tobias_platen's blog
Tobias Alexandra Platen's software freedom blog
The weekend after I โฅ Free Software Day 2025 โ Sunday
February 16th, 2025
This is part II of the I Love Free Software Day blogpost. More specifially it is about the game Veloren which I played once three years ago, when the pandemic was still ongoing. My computer that I had at time did not have a good GPU, so I used my brothers old computer with an NVIDIA card. A few years I got into VR which is only possible in freedom thanks to the libsurvive project. To be able to play VR games I baught an AMD graphics card, before that I used my Talos II’s built-in ASpeed graphics. With the new GPU I can drive up to 4 monitors. All the games that I run on my Talos II are free software:
VRChat is popular in the Transgender ๐ณ๏ธโโง๏ธ community, but I avoid it since it is non-free. V-Sekai is one of the free software replacements. While we need binaries to run a program on a computer, we also need source code for a program to qualify as free software. I am using part of the V-Sekai code in my BeatSaber clone called BeepSaber as I want full body tracking controlling an animated VRM avatar. While I usually present masculine as an enby ๐ค๐๐ค๐ (I never wear a beard), my VRM avatar will be female โ๏ธ. For me that is a way to try out genders different from my gender assigned at birth.
There is another free software VR game that I would like to play. It is called VoxelWorksQuest and its author is the same person that wrote BeepSaber. Unfortunately it is unmaintained, so I decided to replace it with with a VR port of minetest (now called luanti). Minetest is similar to Minecraft and Veloren, but it is both free software and able to run on old computers with built-in freedom respecting GPUs. Luanti is also written in a programming language called lua, which I use at work a lot. In the next few weeks I will be continuing to work on Minetest XR adding missing important features to make the game playable.
Next month I will go to the Chemnitzer Linux-Tage where I also expect to meet many queers ๐ณ๏ธโ๐. There is also a “Gaming Night” ๐ฎ and many interesting talks, including one about KiCad (the tool that I use for building my own hardware), BTRFS (my preferred filesystem), Banking apps (unfortunately not GNU Taler) and Passkeys (allowing passwordless login). In the meantime I will watch recorded videos from FOSDEM, starting with “Declarative and Minimalistic Computing” then moving to “Open Hardware and CAD/CAM”.
The weekend after I โฅ Free Software Day 2025 – Saturday
February 15th, 2025
Yesterday I contributed to the Free Software Directory, unfortunately I did not have enough time to write my intended blog post. So I am doing that now. #ilovefs
Free Software is a matter of freedom, not price. A program is free software if the program’s users have the four essential freedoms:
๐ค The freedom to run the program as you wish, for any purpose (freedom 0).
๐ The freedom to study how the program works and to make changes (freedom 1).
๐ค The freedom to redistribute copies so you can help others (freedom 2).
๐ The freedom to distribute copies of your modified versions to others (freedom 3).
I have been developing free software both professionally and as a hobby for long times. Recently I came out as genderqueer (also known as non-binary) at the first
meeting of a GNU/Linux user group I cofounded. On the weekend before I was at FOSDEM where I met many trans and non-binary individuals, some of them at the Guix Days fringe event.
I also have used software written by trans and non-binary contributors. This includes the FPGA toolchain based on yosys and nextpnr, GNU MediaGoblin, SlimeVR and Monado to just name a few. For an upcoming hardware project (A Lighthouse tracked VR headset with RYF in mind), I will be using an ICE40 FPGA. For GNU MediaGoblin, I plan to setup my own instance again. I spefifically backed SlimeVR because the software is portable and can be used on a Freedom RespectingTalos II. When I saw the BLร HAJ in the SlimeVR video I immediately recognized it is part of the Transgender culture. I also saw more than one BLร HAJ at FOSDEM. Finally there is Monado, where one of the lead developers and some other contributors do identify as non-binary and/or transgender. Many of those persons were not out when I started using the software. Over the time, I realized that I am trans too, more specifically non-binary.
Part II of the blog post will be done tomorrow.
Back from FOSDEM
February 3rd, 2025
This weekend I visited FOSDEM and the Guix Days in Brussels. On Thursday I went to the Guix Days, a FOSDEM Fringe event. There I met many GNU Guix and Spritely Goblins contributors. I have been using the Guix System for many years, and I have plans to run Guix on smartphones. Spritely Goblins looks as interesting as GNUnet and Taler for me, but I did hot have a deeper look yet. From my eduction in computer science, I know both distributed systems and actor models. Goblins can be used with both Guile and Racket. I prefere the Guile variant, since I already know Guile from Guix. We discussed why “guix pull” is so slow. I also had proposed a talk about Guix System on Alternative target architectures (ARM, RISCV, POWER etc.) including smartphones and my Talos II workstation, currently running Debian GNU/Linux. My second proposal was about Virtual Reality. Unfortunately both poposals have been rejected as there were too many good talks.
On Saturday, the first Day of FOSDEM, I was in the Android Open Source Project and FOSS on Mobile Devices devrooms. There were many interesting talks including “Forking Android considered harmful” and “Towards a purely open AOSP: Adding Android-like functionality to AOSP”. On the second half of the day I went to the “FOSS on Mobile Devices” devroom, where I met Caleb Connolly who works on Qualcomm Snapdragon 845 Mainline Linux. I also met them at the last FrOSCon where I presented my port of Minetest to the LibreM5, a smartphone running GNU/Linux. The first talk in the FOSS on Mobile Devices devroom was “Mainline vs libhybris: Technicalities, down to the buffer”, I also watched most others. I have used libhybris once, as part of Droidian running on my OnePlus 6T, a SDM845 phone. Due to bugs I switched back to Android, later I found out that my phone was not supported by Droidian anymore. By contrast, Mobian uses the Mainline Kernel and does not use Android drivers.
On Sunday I started in the JavaScript devroom, then moved to the “Declarative & Minimalistic Computing” devroom, where I met many of the those who I saw at Guix Days, on the days before FOSDEM. First I listened to the “Minimalist web application deployment with Scheme” talk, then I ate my second a vegan burger at FOSDEM(the first one one was at Saturday). Unfortunately most of the food offered at FOSDEM is still not vegan. Next I went to the Luanti and FOSS on Mobile Devices booths in the K building and talked with the developers about some of the projects that I am currently working on. After that I went back from where I came from to listen to the “The Whippet Embeddable Garbage Collection Library” talk before the most interesting talks about the GNU Shepherd and Spritely Goblins started. Unfortunately I missed the talks from Jessica Tallon and Christine Lemmer-Webber, as I went to the Robotics and Simulation devroom where I had two interesting talks about the “Open 3D Engine” and the “Valve’s Lighthouse 2.0 Technology”. While I prefer Godot for VR, I still liked both talks. I am also working on my VR headset using the “Lighthouse positioning deck” from Bitcraze and a postmarketOS compatible smartphone, currently running both Android and Mobian.
After those two talks I went to the Keynotes at Janson (the big room). Both “The Growing Body of Proprietary Infrastructure for FOSS Development: Repeating Bad History” and “How we are defending Software Freedom against Apple at the EU’s highest court” were pretty interesting talks from Free Software activists who I fully support. Finally I went to room near Jansen where people were working on Virtual Reality (VR). I did not know about Overte e.V. and their Social VR projects yet. I told one of the developers that I use components of V-Sekai in my BeatSaber clone. V-Sekai is more or less a clone of the non-free VRChat game, one of those games that are popular in the transgender community. I am nonbinary and trans myself, and met many other queers at both FOSDEM and Guix Days. Not fully out yet, I enjoy social VR where I can try out a feminine avatar, while presenting mostly masculine in real life. At FOSDEM I wore a skirt and a dress, makeup and cat ears. Next month I’ll plan to go to the Chemnitzer Linux-Tage conference.
Meta Horizon OS, Replicant and the GPL
April 23rd, 2024
Meta Horizon OS is a variant of Android, which includes GPLed parts, including the kernel Linux. Replicant is a fully free variant of Android that can run on smartphones and other kinds of devices. As the maintainer of libsurvive I have been working on a port to Android/Replicant which is known to work well with the Rockchip RK3399.
A few weeks ago, I asked for the source code for the Oclulus-Linux kernel, but until now the Meta Quest does not comply with the GPL. So I plan to make my own device running Replicant and maybe Guix codenamed the Replica Quest. The Replica Quest will include a user interface called LibreVR Mobile and on my POWER9 system I use LibreVR Desktop. Any part that Meta releases as free software can be integrated into Replicant. Non-free parts need to be replaced, that will be hard work.
Talking more about Freedom not Less
February 14th, 2024
I don’t like the term “Open Source”, because it does not refer to freedom. When a computer program is labeled as “Free” (or “Free to Play” in the case of games) we have
the same problem that “Free” often means a price of zero. By contrast games such “Tanks of Freedom” and “Freedom Saber” really respect users freedom. So I try to avoid using free
as an adjective, and use the term “Freedom” instead: Instead of saying that something is “Free Software”, I say it respects the users freedom.
I Love Free Software Day 2024
February 14th, 2024
I recently did my first FOSDEM talk, about a Free Software project that I contribute to: Using the ECP5 for Libre-SOC prototyping. On the day before I met some of the GNU Guix developers. With this short blogpost I want to say a simple “Thank you” to those people I met at FOSDEM, and those who have started projects such as Libre-SOC, SlimeVR, CrazyFlie and Godot Engine.
Because I Love Free Software, I’ll started my own Free Software project called LibreVR. The FSFE’s sister organisations in North America, has a “Respects Your Freedom” certification program, and I recently have begun working on my hardware design for a wireless VR headset and will soon do regular live streams that document my work on Free Software VR games and hardware.
Avoiding nonfree DRM’d Games on GNU/Linux – International Day Against DRM
December 8th, 2023
As a proud user of an FSF-certified Talos II Mainboard and some Rockchip SBCs, I find that is has become easier to avoid using Stream, Valve’s platform for distibution of nonfree computer games with Digital Restrictions Management.
Since I cannot (and don’t want to) play any of the non-free games from Steam, I have begun developing my own games that bring freedom to the users. Some of those games are “clones” of popular nonfree VR games such as Beat Saber and VRChat.
I’m also going to sell copies of those games and hardware that I am currently working on. The games are copylefted Free Software and the hardware is designed with the Respects Your Freedom Certification in mind.
For me there is an ethical imperative to make the game art and hardware designs free too. I don’t think that those things have to be copylefted, as most GNU software is. The distribution service/site must also be ethical, which means that it is not SaaSS and does not send any non-free JavaScript.
I also plan to provide Windows binaries, cross compiled using MinGW and tested on Proton on my Opteron system. My goal here is giving users of Windows a taste of freedom.
I replaced Windows with GNU/Linux long time ago and want to encourage gamers to do the same. The first free game that I had on a Windows 3.1 as a child was GNU Chess. At that time I never heard about Linux and did not know what GNU is. But I started learning to program and wanted to make use of freedom 1.
Today I use GNU Guix which can run on any GNU/Linux distro and even Android. No nonfree software is needed to run libsurvive and spreadgine, so both can be included in Guix. Instead of Steam, I now use Guix for gaming.
When games included in Guix respect Freedom, this does not mean that users do not have to pay to play the games. Guix has substitutes for local builds, and users could either pay for those substitutes or build the game locally. Even when the artwork is non-free, downloading the artwork could be done without running any non-free javascript or other proprietary malware. The FSF* could run Crowdfunding campaings for freedom respecting games and host game servers on hardware that has been RYF certified.
People often think it is not feasible in the current situation to develop a free replacement for some of the most popular nonfree VR games including “VRChat”. But projects such as V-SekaiV-Sekai have proven that this is not the case, free games can be developed and users who value freedom will only play those free games and reject the nonfree games.
Since I want to promote the cause of freedom in gaming, I am settung up a website which lists only libre games that can run on GNU/Linux and/or liberated
consoles. The page includes integration for GNU Taler so that users can donate or buy games and/or RYFed gaming hardware, including a future Guix Deck.
I love Free Software – and Free Hardware Designs
February 14th, 2023
For many years I have been using free software. I remember that one of my first GNU programs that I used was a chess game, ported to 16bit Windows. Many years later I switched to GNU/Linux and started programming myself, and also releasing my software under strong copyleft licences. I also discovered that many popular distros of GNU/Linux include non-free firmware. So I began contributing to GNU Guix, a fully free distro of the GNU System that excludes nonfree firmware blobs, nonfree games, and any other nonfree software.
Unfortunately many hardware vendors, including AMD, NVIDIA and Intel starting making their hardware Defective By Design, by implementing HDCP, a kind of hardware-level Digital Restrictions Management. Even if you never watch Netflix, you will be restricted by the non-free firmware, required to use their CPUs and GPUs. If we want to eliminate that form of hardware-level DRM, we will have to design our own Freedom-Respecting hardware. A few years after I baught my Talos II, I began contributing to the Libre-SOC project.
After switching to the POWER9, it was clear that I would not be able to play the nonfree DRM’d games that Valve distributes on their platform Steam. And I didn’d want to either. So I started porting existing free software games to the ppc64el architecture, including VR games such as V-Sekai and BeepSaber. I discovered that there was a libre-licensed SteamVR clone called libsurvive that implements libre licensed lighthouse-based tracking. So I baught my Valve Index, installed libsurvive and started playing with Godot4.
Today is ๆ โฅ Free Software Day 2023, which aims at raising awareness to Free Software and the passionate, hard-working people behind it. So I want to thank Luke Kenneth Casson Leighton who started the Libre-SOC project and Charles Lohr for their work on libsurvive. Last year the FSFE had an event dedicated to Free Software games, where we played Veloren, a libre licenced voxel game. The game was really fun, so I want to show my appreciation for their work. The same is true for SlimeVR/monado and Yosys/nextpnr. ๐ณ๏ธโ๐๐ณ๏ธโโง๏ธ๐๐ค๐๐ค
5 Years of Freedom with OpenPOWER
September 15th, 2022
5 years ago I preorded my Talos II from Raptor Computing Systems. The Talos II is a POWERful system built from the ground up with freedom in mind. In one of its PCIe 4.0 slots, I plugged an AMD Radeon RX 5700 (Navi 10) which I mainly use for playing VR games, but also for multi monitor setups, faster video decoding and many more. Unfortunately all modern graphics cards require non-free firmware, but currently the libre-soc project is developing an OpenPOWER hybrid CPU/VPU/GPU that comes with its own Vulkan drivers.
Currently the next candidate for Respects Your Freedom certification is the Arctic Tern, a BMC development kit for OpenPOWER systems. A prototype libre GPU can be implemented using two FPGAs, each one for one screen, with a resolution of up to 1920×1200. Currently I use an OrangeCrab for my work on libre-soc, I have no need for an Arctic Tern. I also have a BeagleWire, an FPGA development cape for the BeagleBone Black, using an ICE40 FPGA which is also found on the Valve Index and Talos II.
Unlike a modern x86-64, such as the Steam Deck, the Talos II can’t run Steam, so the is no way to play VR games such as Beat Saber, Blade & Sorcery or VRChat. Currenly I can only play the godot4_openxr_demo using Monado and Libsurvice, but I have begun doing a VR port of Minetest, a libre clone of Minecraft and I am also trying to get Godot Beep Saber VR working with my Valve Index using Monado. Currently Beep Saber only works with SteamVR and the Oculus Quest, both non-free platforms incompatible with OpenPOWER systems.
Since I want a mobile VR headset that works without any non-free software, I propose building one using libre-soc and the already existing Monado OpenXR stack. For both projects there is still much work todo. Hopefully the number of libre VR games will grow in the next few years, if more and more people switch to OpenPOWER and ethical distros. Since I avoid both Android and SteamOS, so I won’t buy the Oclulus Quest nor the Steam Deck. Once a libre VR headset exists, it could get Respects Your Freedom certification. In guess that that will be another 5 years.
Nonbinary Grammatical Gender and Nonboolean Logic
July 14th, 2022
For many years I have been a hobby linguist and also liked doing math. When learning French and Spanish long time ago, I discovered that Grammatical Gender is binary in these languages. Nouns are classified as female or male, a third neuter gender, as it exists in German does not exist. Adjectives and articles are gendered too. In Spanish and French the World (el mundo/le monde) while in German we say die Welt. German also has neuter as in Das U-Boot (a well known boot loader). Old English was gendering too, but in many cases this has been dropped. Other languages such as Finnish and Esperanto do not have a grammatical gender, or more precisely it is unary in these languages. Only one form exists. In Finnish the Moon is called kuu and in esperanto she is called Luno. Luno is derived from latin Luna, a Luna is the divine embodiment of the Moon. In many langues including Spanish and Russion Luna/ะปัะฝะฐ is female. Not so in German where we say der Mond. In Esperanto Luno sound male, but remember there is no gender in that language. The o at the end just indicates that Luno is a noun.
When I studied computer science I heard of “Aussagenlogik” which has two truth values. Those are True (Die Wahrheit) and False (Der Widerspruch) often represented as bits (binary digits). At that time I had never heard the term Nonbinary, but I had heard of Nonboolean Fuzzy Logic and Quantum Computing. In my head I added a third truth value Unknown (Das Unbekannte) which uses the third neuter gender. When one operand of a binary operator is unknown, the whole result becoms unknown. With Quantum Computing we do not have bits, instead qbits which are superpositions of one and zero. My gender feels the same, it is a superposition of both male and female, so I prefer to call myself genderqueer.