Getting errors on SB2209 - USB disconnects and print fails.

[th0mpy]

Running the latest version of Klipper on a SB2209 USB. This thing is nothing but problems if I'm honest.

Everything is grounded, even have a grounding wire back to the chassis, chassis is bonded to ground on the PSU. Tried a few different cables, and the issue still happens.

After a seemingly random amount of time the SB2209 board disconnects and the print fails. Looking at DMESG I see an error:

clear tt 1 (9031) error -71

This happens a few hundred times until:

[13638.809669] usb 3-2.2: USB disconnect, device number 4
[13638.841976] usb 3-2.4: USB disconnect, device number 5

Power cycle and restart the print MIGHT work but in a lot of cases it just happens again at a random point in the print.

Logs attached, any ideas?

moonraker-11.log

klippy-15.log.zip

[ksb4ever]

Fighting with the same issue.
Previously I had cold solder joint on the temperature sensor switch, after resoldering all was fine.
About 10 - 20 print hours later this started. What I noticed, that USB hub disconnects (not just RP2040, which may mean some inputs out of bounds). I believe it may be flawed soldering process, but no strong proof to that yet.