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Matthias Klumpp

@mklu.bsky.social
58 followers 56 following 18 posts

PhD Student in Neuroscience by day, free software developer by night. Opinions are my own.

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Matthias Klumpp @mklu.bsky.social · 11/09/2026
I had some adventures in image-processing land with #JPEGXL for #AppStream, as well as #VIPS and sandboxing. If you want to know more about AppStream's new media processing and how it uses JPEG-XL, I finally managed to blog about it: blog.tenstral.net/2026/09/jpeg... #freedesktop #jxl #debian
blog.tenstral.net
JPEG-XL, AppStream, and better media processing – Ximions Blog
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Matthias Klumpp @mklu.bsky.social · 10/09/2026
Users of #Fedora / #Arch #Linux and FreeBSD should watch out for #PackageKit updates and update as soon as they are available, to avoid a few security issues. PackageKit 1.4.0 was just released and resolves a bunch of CVEs/GHSAs. See lists.freedesktop.org/archives/pac... / github.com/PackageKit/P...
lists.freedesktop.org
PackageKit 1.4.0 released!
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Matthias Klumpp @mklu.bsky.social · 06/09/2026
...better prediction of system resource limits per-experiment with better warnings, optional color-exact video recordings, and many quality-of-life improvements & bugfixes. Changelog: github.com/syntalos/syn... Get Syntalos here: syntalos.org/get/
syntalos.org
Download Syntalos
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Matthias Klumpp @mklu.bsky.social · 06/09/2026
#Syntalos 3.2.0 is out for scientists who need reliable multimodal data acquisition on #Linux! This release brings a new #SpikeGLX module to interface with a remote SpikeGLX instance to record from #Neuropixels probes, more space-efficient deferred video encoding, ...
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Reposted by Matthias Klumpp
Sovereign Tech Agency @sovereign.tech · 11/06/2026
We’re thrilled to announce the 2026 #SovereignTechFellowship cohort. Welcome to Jan Kowalleck, Philipp Sauberzweig, Pablo Neira Ayuso, Joris Van den Bossche, @yabellini.bsky.social, Denis Cornehl, Jakub Beránek, @mklu.bsky.social 1/2 www.sovereign.tech/news/meet-th...
Graphic for the Sovereign Tech Fellowship with that wordmark and the tagline “Effective support for essential experts and future contributors in the open source ecosystem” below it. At the bottom is the Sovereign Tech Agency.
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Matthias Klumpp @mklu.bsky.social · 23/04/2026
Thanks to the Red Team of Deutsche Telekom Security GmbH for finding and reporting this issue, and all the package maintainers who worked to ensure fixes are ready and shipped today. If you are using Arch, Debian, Ubuntu or Fedora, you should already have updates waiting. 3/3
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Matthias Klumpp @mklu.bsky.social · 23/04/2026
Fixes for this vulnerability should already be available everywhere since today. You can read more about CVE-2026-41651 on the security researcher's blog: github.security.telekom.com/2026/04/pack... 2/3 #pack2theroot #osssecurity #freedesktop
github.security.telekom.com
Pack2TheRoot (CVE-2026-41651): Cross-Distro Local Privilege Escalation Vulnerability
Pack2TheRoot (CVE-2026-41651) is a local privilege escalation (LPE) vulnerability that affects multiple Linux distributions in default installations.
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Matthias Klumpp @mklu.bsky.social · 23/04/2026
Forgot your root password? No problem! With #PackageKit <= 1.3.4 you can do all the fun root action on any Linux system you have local access to, no privileges required! Don't like that "feature"? Then PLEASE UPDATE your system ASAP to PackageKit >= 1.3.5 or any fixed distro package! 1/3
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Reposted by Matthias Klumpp
Sovereign Tech Agency @sovereign.tech · 12/12/2025
In our latest blog post, we take you inside the event with a recap of the highlights ➡️  www.sovereign.tech/news/who-wil... @icing.bsky.social @hugovk.dev @mklu.bsky.social
sovereign.tech
Who Will Maintain Our Digital Future? | Sovereign Tech Agency
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Reposted by Matthias Klumpp
Sovereign Tech Agency @sovereign.tech · 30/07/2025
Open source maintainer and PhD candidate @mklu.bsky.social first got curious about Linux as a teenager with a very slow internet connection but big passion for computer systems. That curiosity sparked a journey into open source that continues to this day.
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Reposted by Matthias Klumpp
Sovereign Tech Agency @sovereign.tech · 15/06/2025
Zu Open Source Week der Vereinten Nationen bringen wir eine Delegation von 12 Open-Source-Expert*innen zusammen, deren Arbeit die digitale Infrastruktur, auf die wir alle angewiesen sind, aufrechterhält. Ihre Teilnahme bringt wichtige... #UNOpenSourceWeek #maintainathon #MaintainerSpotlight 1/3
sovereign.tech
Expert*innen-Delegation bei der UN Open Source Week | Sovereign Tech…
Zu Open Source Week der Vereinten Nationen bringen wir eine Delegation von 12 Open-Source-Expert*innen zusammen, deren Arbeit die digitale Infrastruktur,…
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Reposted by Matthias Klumpp
Sovereign Tech Agency @sovereign.tech · 24/04/2025
In case you missed it last week, here’s the first of a series of in-depth interviews from the first cohort of the Sovereign Tech Fellowship. Open source maintainer Sarah Hoffmann loves to discover beautiful places IRL – and in code: www.sovereign.tech/news/meet-sa... #MaintainerSpotlight
Portrait of Sarah Hoffmann holding a microphone sitting red movie-theater style seatingDark text on light background: "Meet Sovereign Tech Fellow Sarah Hoffmann"Picture of newly ripened small red strawberries with greenery in the background
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Matthias Klumpp @mklu.bsky.social · 21/03/2025
The Intan stuff can likely be made working by using the arm64 version of OpalKelly's frontend for the FPGA. The rest should work for smaller experiments with little video encoding or large data ingestion on a Pi. Complex stuff (and AI things...) will likely need a ODROID-M2 or Jetson board. 2/2
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Matthias Klumpp @mklu.bsky.social · 21/03/2025
It should work, and we build & distribute an arm64 version, but we haven't tested it yet on a RPi specifically (caveats will definitely be the RAM demand, slow storage of the Pi, possibly slow video encoding, and for Intan ephys hardware the missing arm64 support) 1/2
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Matthias Klumpp @mklu.bsky.social · 06/02/2025
I am very honored to be part of the first Sovereign Tech Fellowship program! This will directly support my work on #FreeDesktop, #AppStream and #PackageKit, so expect a lot more changes faster, and also way faster patch reviews. Also check out the amazing program and the other fellows!
sovereign.tech
Meet the Sovereign Tech Fellows | Sovereign Tech Agency
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Matthias Klumpp @mklu.bsky.social · 20/01/2025
I also want to thank the great projects we depend on, like @kde.org, #FFmpeg, Eclipse #Iceoryx, OpenCV, #MicroPython, and so many more! Kudos to hardware vendors with open libraries for their devices, and especially efforts like the UCLA Miniscope and #OpenEphys! You rock! 8/9
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Matthias Klumpp @mklu.bsky.social · 20/01/2025
Last, but absolutely not least, I want to thank everyone who collaborated on the publication and helped get it over the finish line, especially the group of @grohlex.bsky.social. This was a team effort and I am so proud of the result we achieved! 7/9
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Matthias Klumpp @mklu.bsky.social · 20/01/2025
No time to read the paper? Syntalos is also thoroughly documented and some short video tutorials are available to get you started with using the software! It is also already in use by many labs. Check out our website at syntalos.org! 6/9
syntalos.org
Syntalos
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Matthias Klumpp @mklu.bsky.social · 20/01/2025
You can download the open-access paper from @naturecomms.bsky.social here: nature.com/articles/s41... It is written with a focus on the users of the software and contains many example experiments, as well as a thorough validation of the performance claims we make about the software! 5/9
nature.com
Syntalos: a software for precise synchronization of simultaneous multi-modal data acquisition and closed-loop interventions - Nature Communications
Complex experimental protocols often require multi-modal data acquisition with precisely aligned timing, as well as behaviour-dependent interventions. Here, authors describe a software with an intuiti...
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Matthias Klumpp @mklu.bsky.social · 20/01/2025
Syntalos' multithread-/multiprocess-based design is optimized to reduce latency and improve robustness. The software is #opensource running on the #Linux operating system, allowing insight into every single step of the data acquisition pipeline. 4/9
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Matthias Klumpp @mklu.bsky.social · 20/01/2025
In addition to that, its module-based intuitive UI to design DAQ schemes and integration of native #Python allows it to be extended easily for a wide array of data-acquisition and closed-loop intervention tasks. For many experiments, no programming skills are needed at all! 3/9
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Matthias Klumpp @mklu.bsky.social · 20/01/2025
Many devices used in #biosciences do not allow hardware-level time synchronization, while integrating data from multiple sources becomes increasingly important. #Syntalos provides a novel statistics-based algorithm to keep timestamps in sync over long recording times. 2/9
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Matthias Klumpp @mklu.bsky.social · 20/01/2025
I am excited to announce our publication of "Syntalos" in @naturecomms.bsky.social: A software to easily and reliably record from multi-modal data sources and design closed-loop interventions, with a focus on (neuro)scientific experiments, all while keeping timestamps synchronized! 🧵1/9
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