Marlin 2.0.6 - no more connection

Hi all,
just build a new firmware with Marlin 2.0.6 and now Octoprint is no longer connecting to the Ender 3.
In the terminal i can see it's trying to negotiate the baudrate but it hangs there forever

if i select a buadrate instead of Auto i get this message and no connection:

Connected to: Serial<id=0x69502610, open=True>(port='/dev/ttyACM0', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=10.0, xonxoff=False, rtscts=False, dsrdtr=False), starting monitor
Changing monitoring state from "Opening serial port" to "Connecting"
Send: N0 M110 N0*125

any help?

Hello @bonoboxita

any logs?

octoprint.log (110.6 KB)