What is the problem?
The printer is keep doing some kind of reset of MMU every few minutes when it is connected to Octoprint server. Here is how it looks on the terminal, please have look to logs section
What did you already try to solve it?
I'm fresh after reinstallation of octoprint and octopi 0.17. the issue is the same at Octoprint 1.3.12, 1.4.0 and 1.4.1rc3. I haven't got this issue on my previouse install which was base on octopi 0.16 and Octoprint 1.4.1 rc2 and all before. I use R Pi 3B+ connected through
/boot/cmdline.txt I've make sure to delete
Also I've got configured the printer in octoprint as 5 extruders with shared nozzle like described at FAQ
serial.log or output on terminal tab at a minimum, browser error console if UI issue ... no logs, no support! Not log excerpts, complete logs.)
octoprint (1).log (200.3 KB) serial (1).log (33.8 KB) Octoprint_terninal.log (53.7 KB)
Recv: ok T:23.1 /0.0 B:24.0 /0.0 T0:23.1 /0.0 @:0 B@:0 P:24.7 A:31.5
Recv: ok T:23.3 /0.0 B:23.9 /0.0 T0:23.3 /0.0 @:0 B@:0 P:24.7 A:31.9
Recv: \x00echo: 3.9.0-3421
WARNThe received line contains at least one null byte character at position 0, this hints at some data corruption going on
Recv: echo: Last Updated: May 18 2020 17:11:15 | Author: (none, default config)
Recv: Compiled: May 18 2020
Recv: echo: Free Memory: 1675 PlannerBufferBytes: 1792
Recv: echo:Stored settings retrieved
Recv: CrashDetect ENABLED!
Recv: FSensor ENABLED (sensor board revision: 0.3 or older)
Recv: Sending 0xFF
Recv: echo:SD card ok
Recv: echo:busy: processing
Printer seems to support the busy protocol, will adjust timeouts and set busy interval accordingly
Send: M113 S2
Recv: ok T:22.9 /0.0 B:23.8 /0.0 T0:22.9 /0.0 @:0 B@:0 P:76.5 A:31.4
Recv: MMU => 'start'
Recv: MMU <= 'S1'
Recv: ok T:23.2 /0.0 B:24.3 /0.0 T0:23.2 /0.0 @:0 B@:0 P:25.1 A:31.4
Recv: ok T:23.1 /0.0 B:23.9 /0.0 T0:23.1 /0.0 @:0 B@:0 P:24.6 A:31.7
Recv: MMU => '106ok'
Recv: MMU <= 'S2'
Recv: MMU => '372ok'
Recv: MMU version valid
Recv: MMU - ENABLED
Recv: ok T:23.2 /0.0 B:24.0 /0.0 T0:23.2 /0.0 @:0 B@:0 P:24.6 A:31.5
Recv: ok T:23.0 /0.0 B:24.1 /0.0 T0:23.0 /0.0 @:0 B@:0 P:24.6 A:31.4
Recv: ok T:23.2 /0.0 B:24.2 /0.0 T0:23.2 /0.0 @:0 B@:0 P:24.7 A:31.5
Additional information about your setup
OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible
Prusa FW 3.9.0 / MMU2S 1.0.6