this post was submitted on 22 Nov 2023
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Discussion around the Framework mission of building products that last longer by making them upgradeable, customizable, and repairable. Consumer electronics can be better for you and for the environment.

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Charging FW 13 over USB-C While Outputting Display Signal (alien.top)
submitted 10 months ago by [email protected] to c/[email protected]
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I've been burned from this before so I want to make sure that if I bought a FW13 with a USB-C module that I could connect this to my USB-C monitor hub and then the connected FW port will handle charging, display signal out, and peripheral up/downstream? Realistically I'll be connecting just KVM to this single port but it being able to supply power to the laptop at the same time would be really nice.

I expect to be connecting other devices to their own dedicated USB ports (Arduino for example)

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[–] [email protected] 1 points 10 months ago

Yes, as long as the hub supports USB-PD charging, which most should.

[–] [email protected] 1 points 10 months ago

There are pass-through charging dongles for stuff like this. They usually work on all laptops that can charge over USB C.

[–] [email protected] 1 points 10 months ago

I am doing this just now. :-)

[–] [email protected] 1 points 10 months ago

It should work. That's how docking stations without MST hub works. DP stream and PD power.

[–] [email protected] 1 points 10 months ago

Yep!

There are popular monitors out there (like the Gigabyte M27Q) with KVM features and a USB-C port that skimps on the PD (Power Delivery). The M27Q only delivers 18W. Some computers won't negotiate below a certain wattage, but the Framework is flexible about it. When using low-wattage sources it's possible the battery will drain faster than it charges during use. I would recommend 45 watts or more for a FW13.

[–] [email protected] 1 points 10 months ago

just to chime in: I have mixed experiences with charging while connected to the display.

I'm using this monitor via Fedora 39, sometimes charging kicks in while connected to the monitor, sometimes it does not. I couldn't yet find the root cause, switching cables didn't do the trick (yet).

Will post something on the community forums eventually to have someone help me debug this