All about me. My Bio.

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  • 32 Comments
Joined 1 year ago
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Cake day: July 2nd, 2023

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  • This is more complex than you’d think because the USB spec has changed many times over the years, with updates in the connectors used, along with other sub-category changes to cables too. So there’s USB versions 1, 2, 3, and 4 (and sub-versions too), along with different types of connector, eg. USB-A comes in regular and V3 (blue inside), and USB-C which is the later. Newer specs can transfer much larger amounts of data. Power Delivery (PD) is another sub-set of specification, which currently allows up to 240W of power with USB4, that’s a lot, enough to charge multiple laptops at once, vastly more then the 2.5W allowed for USB 3. For more confusion there is also USB Power Delivery Programmable Power Supply, which is a sub-set to help devices negotiate charging speeds.

    Another challenge - USB-C connectors can also support Thunderbolt, which gives it a whole other set of capabilities. This depends on both the cable and the port.

    This explains that mess that is USB-C: https://www.androidauthority.com/state-of-usb-c-870996/

    Key part:

    The latest USB data speed protocols are split into several standards. There are legacy USB 1.0 and 2.0, USB 3.0, USB 3.1, USB 3.2, and the latest USB 4.0, all of which can be supported over USB-C. Confusing enough, but these have since been revised and updated to include various sub-standards, which have encompassed USB 3.1 Gen 1, USB 3.1 Gen 2, and USB 3.2 Gen 2, along with the more recent USB 3.2 Gen 1×1, USB 3.2 Gen 1×2, and USB 3.2 Gen 2×2 revisions. Good luck deciphering the differences without a handbook. Hopefully, the graph below helps.

    You’d hope USB4 fixes it, but no. USB4 already boasts Gen 2×1, Gen 2×2, Gen 3×1, Gen 3×2, and Gen 4 variations, with data speeds ranging from 10 to 80 Gbps.

    Cable lengths can also have an impact. The spec only allows for a specific length after which you need active cables, which include chips in them to strengthen the signal.

    Several years ago a Google engineer started buying USB-C cables from Amazon and reviewing them in a lot of detail: https://www.amazon.com/gp/profile/amzn1.account.AFLICGQRF6BRJGH2RRD4VGMB47ZA

    If you read some you’ll see there are plenty of manufacturers who just don’t even stick by the rules, so it’s not always clear what you’ll actually get. It doesn’t help either that some products also don’t play by the rules and have custom sockets that need specific vendor cables. I’ve had keyboards, for example, that only work with their specific vendor cables, not general USB-C ones.

    This means you need to stick to a reputable set of brands, or the cables that came with the product. Decide if you need to charge something serious with it - eg. laptop, vs just a phone, watch, or small device, or whether you need data connectivity.

    As another poster mentioned, just buy Anker, they’re well made come with a reputable warranty, and aren’t actually that expensive. Don’t buy the cables you find by the supermarket/CVS checkout, or some ultra-cheap site. They might work, they might not.

    Oh, and the Google engineer had his laptop fried by bad cables: https://www.engadget.com/2016-02-03-benson-leung-chromebook-pixel-usb-type-c-test.html




  • Last time my dishwasher died I just had to take it had and clean the pump underneath. Basically the connections apart under and had to just scrub them out. One tiny bit of plastic was gumming it up, causing some checks to fail. Stopped it running.

    They’re surprisingly simple machines.

    For Samsung I always buy the extended warranty. For our washer and dryer Assurion must have spent a fortune keeping them running. A lot more than I ever did to guy them. They’re only 8 years old too. It’s sad, but for Samsung they work nicely but fail frequently,

    For your next one but Bosche. They’re all good, get a base model and it’ll clean well and reliably.


  • Given this is !privacy and the advertise as front page features both “works will all your messaging apps” and “end to end encryption”, it seems important to flag currently those aren’t mutually compatible.

    It’s not their fault the apps don’t have e2e APIs, it’s a tough problem, but the secrecy and privacy guarantee is just “trust us to stick to our policy”. And they’re a start-up, tooling isn’t perfect (or even exist), mistakes happen, etc

    Their self-hosting looks interesting, but then it said to use your own clients too, which took the fun out of that.










  • Depends a lot on your existing reverse proxy.

    You can read the nginx config that the defaults include and it’s some basic rules to route incoming requests to either lemmy or lemmy-ui. If your existing reverse proxy is nginx you could just incorporate the rules in there.

    It also depends on why you need it behind the existing proxy, and how you’ll choose to route your traffic, and where you traffic is coming from in general.

    I’d start with taking a look at the default nginx config to see if you can move those rules to your existing reverse proxy, or just forward everything coming in that’s for lemmy straight to the lemmy reverse proxy, although that might be more complicated in correctly preserving the incoming requests.


  • Many years ago working for a monitoring software company someone had found a bug in the uptime monitoring rules where they reset after a year.

    It was patched and I upgraded one client and their whole Solaris plant immediately went red and alerted. They told me to double it to two years and some stuff was still alerting.

    They just said they’d try to get around to rebooting it, but it was all stable.

    Everywhere else I’ve worked enforces regular reboots.