PicoRX hangs when trying to connect to a Linux MX USB port

[sweiland-openrails]

I have a strange problem. I've yet only build the digital part of PicoRX: the rpi pico, rotary encoder, display and buttons.

I compiled and uploaded pico2rx.uf2. When connected to a Linux MX computer USB port it hangs and the display is showing the PicoRX splash screen halfways. When I just connect it to a phone charger it works ok. I then see the frequency and it changes when turning the rotary encoder. Command lsusb gives a line, so it is connected:

Bus 003 Device 024: ID cafe:4011 dawsonjon PicoRX

When using the pre-compiled uf2 files, it works also ok, both of them. When I compare the downloaded pico2rx.uf2 and the compiled pico2rx.uf2, they both are of the same size. The contents is different.

I see this problem only when connecting to Linux MX. Connecting to Windows 10 is ok.

Anyone an idea what could be the problem?

[dawsonjon]

I have a very similar issue if I compile with the latest version of SDK. I'm working through it, but don't have a solution yet. For now, the best workaround is probably to roll back to an earlier version of SDK.

[sweiland-openrails]

Ok, thanks for your quick answer. I'll try a previous version of the SDK.