Thanks for that. I did notice that the Pi does actually power the monitor on if no other peripherals are plugged in but I was getting over voltage errors. It's not an issue powering the monitor separately but it is like both devices are trying to send the other power as i would still occasionally get that error on either device.Just in case this helps.
I have a 15.6" touchscreen portable monitor. I can power it and provide touch input through one of the RPI 5's USB ports going to the portable monitors USB-C. Not video just power the monitor and touch input to the RPI 5. When I query how much power the monitor is using from the RPI 5 it shows as 400 ma. For video I use HDMI.
What kind of cables are you using?
For some reason which I have not figured out yet FPC cables dont seem to work for any of the setups I have tried with the RPI 5.
I'm using completely standard cables you'd get with phones etc. Definitely not brave enough to look at FPC etc yet! I did get a PoE hat and that would have been perfect if the Pi could have powered the screen! I'm guessing my specific monitor needs too much power (5v 2A) but the active adaptor i bought also injects exactly that power along with the video signal so i had hoped would achieve the same thing via the adaptor.
Statistics: Posted by moophy — Sat Jan 11, 2025 1:16 am