Just another geek.

Year 2018

Linux VNC Remote Desktop with GPU Acceleration

Before we start, this method works by sending whatever on the display to a VNC client, so it can’t handle multiuser login. Yet it’s an open-source solution and works great on a headless server. Install I strongly recommend using a desktop… Continue Reading →

Creating a YubiKey-encrypted Arch Linux Installation

Image from Wikimedia Commons. In this tutorial, we will create an Arch Linux installation whose root partition is encrypted with YubiKey HMAC-SHA1 challenge-response module. The final result looks like this: You will be asked to have a correct YubiKey inserted into… Continue Reading →

Make Your Network Service Listen on Multiple Ports with iptables

I want my OpenVPN server to listen on multiple ports, e.g. port 3000 to 4000, for some reason. I searched for a solution and the answer I got was basically “just run 1001 instances”. It’s not practical obviously. But from my… Continue Reading →

DIY Home Security System with Raspberry Pi: A Step-by-step Guide

Four weeks ago I adopted a baby cockatiel. As a first-time bird owner, I’m often too anxious about the health condition of my birdie, as I’ve read that birds are prone to many household hazards and are notorious for hiding critical… Continue Reading →

Enabling Bluetooth Headset A2DP Profile under Arch Linux with Gnome Display Manager

After some struggle, I finally managed to connect my SBH20 Bluetooth headset with my Thinkpad X250 running Arch Linux. But the headset refuses to switch to A2DP profile, instead, it only wants to work in HSP/HFP profile, leaving error message:… Continue Reading →

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