• Short tip: Shelly Plug does not find newer firmware

    calendar Dec 4, 2021 · 1 min read · kurztipp  ·
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    The Shelly Plug WLAN socket adapters from the Bulgarian manufacturer Allterco are very popular. They are inexpensive and - unlike other alternatives - also allow switching without cloud constraints via their own MQTT broker. However, some devices come with severely outdated firmware, for which the search for updates …
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  • AppImage, Flatpak und Snap in comparison

    calendar Dec 1, 2021 · 8 min read · appimage flatpak snap  ·
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    For installating software, Linux has always offered various possibilities. For example, there is always the possibility of manual compilation using the well-known rule of three (configure, make, make install) - including all the advantages and disadvantages. However, the most convenient solution is using the …
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  • 30 years Linux - my personal retrospect

    calendar Aug 25, 2021 · 10 min read  ·
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    30 years ago today, a Finnish student presented a project in the then still very prominent Usenet. It was Linus Torvalds and the talk was about a small UNIX-like operating system which ran mainly on cheap 386/486 AT clones. Linus was interested in UNIX, but like most students and hobbyists at the time, could not afford …
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  • Keychron K8 - cheap hotswap keyboard

    calendar May 11, 2021 · 6 min read · mechanical-keyboard  ·
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    After more than one year of collective home office I was looking for a keyboard that as silent as possible but still allows unresting typing. As a mechanical keyboard enthusiast, conventional rubberdome keyboards were not an option. Luckily, there are plenty of options available.

    The range of mechanical keyboards is …


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  • Oracle Linux Manager 2.10: First impressions

    calendar May 5, 2021 · 6 min read  ·
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    Nach der Einstellung des Spacewalk-Projekts durch Red Hat im Mai 2020 entschied sich neben SUSE auch Oracle für einen Fork der quelloffenen System Management-Software.

    <img
  loading="lazy"
  decoding="async"
  alt="Overview" …</picture></figure></p>

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  • Short tip: Java applications and HiDPI

    calendar May 2, 2021 · 1 min read · kurztipp  ·
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    Legacy software is often used longer than planned. Running older Java software on high-resolution displays with more than 1080p is quite hard by default.

    To fix this, manually setting scaling via command-line pararameters is sufficient:

    1$ java -Dsun.java2d.uiScale=3.5 -jar app.jar

    In this case, 3.5x or 350% scaling is …


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  • Volla Phone: Android privacy phone without Google

    calendar Mar 18, 2021 · 8 min read  ·
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    With more than 60% market share Android devices are dominating the smartphone market for a long time. But the most devices have one in common: a nosy operating system that likes to experience as much as possible about the user.

    Hallo Welt Systeme UG - a german startup from Remscheid - aims to change this. With the …


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  • New year, new PC - based on AMD Ryzen

    calendar Feb 21, 2021 · 4 min read · popos  ·
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    After roughly 8 years it was time to upgrade my desktop computer. Even though I already upgraded the graphic card two times in the mean time, processor and memory resources reached their limits. Especially computing intensive tasks and newer video games were slowd down. Fortunately, things have changed a lot in the …
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  • Open Source Automation Days 2020 - Virtual Diversity

    calendar Dec 1, 2020 · 9 min read · conference  ·
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    2020 is not only the product of a fivefold 404 but also the big year of online conferences. While conferences were previously held in particularly conspicuous or unusual locations and invited people to join the physical network, this year online platforms in particular serve as a necessary compromise.

    One of the …


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  • Short tip: Convert SLES4SAP 12 to SLES 12

    calendar Nov 11, 2020 · 2 min read · kurztipp sles  ·
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    While there are scripts for migrating SLES to SLES4SAP, there are no tools the other way around. If you deployed the wrong template by mistake you can change the product without reinstallation with some manual steps. A comparable procedure has also been documented by the vendor for installing SUSE Manager.

    First of …


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