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There is little I doubt that the Raspberry Pi 4 is one of the most exciting launches we've seen this year, but its design is rather strange.
Users have noticed that the single-card computer, the first to boast of having a USB-C port, maintains a rather strange relationship with some cables.
In theory, all USB-C cables are created in the same way, but we all know that it's not that simple. the deployment of the standard has been fraught with difficulty and confusion, and it seems that Pi 4 has fallen into fault.
Users indicated that it appeared that their units would not work because of the cables that they used. Eben Upton, who co-created the Pi, has now admitted that he was to blame for a "weird" design involving a feature called electronic tagging.
Electronic tagging is a technique that gives the cable a digital signature based on what the cable will do. However, when it is used with a smart charger, the e-mark can give a false positive, forcing the cable to "see" the Pi as an audio accessory and not as an item to be powered.
The bad news is that the team can not do anything about it until the next hardware review: the whim is built into the hardware. Upton said Tech Republic: "I hope that will be corrected in a future review of the board, but for now, users will have to apply one of the suggested workarounds.
"It is surprising that this did not appear in our field test program (quite extensive)."
In the meantime, you need to make sure that you are using a standard standard USB-C cable without electronic marking (good luck knowing which cables are which) and a charger that provides a continuous 5V 3A power supply – you note that your phone probably uses a little more than 2.4A.
Raspberry Pi manufactures an official charger and cable, and for eight pounds, it's probably easier to buy one. It's just one of those things because the Pi 4 is too good to be cushioned for a minor flicker like this. μ
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