Troubleshooting • RPi4 and USB smart card readers

Hello all:

I am fairly new to Raspberry Pi.

I am using an RPi4 2GB with a Waveshare POE hat https://www.amazon.com/gp/product/B0974 ... UTF8&psc=1, a 64GB SD Card, and Ubuntu 24.04 server.
My project uses this for a certificate authority and stores the private keys on a USB device.
USB devices that I have tried thus far:
- Yubikey 5 nano
- Nitrokey HSM 2

I have noticed that these USB devices will become unresponsive, and I have to unplug and reinsert them back into the RPi4 (I've tried both USB2 and USB3 ports).
In my search for a solution, I've come across thoughts that USB devices (specifically high-powered devices such as SSD drives) could be drawing more power from these ports than they are capable of.
I have not encountered threads on low-power devices (such as smart card readers or thumb drives).

Am I experiencing the same problem as high-powered USB devices?
Is there anything I can try to get stability from low-powered USB devices?

Thanks

Details:

RPi4-data.zip

Statistics: Posted by originaltrini0 — Mon Aug 05, 2024 8:01 pm

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