From time to time you get some connection issues
2022-01-16 00:40:53,024 - octoprint.util.comm - WARNING - Received an error from the printer's firmware: Serial status mismatch
| Last lines in terminal:
| Changing monitoring state from "Offline" to "Detecting serial connection"
| Performing autodetection with 7 port/baudrate candidates: /dev/ttyUSB0@115200, /dev/ttyUSB0@250000, /dev/ttyUSB0@230400, /dev/ttyUSB0@57600, /dev/ttyUSB0@38400, /dev/ttyUSB0@19200, /dev/ttyUSB0@9600
| Trying port /dev/ttyUSB0, baudrate 115200
| Connecting to port /dev/ttyUSB0, baudrate 115200
| Handshake attempt #1 with timeout 2.0s
| Connected to: Serial<id=0xa7a571d0, open=True>(port='/dev/ttyUSB0', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=2.0, xonxoff=False, rtscts=False, dsrdtr=False), starting monitor
| Send: N0 M110 N0*125
| Recv: µaס
| Recv: E.½r:Serial status mismatch
| Recv: Error:Serial status mismatch
2022-01-16 20:55:20,626 - octoprint.util.comm - WARNING - Received an error from the printer's firmware: Serial status mismatch
| Last lines in terminal:
| Changing monitoring state from "Offline" to "Detecting serial connection"
| Performing autodetection with 7 port/baudrate candidates: /dev/ttyUSB0@115200, /dev/ttyUSB0@250000, /dev/ttyUSB0@230400, /dev/ttyUSB0@57600, /dev/ttyUSB0@38400, /dev/ttyUSB0@19200, /dev/ttyUSB0@9600
| Trying port /dev/ttyUSB0, baudrate 115200
| Connecting to port /dev/ttyUSB0, baudrate 115200
| Handshake attempt #1 with timeout 2.0s
| Connected to: Serial<id=0xa713cfb0, open=True>(port='/dev/ttyUSB0', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=2.0, xonxoff=False, rtscts=False, dsrdtr=False), starting monitor
| Send: N0 M110 N0*125
| Recv: µaס
| Recv: E.½r§ª¥
±status mismatch
| Handshake attempt #2 with timeout 2.0s
| Recv: Error:Serial status mismatch
| Send: N0 M110 N0*125
2022-01-16 21:27:51,708 - octoprint.util.comm - WARNING - Received an error from the printer's firmware: Serial status mismatch
| Last lines in terminal:
| Changing monitoring state from "Offline" to "Detecting serial connection"
| Performing autodetection with 7 port/baudrate candidates: /dev/ttyUSB0@115200, /dev/ttyUSB0@250000, /dev/ttyUSB0@230400, /dev/ttyUSB0@57600, /dev/ttyUSB0@38400, /dev/ttyUSB0@19200, /dev/ttyUSB0@9600
| Trying port /dev/ttyUSB0, baudrate 115200
| Connecting to port /dev/ttyUSB0, baudrate 115200
| Handshake attempt #1 with timeout 2.0s
| Connected to: Serial<id=0xa66ad030, open=True>(port='/dev/ttyUSB0', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=2.0, xonxoff=False, rtscts=False, dsrdtr=False), starting monitor
| Send: N0 M110 N0*125
| Recv: µaס
| Recv: E.½r:Serial status mismatch
| Recv: Error:Serial status mismatch
2022-01-16 21:36:33,327 - octoprint.util.comm - WARNING - Received an error from the printer's firmware: Serial status mismatch
| Last lines in terminal:
| Changing monitoring state from "Offline" to "Detecting serial connection"
| Performing autodetection with 7 port/baudrate candidates: /dev/ttyUSB0@115200, /dev/ttyUSB0@250000, /dev/ttyUSB0@230400, /dev/ttyUSB0@57600, /dev/ttyUSB0@38400, /dev/ttyUSB0@19200, /dev/ttyUSB0@9600
| Trying port /dev/ttyUSB0, baudrate 115200
| Connecting to port /dev/ttyUSB0, baudrate 115200
| Handshake attempt #1 with timeout 2.0s
| Connected to: Serial<id=0xaafc9910, open=True>(port='/dev/ttyUSB0', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=2.0, xonxoff=False, rtscts=False, dsrdtr=False), starting monitor
| Recv: aס
| Send: N0 M110 N0*125
| Recv: E.½r§UÉ¥
±status mismatch
| Recv: Error:Serial status mismatch
You may check the quality of your USB connection: As short as possible, double shielded, ferrite beads.
It's to assume that there is some EMI issue, maybe from a fridge, an AC or some other high power device. Changing the power outlet can sometime help.