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Cake day: February 10th, 2024

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  • USB-C video is usually DisplayPort Alt Mode, which uses a completely different data rate and protocol from USB.

    Even using old 2016 hardware, a computer and USB-C cable that both only support 5 Gbps USB (such as USB 3.1 Gen 1) can often easily transmit an uncompressed 4K 60Hz video stream over that cable, using about 15.7Gbps of DisplayPort 1.2 bandwidth. Could go far higher than that with DP 2.0.

    Some less common video-over-USB devices/docks use DisplayLink instead, which is indeed contained within USB packets and bound by the USB data rate, but it uses lossy compression so those uncompressed numbers aren’t directly comparable.


  • zarenki@lemmy.mltoTechnology@lemmy.worldSome basic info about USB
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    8 days ago

    For that portable monitor, you should just need a cable with USB-C plugs on both ends which supports USB 3.0+ (could be branded as SuperSpeed, 5Gbps, etc). Nothing more complicated than that.

    The baseline for a cable with USB-C on both ends should be PD up to 60W (3A) and data transfers at USB 2.0 (480Mbps) speeds.

    Most cables stick with that baseline because it’s enough to charge phones and most people won’t use USB-C cables for anything else. Omitting the extra capabilities lets cables be not only cheaper but also longer and thinner.

    DisplayPort support uses the same extra data pins that are needed for USB 3.0 data transfers, so in terms of cable support they should be equivalent. There also exist higher-power cables rated for 100W or 240W but there’s no way a portable monitor would need that.



  • The whole point of copyright in the first place, is to encourage creative expression, so we can have human culture and shit.

    I feel like that purpose has already been undermined by various changes to copyright law since its inception, such as DMCA and lengthening copyright term from 14 years to 95. Freedom to remix existing works is an important part of creative expression which current law stifles for any original work that releases in one person’s lifespan. (Even Disney knew this: the animated Pinocchio movie wouldn’t exist if copyright could last more than 56 years then)

    Either way, giving bots the ‘right’ to remix things that were just made less than a year ago while depriving humans the right to release anything too similar to a 94 year old work seems ridiculous on both ends.


  • a variable-length integer encoding that somewhat resembles what they do in UTF-8. It means for strings < 128 chrs, the length is a single byte. Longer than that and more bytes get used as necessary.

    What you used might be similar to unsigned LEB128, which is used in DWARF, Webassembly, Android’s DEX format, and protobuf. Essentially encodes 7 bits of the number in each byte, with the high bit being 1 in any byte except the last one representing the number.

    Though unlike UTF-8 the number’s length isn’t encoded in the first byte but instead implied by the final byte. Arguably making the number’s encoding similar to a terminated string.



  • zarenki@lemmy.mlto196@lemmy.blahaj.zoneRulekemon
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    28 days ago

    The baby god event was never officially released, so this actually didn’t canonically happen.

    It was released. The Azure Flute and the event where you meet and battle Arceus in the Hall of Origin in DPPt was indeed never released, but this is different.

    Arceus had various distributions in 2009-2010; the US one was at Toys R Us for example. Trading that legit Arceus to HGSS and then bringing it to the Ruins of Alph triggers this event which takes you to a special location where you can choose one egg of either Dialga, Palkia, or Giratina.



  • The conditions that processors run under in situations like military equipment are drastically different from those of consumer devices. Consistency and stability are more important than performance in those contexts. So much so that RTOS systems like VxWorks are popular in that space. They’d probably already have features like clock boost disabled (or use processors completely lacking it) in favor of a lower fixed clock speed, probably avoiding these issues entirely.


  • Legitimately playing 4K blu-ray video on a PC without cracking the DRM requires an insane combination of requirements:

    • Windows 10 (not 11)
    • An Intel processor between gen 7-10 (nothing newer because Intel ditched SGX in 2021)
    • Intel integrated graphics (no nvidia/amd)
    • Monitor that supports HDCP 2.2 for DRM (some 4k ones don’t)
    • An approved optical drive
    • Proprietary playback software which costs about $100 USD, separate from the cost of hardware and Windows
    • Miscellaneous other requirements for the motherboard features, bios settings, etc.

    Meanwhile MakeMKV can rip them on basically any Windows/Linux/Mac system with a compatible BDXL drive.


  • Likewise, I’m far less hesitant to accept buying digital console games than video because I generally can expect that once I download a game on my one device that I’ll pull out the same device whenever I want to play it and it’ll keep working when offline and even after the servers are gone, until the hardware fails. Modern games’ physical releases rely so heavily on updates and DLC that the cart/disc you get isn’t complete anyway; buying physical effectively becomes a digital game with an extra point of failure (and partial resellability). PC gaming complicates things but at least some games are available completely DRM-free there.

    With video content sold online, streaming directly from some server is always the focus. As soon as the server disconnects you become unable to watch by default. Even if some service lets you pre-download within its app and watch offline (which probably won’t work indefinitely without checkins anyway), that’ll defeat the portability expectations for watching your videos on any device interchangeably.

    Blu-ray video isn’t ideal considering you cannot watch it on a phone, tablet, or linux system without cracking its DRM, but that’s still way better for lasting access than anything else major movie/TV studios are willing to let consumers access without piracy.


  • I bought a Milk-V Mars (4GB version) last year. Pi-like form factor and price seemed like an easy pick for dipping my toes into RISC-V development, and I paid US$49 plus shipping at the time. There’s an 8GB version too but that was out of stock when I ordered.

    If I wanted to spend more I’d personally prefer to put that budget toward a higher core system (for faster compile times) before any laptop parts, as either HDMI+USB or VNC would be plenty sufficient even if I did need to work on GUI things.

    Other RISC-V laptops already are cheaper and with higher performance than this would be with Framework’s shell+screen+battery, so I’m not sure what need this fills. If you intend to use the board in an alternate case without laptop parts you might as well buy an SBC instead.


  • This board has the StarFive JH7110 SoC. That processor has previously been in very low power single board computers like StarFive VisionFive 2 (2022) and Milk-V Mars (2023), a Raspberry Pi clone that can be bought for as low as $40. Its storage limitations (SD/eMMC rather than NVMe) show how much this isn’t meant for laptop use.

    Very underpowered for a laptop too, even when considering this is intended for developers and doesn’t need to be remotely performance competitive. Consider that this has just 4 RV64GC cores, the cheapest Intel board options Framework offers are 12 cores (4P+8E), and any modern RISC-V core is far simpler with less area than even an Intel E core. These cores also lack the RISC-V vector instructions extension.




  • zarenki@lemmy.mlto196@lemmy.blahaj.zone📄 rule
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    4 months ago

    and it’s free

    This is very uncommon in the US. Most major banks (I’m not aware of any exceptions) charge a fee for each outgoing wire transfer, usually $25-$30. Bank of America, Wells Fargo, Chase, and PNC for just a few examples I’m aware of, plus every credit union that has local branches in my area. Some of those banks even add a second fee at the recipient’s side for incoming wire transfer.

    They often encourage customers to rely on third party services like Zelle instead for small transfers to friends and family. Many banks’ sites/apps can also handle transfers between two accounts that both belong to the same bank for free too.


  • Even their earliest “uncarrier” features weren’t without issue. Making certain services (spotify, apple music, youtube, netflix, etc.) not count against subscribers’ data caps, while continuing to enforce data caps for other uses, goes against the spirit of net neutrality. This also includes throttling video streams by default to force lower quality (with opt-out on their site).

    Promos like a free pizza on Tuesdays seems like a neat optional perk on the surface but their existence fundamentally mean subscription expenses on cellular network service are partially going towards things that have not even the slightest tangential connection to the service.


  • A standard called SystemReady exists. For the systems that actually follow its standards, you can have a single ARM OS installation image that you copy to a USB drive and can then boot through UEFI and run with no problems on an Ampere server, an NXP device, an Nvidia Jetson system, and more.

    Unfortunately it’s a pretty new standard, only since 2020, and Qualcomm in particular is a major holdout who hasn’t been using it.

    Just like x86, you still need the OS to have drivers for the particular device you’re installing on, but this standard at least lets you have a unified image, and many ARM vendors have been getting better about upstreaming open-source drivers in the Linux kernel.


  • To the contrary, I would expect the sample to skew more towards people who have a heavily customized X session and strong opinions about window managers while drastically underrepresenting average GNOME users who stick with the default Wayland session. Someone who likes their custom setup can still be waiting for a Wayland equivalent while casual Ubuntu users have been defaulted to Wayland on new non-nvidia installs since early 2021.


  • It is a Linux machine. Runs a Debian derivative, and it’s not like Windows or anything else that isn’t Linux/BSD can run on a RISC-V laptop.

    This isn’t the first RISC-V laptop, but the significance of a RISC-V laptop existing is primarily for developers who work on software targeting RISC-V systems. The ability to run RV64 programs without emulation and to natively compile RV64 software without cross-compilers is valuable to some people. Also, China in particular sees value in having computing products that aren’t affected by sanctions; the processor in this is designed and manufactured by a Chinese company without licensing any intellectual property from US or UK.

    Explaining what RISC-V is

    RISC-V is a relatively newer CPU instruction set architecture that competes with x86 (Intel, AMD) and ARM (Qualcomm, Ampere, MediaTek, etc.). Its current designs don’t really match those two in general-purpose performance yet but has the distinction of being a free, open, and extendable standard. Whereas x86 has only two CPU vendors and ARM has many vendors who all need to pay per-core license fees to ARM Holdings and have limits imposed on what they can do to it, RISC-V processors can be made by any hardware vendor with the means to make a processor and can be custom-designed to better fit specialized use-cases. Its use in general-purpose CPUs is catching on fastest in China but it sees use across the world in academia and in special-purpose processors by companies like Western Digital.