My Ubuntu OS was blown up three days ago (ㄒoㄒ).

Long story short, I stuck in an infinite and helpless login loop in Ubuntu, and there was no feasible workaround to address the problem (with 2-hour intensive googling). Well, since I need to re-install my operating system anyway, why not try something new.

Though I’ve spent more than one year on Ubuntu Linux (daily use and at work), it’s still took me two nights + one day to configure everything in Arch.

I would definitely NOT recommend a total Linux newbie to try Arch Linux. IT’S TOO “LIGHT”!

## Installation & Configuration

Since there are plenty of decent and mature online tutorials, it would be pointless for me to reinvent the wheel. I will recommend some of them below that I followed with.
Notes:

1. Make sure you understand how each command works (use man <cmd> or <cmd> --help to display commands’ description)
2. Always refer to Arch Wiki when you are confused

### Everything works out of box

My installation was really smooth, thanks to above authors’ hard work on their posts. I’d like to thank Thinkpad as well, since it doesn’t require extra time to configure any hardware ^_^

My arch-linux configurations:

Service Name Type / Version
Display server Xorg
Desktop Environment KDE Plasma 5
Display Manager SDDM
Window Manager KDE
File Manager Dolphin
Shell zsh + oh-my-zsh
Terminal emulator Konsole
Widget toolkit gtk5-base

## Things Outside the Tutorials

Here I’d like to talk about some stuff that are not covered in aforementioned tutorials but are helpful to know.

### Reducing reboot waiting time

At early installation & configuration stage, you need to reboot the system frequently, during such period you might see a message like A stop job is running for session ... (1 min 30s). This waits for 90 sec to continue the reboot process. You can reduced the time out in /etc/systemd/system.conf (Here reduced to 30s):

DefaultTimeoutStartSec=30s
DefaultTimeoutStopSec=30s


Then you need to reload system manager with systemctl daemon-reload.

### Calling terminal using keyboard shortcut

In my configuration, it didn’t come with the default ctrl+alt+t to call a terminal. If you are using KDE desktop environment, this can be set in Global Shortcuts. First, press the Super (aka Win) key to show the menu. Then, just search with shortcut.

One lesson I learnt form this time is to: first explore available settings via GUI, then play with the command-line & scripts. In next point, I will talk about my exhausted experience to merely remap caps-lock and ctrl key via scripting, which cost me more than 3 hours…

### Remapping caps-lock & ctrl

Actually, this can be set with GUI if you’re using KDE, or with gnome-tweak-tool if you’re using Gnome.

In KDE, Keyboard and Hardware Layout -> Advanced -> Ctrl Position -> Swap Ctrl and Caps Lock

Before I knew this can be easily set with GUI, I tried a trillion times to modify scripts/settings like .Xmodmap, autostart-scripts, .xinitrc, setxkbmap, and /usr/share/sddm/scripts/Xsetup, and rebooted a trillion+1 times. All the scripts either worked on current run but fails to load after a reboot, or didn’t auto-load/parse due to low priority in KDE Plasama, or cost me extra few seconds to wait on login…

Again, go through settings that available on GUI first! Just like reading an instruction before using a product (I know lots of people skip this, including me…).

### Changing Weird Font on Google Chrome

I change my web browser to Google Chrome as I have a lot of important bookmarks and plug-ins on Chrome (the default web browser Konqueror is also way too “hacker” to use for me).

Anyway, the font can be set in Chrome built-in settings.

Open Chrome Browser -> Settings -> Advanced -> Customized Fonts

### HiDPI Settings for High Resolution Screen

If you’re using high resolution screen, the first thing you will complain is that, everything is surprisingly tiny! The font size is around 1-2 mm.

I copied the KDE settings below, by Arch wiki:

KDE You can use KDE’s settings to fine tune font, icon, and widget scaling. This solution affects both Qt and Gtk+ applications.

To adjust font, widget, and icon scaling together:

1. System Settings → Display and Monitor → Display Configuration → Scale Display
2. Drag the slider to the desired size
3. Restart for the settings to take effect

1. System Settings → Fonts
2. Check “Force fonts DPI” and adjust the DPI level to the desired value. This setting should take effect immediately for newly started applications. You will have to logout and login for it to take effect on Plasma desktop.

1. System Settings → Icons → Advanced
2. Choose the desired icon size for each category listed. This should take effect immediately.

Update: you might find weird horizontal lines appear and disappear in Konsole after you scaling, this is a known bug.

If you feel Chrome toolbar is too small and want to scaling it, using following method (source):

1. Open /usr/share/applications/google-chrome
2. Find Exec=/usr/bin/google-chrome-stable %U
3. change it to Exec=/usr/bin/google-chrome-stable --force-device-scale-factor=1 %U.
• Change to your desire scale factor, floating point acceptable.

If above is not working, using following, (source):

1. sudo touch /usr/bin/google-chrome create a file as workaround;
2. sudo chmod a+x /usr/bin/google-chrome make its executable;
3. sudo vim /usr/bin/google-chrome start editing
#!/bin/bash

5. start Google Chrome in terminal using google-chrome
• I find that if I start Chrome from menu, it remains the old settings. I assume this must be a path problem. Will try to find a workaround so that I don’t need to start Chrome from terminal every time.

### Setting Wallpaper

Note: I only tested this with my configuration (as listed above) There are a lot third parties application can also achieve this (just google it!).

For Main Screen:

1. right click anywhere of main screen -> Configure Desktop
2. choose a file


System Settings -> Start up and Shutdown -> Login Screen (SDDM) -> Background

I’m still exploring on this part. QAQ

A full list of applications can be found at here (Arch Wiki).

• Network Manager: NetworkManager
• Maths: octave
• VPN clients: OpenVPN
• Webcam: guvcview (work for X1C, haven’t check for other machines)
• Office suites: libreoffice-fresh
• Notepadqq: GitHub link (I treat it as a complimentary to Vim)

## Random Thoughts

Yeahhh, finally done the configuration and post. Let me first show something:

I’ve set so many personal first-time during this week:

• first time to encounter an un-fixable system bug in Ubuntu
• first time to use a terminal in tty mode in Ubuntu (the entire machine just have no GUI, and terminal font size is like 2mm large)
• first time to install Arch from scratch!
• first time to write scripts for installation & configuration

In addition, I found myself have become much more sensitive and picky on the installation of application/dependency/package since I started using Arch. For instance, I once installed an undesired application. When I wanted to delete it later, I unconsciously wanted to compare all installed related dependencies one by one with the pacman Rcns xxx list. Honestly, I was feeling quite uncomfortable until I was certain that every redundant dependency had been removed. Oops, am I becoming software mysophobia?

At Markham, 3:44 PM
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