4 ms·
USB-PD hubs are very annoying. Devices with no battery on a hub (Raspberry Pi etc) will just get hard rebooted if anything else gets plugged into the same hub.
by geor9e 1y ago
USB-PD hubs are very annoying. Devices with no battery on a hub (Raspberry Pi etc) will just get hard rebooted if anything else gets plugged into the same hub. I looked at a lot of hubs and they all behaved this way. They all cut power to everything, then re-negotiate the power allowance each device gets from the shared wattage, every time anything new connects. I could not find a hub that honored existing power contracts and gave new devices the remainder. My guess is the average customer expect the newest plugged in device to get max power (at the expense of everything else) or they return it to the store thinking it's broken.
- sciencerobot 1y agoI’m not sure if it’s a USB-PD hub but Jeff Geerling posted a video about a USB-C charger that doesn’t suffer from the renegotiation issue https://m.youtube.com/watch?v=dG2v4FHwJjE https://m.youtube.com/watch?v=dG2v4FHwJjE
- k8sToGo 1y agoNot the case anymore with more modern chargers e.g. Anker GaN
- mrheosuper 1y agoeven the new anker zolo 140w suffer the same issue.
- k4rli 1y agoCan confirm. Recently purchased ugreen nexode gan 100w has the same issue. https://www.amazon.de/-/en/gp/aw/d/B0CYT1VVMV https://www.amazon.de/-/en/gp/aw/d/B0CYT1VVMV Other than that it seems to work fine. Even though it's only 100W I haven't had to use the Dell 130W charger in a while.
- mystifyingpoi 1y agoUnfortunately there is no real solution to this, that would work in general case. With renegotiation, the power gets cut off, but most likely every device will get the allowance and all of them will still charge. With no renegotiation, a newly plugged in device might not charge at all. Not sure what's worse.
- Daneel_ 1y agoThere is a clean solution: A toggle switch. Why does all modern equipment take control away from the user?