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on linux, how do i check if a usb c port on my mobo can transfer data (lemmy.ml)
submitted 2 years ago by to c/asklemmy@lemmy.ml
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hi everyone, my audio interface is on (and thus drawing power) but it's not being detected by my computer as an input output device, thoughts?

p.s. it worked just fine with a usb a port and the usb c cable im using does transfer data

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[โ€“] 7 points 2 years ago

try connecting your phone to the port and see if you can transfer files

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    [โ€“] [S] 2 points 2 years ago (2 children)

    update, just used a usb c to a adapter and tried a different port and it worked??!?! the port isnt damaged cause it draws power and it definitely is supposed to transfer data, any ideas?

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  • [โ€“] 1 point 2 years ago (1 child)

    Does anything show up in dmesg output when you plug it in the original way?

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  • [โ€“] [S] 1 point 2 years ago (1 child)

    i'll check, what should show up

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  • [โ€“] 1 point 2 years ago* (last edited 2 years ago)

    Basically, anything. The most basic step is seeing if your computer knows the device has been plugged in. If you see anything new in dmesg it means there's a data connection going on and you can read the output and diagnose from there. If you don't see anything after plugging, it's probably a hardware issue with the port.

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    • [โ€“] 2 points 2 years ago (1 child)

    I've experienced issues with AIs in the past using USB 3+. What interface is it and what motherboard?

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    • [โ€“] 1 point 2 years ago (1 child)

    Are we 100% certain the USB-C port is connected?

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    • [โ€“] -1 points 2 years ago

    That's the thing ! It's not linux specific.

    How it works :

    USB 1 and 2 use a set of 4 pins. It can only use those 4pins to transmit data.

    USB 3 uses 9 pins : the 4 original pins and 5 more pins. It is backwards compatible with USB 1 and 2 because it can only use those four pins instead of the full array.

    USB-C, however, uses 24 pins (2*12 pins to be exact). However, what makes no sense, is when using a USB-A to USB-C cable it does work only in one direction : from USB-A to USB-C.

    But rest assured, you are not alone onnthis issue. I've had it, even when I did not want to tranfer data but just power : it does not work, whether on Windows or Linux...

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