Other RP2040 boards • Re: RP2350 No CDC Serial

I know this is an old thread and pertains more to Windows, but I have just now run into this on Linux. After flashing firmware, the Pico 2 no longer shows up in my device list:

```
tim@lindawg /nfs/home/tim/My Designs/turbowave/firmware/turbowave8 $ lsusb | grep Rasp
Bus 001 Device 059: ID 2e8a:000f Raspberry Pi RP2350 Boot
```
<Flash using the "Run" in Code

then no USB:

```
tim@lindawg /nfs/home/tim/My Designs/turbowave/firmware/turbowave8 $ lsusb | grep Rasp
tim@lindawg /nfs/home/tim/My Designs/turbowave/firmware/turbowave8 $
```

In order to get it back, I have to hold the boot button down and replug the USB cable.

I know the Pico 2 works because I can throw the blink program on and see an LED blink. I tried both ARM and RISCV modes but that didn't seem to make any difference.

Any ideas on what I should try next?

Statistics: Posted by m00dawg — Sat Nov 29, 2025 4:01 am

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