Re:Raspberry Pi 4 not working with some chargers
by JshWright on Friday July 05, 2019 @09:45AM
(#20362441)
The other reason for is that the developers of the USB-C specifications left us with a terrible confusing mess where visually identical cables have different capabilities and behaviors.
Re:Raspberry Pi 4 not working with some chargers
by derefr on Friday July 05, 2019 @10:50AM
(#20362915)
If it’s confusing, just don’t use it. They could have stuck with a micro-B charger, or a custom charger, and no one would have questioned it. Instead, they decided they were confident enough in their understanding of USB-C to implement it on their device. And they were wrong.
Re:Raspberry Pi 4 not working with some chargers
by TremendousJudge on Friday July 05, 2019 @11:46AM
(#20363418)
>They could have stuck with a micro-B charger
Somebody here said they were running into the maximum rated current for the port
>or a custom charger
Literally everyone would have complained
Re:Raspberry Pi 4 not working with some chargers
by tracker1 on Friday July 05, 2019 @01:39PM
(#20364273)
I don't think anyone would complain much if they supported a popular barrel connector with a popular power draw. As it stands, I'll only ever use a Pi with a charger sold as working with it after all the 3B+ issues I had (7 chargers, none worked without a warning on screen).
Re:Raspberry Pi 4 not working with some chargers
by JshWright on Friday July 05, 2019 @11:02AM
(#20363010)
I said the "other" reason. I am not absolving the RPi team here...
The fact that they shipped this reveals significant gaps in their engineering and QA processes.
That doesn't change the fact that USB-C is a mess, and that mess contributed to this failure.
Re:Raspberry Pi 4 not working with some chargers
by mbilker on Friday July 05, 2019 @12:10PM
(#20363600)
The article states it is an issue with an eMarked cable, not the charger. With a different cable, the Pi 4 started up with the same chargers as it was no longer detecting the Pi as an analog audio accessory.
The issue still lies with the Pi 4 for not having two CC resistors.
The reason is that the developers of the Pi4 made a mistake while designing the electronic circuit. They tried to design it themselves instead of copying it from the specification.