What was your last RTFM adventure? Tinker this, read that, make something smoother! Or explodier.

As for me, I wanted to see how many videos I could run at once. (Answer: 60 frames per second or 60 frames per second?)

With my sights on GPUizing some ethically sourced motion pictures, I RTFW, graphed, and slapped on environment variables and flags like Lego bricks. I got the Intel VAAPI thingamabob to jaunt by (and found that it butterized my mpv videos)

$ pacman -S blahblahblahblahblahtfm
$ mpv --show-profile=fast
Profile fast: 
 scale=bilinear
 dscale=bilinear
 dither=no
 correct-downscaling=no
 linear-downscaling=no
 sigmoid-upscaling=no
 hdr-compute-peak=no
 allow-delayed-peak-detect=yes
$ mpv --hwdec=auto --profile=fast graphwar-god-4KEDIT.mp4
# fucking silk

But there was no pleasure without pain: Mr. Maxwell F. N. 940MX (the N stands for Nvidia) played hooky. So I employed the longest envvars ever

$ NVD_LOG=1 VDPAU_TRACE=2 VDPAU_NVIDIA_DEBUG=3 NVD_BACKEND=direct NVD_GPU=nvidia LIBVA_DRIVER_NAME=nvidia VDPAU_DRIVER=nvidia prime-run vdpauinfo
GPU at BusId 0x1 doesn't have a supported video decoder
Error creating VDPAU device: 1
# stfu

to try translating Nvidia VDPAU to VAAPI – of course, here I realized I rtfmed backwards and should’ve tried to use just VDPAU instead. So I did.

Juice was still not acquired.

Finally, after a voracious DuckDuckGoing (quacking?), I was then blessed with the freeing knowledge that even though post-Kepler is supposed to support H264, Nvidia is full of lies…

 ______
< fudj >
 ------
          \   ‘^----^‘
           \ (◕(‘人‘)◕)
              (  8    )        ô
              (    8  )_______( )
              ( 8      8        )
              (_________________)
                ||          ||
               (||         (||

and then right before posting this, gut feeling: I can’t read.

$ lspci | grep -i nvidia
... NVIDIA Corporation GM108M [GeForce 940MX] (rev a2)
# ArchWiki says that GM108 isn't supported.
# Facepalm

SO. What was your last RTFM adventure?

  • steeznson@lemmy.world
    5·
    2 months ago

    I was trying to write a custom Strategy for an objectMapper in Java. Foolishly decided to ask ChatGPT about it and got instructions which suggested an implementation that was the inverse of how Strategies actually work. Stuck for an afternoon.

    Then in the evening I read the docs and put it together in half an hour from scratch. Lesson learned about the stochastic parrots.

    • fool@programming.devOP
      5·
      2 months ago

      Hah, stochastic parrots.

      Makes me wonder. Every laziness I’ve had with the vector guessers, I’ve seen an exact counterweight.

      matrix scrombulator webpage (2007-2014)
      Here’s random code. Pray it works Free ancient code at man 3 getifaddrs.
      How does this API work? (when the API has below 10 million sample lines of code) Incredibly concise documentation worth spending 2 minutes on or HTML text without margin lines worth spending 20 minutes on
      Maybe this is what’s causing your bug. Investigate a, b, and c. Conclusion sentence. footnote in ArchWiki / archetypal 2009 StackOverflow duplicate
      Here’s the main idea of X… you need to take into account a combination of facets to ensure safety. Angry blog post about X that’s oddly technical (now you see both sides)

      One, you can invoke more often (throw ChatGPT configs against the wall until it doesn’t error); the other you can invoke more deeply. So I can’t help but wonder – when we cancel out all the terms – if the timesaving sum is positive or negative. ¯\_(ツ)_/¯

  • slazer2au@lemmy.worldEnglish
    5·
    2 months ago

    I have been burnt too many times by vendor incompatibility at work to not read the manuals before deploying something.

  • Diplomjodler@lemmy.world
    5·
    2 months ago

    I tried to install ROCM on my machine to run Stable Diffusion. So far I’ve managed to bork my system to the point of having to reinstall.

  • pancake@lemmygrad.ml
    4·
    2 months ago

    One of the largest projects under my GitHub account is an attempt at a proof-based programming language that I had to abandon because I underestimated the theoretical work involved, did not RTFM enough and months into it realized the entire thing was unsound af.

    • RobotZap10000@feddit.nlEnglish
      4·
      2 months ago

      I’m very intrigued. Could you please explain it? Even if you abandoned it, you still learned valuable knowledge.

      • pancake@lemmygrad.ml
        5·
        2 months ago

        Yes, that’s true and a better way to look at it, thanks!

        Well, I was amazed by proof systems like Coq or Isabelle, that let one formally verify the correctness of their code. I learnt Coq and coded a few toy projects with it, but doing so felt pretty cumbersome. I looked at other options but none of them had a really good workflow.

        So, I attempted to design one from scratch. I tried to understand Coq’s mathematical foundation and reimplement it into a simpler language with more familiar syntax and a native compiler frontend. But I rushed through it and turns out I had barely scratched the surface of the theory. Not just regarding the proof system, but also with language design in general.

        I did learn a lot though. Since then I’ve been reading more about proof systems and language design in my spare time, and I’ve collected quite the stack of notes and drafts. Recently I’ve begun coding a way more polished version of that project, so on to round two I guess!

        • fool@programming.devOP
          3·
          2 months ago

          Round two, hell yeah.

          The aesthetica of a stack of notes, born from a “dead end”, is secretly an odd motivator. You look back and see

          Here is the breadth of what we did wrong.

          and then beyond you, the effort lays itself out in a pretty trusswork.

          _or_maybe_i_just_think_well-used_notebooks_are_pretty

          • pancake@lemmygrad.ml
            2·
            2 months ago

            Haha yeah, absolutely! Might be too messy to consider it “well used” though… But it does motivate me, seeing all the signs I put there and imagining one day I will conquer that mountain. Maybe not even on the second attempt, but definitely one day.

  • Skunk@jlai.lu
    4·
    2 months ago

    Hardware related on a Linux home built NAS.

    My mobo has 2 nvme ports and supports 10th and 11th gen intel cpu. I have a 10th gen i5 and 2 nvme ssd for cache.

    The biggest 512Gb ssd is on the front (normal) side of the mobo, under a heatsink. The smaller 128Gb is under the mobo, inaccessible once fixed onto the case.

    In bios and in OS I can’t see the 512 cache drive, only the 128. Quick RTFM on the motherboard manual states: “Front nvme slot only works with 11th gen cpu”.

    FFS 🤦‍♂️

    The server is fully built in a hard to fit everything ITX case.

    Guess who is having only 128Gb cache instead of disassembling everything ?

  • not_amm@lemmy.mlEnglish
    3·
    2 months ago

    Couldn’t get the geolocation work for weeks in openSUSE. I, supposedly, read the manual and checked everywhere and even asked in the opensuse forum, since the timing was perfect with Mozilla shutting down MLS, and it probably was a reason, but also any other alternative didn’t work. Some days ago I decided to RTFM of geoclue again, only to find out that I could just “hardcode” my location in an /etc/geolocation file >:(

  • lnxtx@feddit.nlEnglish
    2·
    2 months ago

    No mention about the limited API in the Nessus Professional documentation.
    Waste of time trying to test API, debbuging why some method doesn’t work.