this post was submitted on 13 Jul 2025
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Showerthoughts

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A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. The most popular seem to be lighthearted clever little truths, hidden in daily life.

Here are some examples to inspire your own showerthoughts:

Rules

  1. All posts must be showerthoughts
  2. The entire showerthought must be in the title
  3. No politics
    • If your topic is in a grey area, please phrase it to emphasize the fascinating aspects, not the dramatic aspects. You can do this by avoiding overly politicized terms such as "capitalism" and "communism". If you must make comparisons, you can say something is different without saying something is better/worse.
    • A good place for politics is c/politicaldiscussion
  4. Posts must be original/unique
  5. Adhere to Lemmy's Code of Conduct and the TOS

If you made it this far, showerthoughts is accepting new mods. This community is generally tame so its not a lot of work, but having a few more mods would help reports get addressed a little sooner.

Whats it like to be a mod? Reports just show up as messages in your Lemmy inbox, and if a different mod has already addressed the report, the message goes away and you never worry about it.

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[–] onslaught545@lemmy.zip 6 points 1 day ago (1 children)

It's not a failure to default to a safe level if it can't negotiate properly. That's a feature.

[–] rumba@lemmy.zip 1 points 1 day ago (1 children)

That's if the manufacturer doesn't just install a max wattage chip in every cable.

Unfortunately this is not uncommon.

[–] onslaught545@lemmy.zip 1 points 1 day ago* (last edited 1 day ago) (1 children)

I'm not extremely familiar with the USB-C handshake, but isn't it between the device and power supply?

[–] rumba@lemmy.zip 1 points 1 day ago

It used to be that simple. You could put a certain value of resistor between two pins and that was that.

This guy covered it quite well

https://superuser.com/questions/1555520/what-can-a-program-find-out-about-a-usb-c-cable-attached-to-the-computer

In brief, Type-C cable specs are nearly independent from USB data and USB Power Delivery (Type-C can support anything).

By specs, Type-C connector/cable provides two methods of self-identification.

First one is by combination of resistor pulls-up and pulls-down on both sides of CC wires. Since there are two CC pins in Type-C connectors, and several analog levels, many combinations are available. Other than connect function itself and basic determination of source-sink roles and power capacity, several "alternate" functions are defined, as Display Port, Audio, and Debug mode.

The second amendment to Type-C is the mandatory embedding of e-markers into every C-C cable. >The information in e-marker contains name of manufacturer and current carrying capability of particular cable.

The state of CC1/CC2 pins is usually acquired by a special CC-controller chip. The CC-controller communicates with main system by I2C interface. The register-based interface is standardized in Intel document USB Type-C Connector System Software Interface Specification

So, many manufacturers are including markers with maximum settings that exceed the wires'/cables' capability.