LMMS MIDI percussion base note table
The table below shows LMMS instrument ‘base notes’ such that setting the base note will cause A4 (the default ‘percussion’ note) to play the corresponding General MIDI percussion sound. This is of particular relevance to soundfont synthesiers set to the percussion bank.
# Instrument LMMS Base Note
Using apitrace with GStreamer 1.x to convert OpenGL captures to video
apitrace is a set of tools to trace and replay OpenGL API calls. Using it, we can capture the output of applications like glava (an OpenGL-based audio visualiser), and later replay it or save it to a video file.
Forwarding game controllers and other input over SSH
Various systems exist for remotely controlling Linux systems, such as VNC, Synergy/Barrier and other protocols like SPICE and NX. These systems, however, tend to operate at a high level, and are consequently limited in scope. For example, none of these systems support relative mouse… »
Relative mouse and keyboard input over SSH (or: I just want to play Minecraft)
VNC allows viewing and control of a host computer over a network. However, VNC's mouse support uses absolute mouse positions, and is ineffective when the host computer's mouse cursor is programmatically repositioned. This poses a challenge for use cases such as 3D video gaming,… »
Guide: cURL in an initramfs environment (with HTTPS and DNS)
I recently found myself wishing to be able to remotely unlock my LUKS partitions on (re)boot. The Arch Linux wiki has some information on this, but this was not sufficient for my case, as my network assigns dynamic IP addresses, which I normally push to… »
FIX: Issues installing Origin on Wine (error 3:0 and graphical glitches)
The Origin installer producers a flickering black window with flashes of corrupted images (flipped, cut off, incorrect colours, etc.)
Provided that your graphics card supports Vulkan, switch from wined3d/d3d11 to DXVK. Install DXVK, then run:… »
export WINEPREFIX=/path/to/wineprefix setup_dxvk64
GIF scrolling text marquee with ImageMagick (or: DIY X'trapolis PIDs)… »
#!/bin/bash IMWIDTH=336 IMHEIGHT=24 STEP=2 #pixels per frame FRAMERATE=50 #frames per second OUTPUT="scroll.gif" FONT_PATH=/usr/share/fonts/TTF/LiberationSans-Bold.ttf MESSAGE="Hello World!" BACKGROUND="#000000" FILL="#ff9c10" # Make a "unique" prefix for this run PREFIX=
Hacking a cheap fitness tracker – Setting the time
The Mambo HR is a no-name $30 fitness tracker from Chinese manufacturer Lifesense, and I recently acquired one as a gift. Let's look this horse in the mouth, shall we?
Oof, it's not pretty. The Mambo HR has no buttons or touch functionality,… »
GUIDE: A DIY dynamic DNS server for Linux with BIND
With last month seeing a 100% increase in the number of computers I own, I found it useful to be able to determine the IP address of my various devices, with a lightweight Linux-compatible solution. My initial solution was to use Syncthing and interface with… »
Fix: Allow Kodi to power down and reboot Raspbian
The default settings for Raspbian seem to prevent Kodi from accessing the power-related functions it requires to shut down or reboot the system, causing its power menu to display only the ‘Exit’ option. This is particularly frustrating, as the default setup of Kodi is generally… »
Guide: Launching EmulationStation/RetroPie from within Kodi on Raspbian (The XBone, part 2)
So you've got your Raspberry Pi to display a glorious ‘XBone’ splash screen, but what kind of bone would it be if it couldn't play games? Kodi looks kind of like a console UI, and with RetroPie, we can launch games, but how… »
Guide: A custom splash screen on the Raspberry Pi, for Raspbian Jessie (The XBone, part 1)
There are many guides on the internet for creating a custom splash screen on Linux, but most for Raspbian are based on SysV init, and don't interface well with systemd, which is now used by Raspbian. Those that do support systemd make use of Plymouth… »
Decentralised open-source self-hosted encrypted cloud services
A number of years ago, after reflecting on how dependent I was on Google's cloud services, I began to migrate to open-source self-hosted solutions, primarily through ownCloud. After a recent server outage left me without service for a substantial period, however, I began the search… »
FIX: Systemd services fail with code 228/SECCOMP
Services like systemd-journald and systemd-logind show a failed state with error code 228/SECCOMP, and return an error message when attempted to be started using systemctl. This also caused journald logs to not be created or updated for any services.
The problem on my… »
FIX: Steam crashes when using radeon driver
SymptomsSteam crashes upon opening, after verifying the installation and before opening the main interface, with something about the OpenGL context not supporting direct rendering. Soon afterwards, the X server crashes. (I'm not crashing my computer again just to find the exact error message, thank… »
Evil Bash Scripts: Sudo Impersonator
[runassudo@NEXUS tmp]$ cat awesomeprogram… »
if [[ $EUID -ne 0 ]]; then
echo "This script must be run as root"
echo "Sorry, try again."
echo -n "[sudo] password for $SUDO_USER: "
read -s tmp
echo "PASSWORD IS $tmp"
# Do evil things
FIX: LoL errors on (PlayOn) Linux
Problem‘The game has crashed. Please try to reconnect.’ immediately after champion select.
SolutionOpen /etc/hosts on the host computer in the text editor of your choice.
On the line that resembles:
127.0.0.1 localhost.localdomain localhostadd the name of your computer (found in /etc/hostname). For example:… »
Adventures in Arch: Part 3 - What the GNOME?
A ChoiceIn my previous Adventures in Arch post, I mentioned that I was using XFCE. Because XFCE is cool. However, XFCE got its fame for being a ‘lightweight’ distro, and I had originally chosen it to reduce my CPU load. After noticing, however,… »
GUIDE: Easier League of Legends Installation Using PlayOnLinux
PreamblePlayOnLinux is a brilliant wrapper for WINE, allowing for the easy installation of innumerable Windows programs on Linux. Of these, my most recent install was League of Legends, which, of course, does not have a native Linux release. PlayOnLinux installs and runs it… »
Adventures in Arch: Part 2 - Is It Working Yet?
Let's Get Some Hybrid Graphics Up In Here!
if [ ! -f /etc/X11/xorg.conf ]; then
sudo cp /etc/X11/xorg.conf.fglrx /etc/X11/xorg.conf
startx /usr/bin/openbox-session -- :1How simple was that? And my script for starting X on my integrated card is about the same (only using XFCE,… »
Adventures in Arch: Part 1 - Goodbyee Ubuntu!
IntroductionWell, this is it… This is the moment every Linux user dreads: It's time… to install Arch Linux.
Why am I doing this? How has the moment come so soon?? I thought I had more time!! Well in a nutshell, it's because (as my… »
GUIDE: Exporting Encrypted bitcoin-qt Wallets into MultiBit
IntroductionBitcoin is awesome. Unfortunately, migrating between Bitcoin clients is not. It's especially annoying when the recommended method of exporting with pywallet, importing into BlockChain.info, exporting as an aes.json and importing into MultiBit is 1) incredibly confusing and 2) doesn't actually work.So, here… »
Hand-Crafting a Linux Computer Virus… in Java!
It's a computer virus… for Linux… in Java. That's right, I've broken the Internet.(app.exec is a shell script, hello.exec and hello2.exec are compiled C programs)
DisclaimerThere won't be any code in this post, nor will there be detailed plans for how to implement… »
GUIDE: Dota 2 Dedicated Server on Linux (from Scratch)Note: it is now possible to run a Dota 2 dedicated server on Linux without WINE. This article is kept purely for archival purposes, though it should still work.
It is entirely possible to, using the Windows Alien Swarm SRCDS and WINE, run a Dedicated… »
GUIDE: Directly Executable JAR File
Java is great, but having to type java -jar program.jar gets annoying. Why can't you run it like any other program, with ./program.jar? Well, you can, and it's incredibly simple!
echo '#!/usr/bin/java -jar' | cat - Program.jar>Program
chmod +x Program
Tada! That's it! Program.jar… »
Non-linear video editing with FFmpeg
... like AviSynth, but less shit, and more Linux support.FFeditor(that's not a trademark violation or anything, is it?)
More information when I've finished squashing bugs and making it usable.
GUIDE: Restoring Windows Vista/7 backup files under Linux
If you've recently upgraded from Windows to Linux but now need to restore the backup files you made with Windows Backup (or need to restore someone else's), you've come to the right place!
The Windows Backup FormatUnlike the Windows NT BKF backup format, the… »
GUIDE: Downloading MMS/RTSP/HTTP/etc streams with VLC
We all know that if you use YouTube, you can download the video from Keepvid or something. But what if your content provider uses some crazy streaming system? For example, one website (which shall remain nameless) that I use uses MMS to serve videos.
GUIDE: Kdenlive on Windows, Properly!
IntroductionSo, you want to install and use Kdenlive on M$ Windows, but don't want to do all that crazy Live-CD sh*t (probably because that's not technically doing it in Windows)?
Well, you've come to the right place (website, whatever)!
This guide will show you… »
GUIDE: ‘Stereo Mix’ without PulseAudio[Cut to the chase]
IntroductionSo I recently upgraded (yes, upgraded) from Windows to Linux a while ago, right, and now I want to record my gaming the way DXtory let me (except for free, of course).
So a quick bit of Googling revealed that… »