linux-general-1/using-bcdedit-to-configure-a-multiboot-system-and-add-linux-4175644308/

Enter Command Prompt (admin) and use `bcdedit`

List entries
bcdedit /enum firmware
Copy UEFI entry of "Windows Boot Manager" to create a new entry for Ubuntu:

How to see what packages need an update without side-effects

The reason for not running pacman -Sy is to avoid installing packages from different package database updates.

Example: It's 5 days later when you've forgotten you ran pacman -Sy and run pacman -S nvidia that you're likely to break something

Solution

source The bash script checkupdates, included with the pacman-contrib package, provides a safe way to check for upgrades to installed packages without running a system update at the same time.

see: System maintenance

How can instantaneously extract text from a screen area using OCR tools?

copy screen_region_ocr.sh file to your home folder
chmod +x ~/screen_region_ocr.sh to make it executable
copy screen_region_ocr.desktop to ~/.local/share/applications/ (change Exec path)

Dependencies: tesseract imagemagick spactacle xsel

You can now run Screen Region OCR from your application launcher, select a screen region then paste (Ctrl+V) the OCRed text where you need it

Arch linux zram

https://github.com/Nefelim4ag/systemd-swap

Changes

only one zram device
predict zram size based on compression algorithm
set mem_limit for zram

Paths

/usr/bin/systemd-swap

Lenovo IdeaPad 5

Tips and tricks

Taken from https://wiki.archlinux.org/index.php/Lenovo_IdeaPad_5_14are05

Fix sleep issue

Look for S3 sleep fix here: https://wiki.archlinux.org/index.php/Lenovo_IdeaPad_5_14are05#Suspend_issues_(S3_sleep_fix)

Setup performance mode and battery toggles

install acpi_call (or acpi_call-lts for LTS kernel, acpi_call-dkms for other kernels)

Setting up a tiling WM (bspwm) to run alongside XFCE. This setup is nice because it grants you all of the great features of a tiling WM without having to sacrifice the conveniences of a DE (in this case, XFCE).

https://bgdawes.github.io/bspwm-xfce-dotfiles/

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