Monoprice select mini V2 (MPSM V2) Connection Fix OctoPi

[Maurice_Wunderling]

What is the problem?

Hi,
I try to connect my Printer, that workt after installing the " OctoPrint Malyan Connection Fix Plugin" but after a while the printer disconnect´s him self. While a print is runnig than the print stops (load on OctoPi) and i can´t connect it back. I need to restart the Printer.

The Pi ist Installed on Windows!!!

What did you already try to solve it?

Install the " OctoPrint Malyan Connection Fix" Plugin
Switching the USB Cable
Cecked the USB Port on the Printer and the PI

Have you tried running in safe mode?

Yes

Did running in safe mode solve the problem?

No

Systeminfo Bundle

Changing monitoring state from "Offline" to "Detecting serial connection"
Performing autodetection with 0 port/baudrate candidates:
Changing monitoring state from "Detecting serial connection" to "Error"
Changing monitoring state from "Error" to "Offline after error"
Changing monitoring state from "Offline" to "Detecting serial connection"
Performing autodetection with 7 port/baudrate candidates: /dev/ttyACM0@115200, /dev/ttyACM0@250000, /dev/ttyACM0@230400, /dev/ttyACM0@57600, /dev/ttyACM0@38400, /dev/ttyACM0@19200, /dev/ttyACM0@9600
Trying port /dev/ttyACM0, baudrate 115200
Connecting to: /dev/ttyACM0
Using Malyan/Monoprice Connection Fix Plugin to create serial connection
Handshake attempt #1 with timeout 2.0s
Connected to: Serial<id=0x6a5514f0, open=True>(port='/dev/ttyACM0', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=2.0, xonxoff=False, rtscts=False, dsrdtr=False), starting monitor
Send: N0 M110 N0125
Recv: ok N0 P15 B15
Changing monitoring state from "Detecting serial connection" to "Operational"
Send: N0 M110 N0125
Recv: ok N0 P15 B15
Send: N1 M11539
Unexpected error while reading serial port, please consult octoprint.log for details: SerialException: 'device reports readiness to read but returned no data (device disconnected or multiple access on port?)' @ comm.py:_readline:3997
Please see OctoPrint randomly loses connection to the printer with a "SerialException" - FAQ - OctoPrint Community Forum for possible reasons of this.
Changing monitoring state from "Operational" to "Offline after error"
Connection closed, closing down monitor
Changing monitoring state from "Offline" to "Detecting serial connection"
Performing autodetection with 0 port/baudrate candidates:
Changing monitoring state from "Detecting serial connection" to "Error"
Changing monitoring state from "Error" to "Offline after error"
Changing monitoring state from "Offline" to "Detecting serial connection"
Performing autodetection with 0 port/baudrate candidates:
Changing monitoring state from "Detecting serial connection" to "Error"
Changing monitoring state from "Error" to "Offline after error"
Changing monitoring state from "Offline" to "Detecting serial connection"
Performing autodetection with 7 port/baudrate candidates: /dev/ttyACM0@115200, /dev/ttyACM0@250000, /dev/ttyACM0@230400, /dev/ttyACM0@57600, /dev/ttyACM0@38400, /dev/ttyACM0@19200, /dev/ttyACM0@9600
Trying port /dev/ttyACM0, baudrate 115200
Connecting to: /dev/ttyACM0
Using Malyan/Monoprice Connection Fix Plugin to create serial connection
Handshake attempt #1 with timeout 2.0s
Connected to: Serial<id=0x6fc8adf0, open=True>(port='/dev/ttyACM0', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=2.0, xonxoff=False, rtscts=False, dsrdtr=False), starting monitor
Send: N0 M110 N0125
Recv: ok N0 P15 B15
Changing monitoring state from "Detecting serial connection" to "Operational"
Send: N0 M110 N0125
Recv: ok N0 P15 B15
Send: N1 M11539
Recv: NAME. Malyan VER: 4.0 MODEL: M200 HW: HH02
Recv: CLK:EXT BUILD: Aug 10 2017 09:53:33
Recv: ok N1 P15 B15
Send: N2 M21*18
Unexpected error while reading serial port, please consult octoprint.log for details: SerialException: 'device reports readiness to read but returned no data (device disconnected or multiple access on port?)' @ comm.py:_readline:3997
Please see OctoPrint randomly loses connection to the printer with a "SerialException" - FAQ - OctoPrint Community Forum for possible reasons of this.
Changing monitoring state from "Operational" to "Offline after error"
Connection closed, closing down monitor

Additional information about your setup

OctoPrint version 1.8.4, OctoPi version 0.18.0, PI is an 3B, printer Monoprice Select mini V2,browser Chrome,

Thanks for yor Help!!!

[Ewald_Ikemann]

Hello @Maurice_Wunderling !

Can you please share the systeminfo bundle?
It's more informative that the last lines in the terminal.

[Maurice_Wunderling]

Hello Ewald, thanks for your Help!
octoprint-systeminfo-20221010134025.zip (44.0 KB)

[Ewald_Ikemann]

You may have a on onto the FAQ:

OctoPrint randomly loses connection to the printer with a "SerialException"

A "SerialException" like e.g. device reports readiness to read but returned no data indicates that something a layer beneath OctoPrint broke and the connection to your printer was lost due to that. There's nothing OctoPrint can do about this - as already said the issue happens beneath OctoPrint. It's basically like someone pulled the rug from beneath its feet. The most common reasons for this are: You forgot to actually turn on the printer. You are running OctoPrint on a Raspberry Pi but have…

You also may install a proper firmware:

Configurations/config/examples/Malyan/M200 at import-2.1.x ·...

Hint: You may delete Octoprint-filamentreload. It does not work with Python 3.

[Maurice_Wunderling]

Hi Ewald,

thanks for your help.

I think the USB Port on the Printer was loose. I soldered it and the first print worked without problems. Thanks!!!

Why you prefer the Firmware?

Do you know an other Filament Sensor for Python 3?

Nochmals Danke und Grüße aus dem Norden!

[Ewald_Ikemann]

@Maurice_Wunderling

Why you prefer the Firmware?

Just in case it would have been a firmware issue.

I have my regular filament sensors running via the printer. So I can't tell.

Alles Gute aus Münster.

[Maurice_Wunderling]

Thank you so much, yesterday i had an 6h Printing job running and no connection fails.

ah okay, I have it in mind.

okay, my Printer don´t have this Funktion and trust me that is sh*t. I have a look in the Forum and Plugins.

Lieben Gruß