u/lukmly013 💾 (lemmy.sdf.org)

I like computers, trains, space, radio-related everything and a bunch of other tech related stuff. User of GNU+Linux.
I am also dumb and worthless.
My laptop is HP 255 G7 running Manjaro and Linux Mint.
I own RTL-SDRv3 and RSP1 clone.

SDF Unix shell username: user224

  • 6 Posts
  • 145 Comments
Joined 2 years ago
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Cake day: June 17th, 2023

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  • the so-called Chromebook Challenge includes students sticking things into Chromebook ports to short-circuit the system.

    I am rather surprised that works. I thought any modern device would have overload protection in place. I think I even remember accidentally tripping it on some device, but it would just reset after reboot.
    I also tried to see the max output current of my previous phone this way. Load it up till the protection trips. Result: Stable up to 2.1A, tripped at 2.5A.

    Oh, yeah. A Xiaomi phone charger I have also shuts down if I either overload it or immediately load it near max rating rather than gradually increase the load.




  • Time to calculate how much 1 marshmallow is worth in time considering minimum wage in my country.

    Let’s begin.
    Minimum wage in Slovakia is €4.69/h.
    An 80g bag of Jojo marshmallows is €1.19 at Tesco.
    It claims one portion is 3 marshmallows which is 11.7g.
    Therefore 1 marshmallow is 3.9g.
    Therefore there are 20 - 21 marshmallows in the bag.
    Therefore 1 marshmallow costs roughly €0.058.
    €4.69/h is €0.078/m or €0.0013/s.
    Therefore, 1 marshmallow costs roughly 44.62 seconds of work time.

    Well, assuming there are no taxes. So maybe something close to 1 minute per marshmallow. Although… maybe if we add total time, including time you’re not working… 12 marshmallows an hour, 288 a day, 2016 a week, 8640 a month. That’s €501.12/month.

    Based on this the minimum monthly wage after taxes and all is €661.80/month.

    Conclusion: It is worth the 5 minutes.





  • I quite like my ancient inkjet HP. Keeps printing with “empty” cartridge just fine, and the bottle of ink from AliExpress lasts a long time even if drenching paper with dark mode documents.
    I paid 71 cents on sale for 500ml of ink, though it’s otherwise around 20 bucks. Still worth it.

    Now, there may just be one problem for most, it doesn’t work with Windows anymore. HP website doesn’t provide drivers saying they get automatically installed by Windows. Windows says it can’t find drivers and to use manufacturer’s website.

    But it works with HPLIP on Linux.

    Oh, and 1 more thing. There’s a high DPI mode that can almost match laser in sharpness. But, it takes 20 minutes per page. Yes, not a typo.











  • They also treat their phone like a capricious deity- they’re afraid to touch anything.

    Considering that there was a MIUI bug that would soft-brick the phone if you set minimum width to a too large value (smaller display size), or if you disabled “MIUI optimization”, or perhaps even installed a bad update, maybe better to be careful. But MIUI was really on the extreme with bugs.

    I didn’t personally experience those, though I only played with the display size and only updated once, as MIUI 13 had way too many known bugs. But I found there was some, though not large chance of SD card corruption if I didn’t “Eject” it before reboot.

    But to be fair, the optimization and minimum width are both in Developer settings.

    As for (possibly) permanent things, from my mind:

    • Basically anything in MTK Engineer mode or other dialer-accessible secret menus (hidden just like Developer settings)

    • That time Samsung disabled band mode selection with an update, but the settings wouldn’t reset thus remaining locked however they were set by the user (probably not used by regular users, but just like with MTK EM, there were apps to access this without special codes)

    • And lastly one that may actually impact regular users who utilize eSIM adapters (e.g.: eSTK, JMP, 5ber, 9esim):

    https://osmocom.org/projects/pysim/wiki/UE_behavior_with_plastic_eUICC

    eUICC is recognized and listed by internal SIM manager; switching profiles on a sysmoEUICC1-C2T resulted in an error which made that plastic eUICC disappear from both the built-in SIM manager as well as EasyEUICC-SGP.26. Moving that same eUICC to another phone works just fine. However, moving that eUICC back to the Pixel 4a 5G shows the problem persists. Even another sysmoEUICC1-C2T would not even be recognized by EasyEUICC anymore. Its almost as if the plastic-eUICC functionality has been bricked