keyboard and usb-c
06-11-2022, 04:26 AM
(This post was last modified: 06-11-2022, 04:29 AM by theResonant.)
On postmarketOS, when the keyboard is not attached, the USB-C hub obviously works well with the phone (peripherals + HDMI), but only when external power is fed into the hub. This restriction is probably imposed by the OS.
When the keyboard is attached, I never tried the hub in the phone's USB connector (there's waaay too much ambiguity everyhwere I've read), but connecting the hub to the keyboard's USB connector does not work at all. Even if the keyboard is providing power (I pressed its button to start charging the phone).
I'm assuming the following should work, but I've never tried: to connect the hub to the phone's port, without feeding external power into the hub, but enabling power from the keyboard alone. That's because the keyboard battery is wired directly to the phone's USB power line, so the hub will act as if it is powered from the phone, and the phone will not send power to the port at all, relying on the keyboard only?
It's almost as if the OS is already smart enough to make this work, it looks like it, but I'm too worried to try. Would this make sense?
When the keyboard is attached, I never tried the hub in the phone's USB connector (there's waaay too much ambiguity everyhwere I've read), but connecting the hub to the keyboard's USB connector does not work at all. Even if the keyboard is providing power (I pressed its button to start charging the phone).
I'm assuming the following should work, but I've never tried: to connect the hub to the phone's port, without feeding external power into the hub, but enabling power from the keyboard alone. That's because the keyboard battery is wired directly to the phone's USB power line, so the hub will act as if it is powered from the phone, and the phone will not send power to the port at all, relying on the keyboard only?
It's almost as if the OS is already smart enough to make this work, it looks like it, but I'm too worried to try. Would this make sense?