It used to work and now it doesn't and I'm not aware when exactly the change happened. Many things have changed, including flashing new firmware versions to the printer and reflashing/setting up octopi and octoprint new.
What is the problem?
When I pause a print and the resume evrything goes as expected, only: no extrusion. The extruder works and is busy retracting/deretracting, but when it should be busy to supply filament for the print, the little wheel stays motionless.
There doesn't seem to be a physical problem, when I abort the print and immediately start a new everything is fine and peachy.
What did you already try to solve it?
Searching didn't find me much, mostly variants of after puase / before resume #GCODE scripts with copies or variants of the scripts I copied from the wiki myself.
I still compared those scripts and added an if clause on the theory that somehow the feedrate might get set to 0 on resume.
But M117 pause_position.f {{ pause_position.f }} returns 900.0 on pausing and that doesn't change when I pause/resume more than once.
Have you tried running in safe mode?
Yes, no change.
Did running in safe mode solve the problem?
No.
What else?
What I did do is running the test with serial logging and trying to figure out what is said & done. The relevant snippet framed by octoprints status messages
Send: N228 G1 X118.993 Y122.740 E0.02798*103
Recv: ok
Send: N229 G1 X118.667 Y123.065 E0.02208*111
Recv: ok
Send: N230 M117 6% L=2/96*85
Recv: ok
Send: N231 G1 X118.667 Y123.648 E0.02798*99
Recv: ok
Send: N232 G1 X118.993 Y123.323 E0.02208*96
Changing monitoring state from "Printing" to "Pausing"
Recv: ok
Send: N233 M400*37 ; finish moves
Recv: ok
Send: N234 M114*34 ; get current position
Recv: X:118.99 Y:123.32 Z:0.48 E:4.81 Count X:9519 Y:9866 Z:165
Recv: ok
Send: N235 G91*21 ; relative positioning
Recv: ok
Send: N236 M83*31 ; e relative
Recv: ok
Send: N237 G1 Z+5 E-5 F4500*80 ; linear move z up, extruder retr F
Recv: ok
Send: N238 M82*16 ;e absolute
Recv: ok
Send: N239 G90*24 ; Absolute Positioning
Recv: ok
Send: N240 G1 X0 Y180*38 ; lin move to pausing position
Recv: ok
Send: N241 M117 pause_position.f 900.0*88 ; my debug msg
Recv: ok
Changing monitoring state from "Pausing" to "Paused"
Recv: T:205.62 /205.00 B:60.00 /60.00 @:61 B@:127
Recv: T:204.51 /205.00 B:60.14 /60.00 @:75 B@:127
Recv: T:203.75 /205.00 B:60.73 /60.00 @:82 B@:0
Recv: T:203.09 /205.00 B:60.73 /60.00 @:90 B@:0
Recv: T:202.60 /205.00 B:60.52 /60.00 @:96 B@:0
Recv: T:202.50 /205.00 B:60.30 /60.00 @:96 B@:0
Recv: T:202.74 /205.00 B:60.15 /60.00 @:91 B@:0
Recv: T:202.78 /205.00 B:59.84 /60.00 @:93 B@:0
Recv: T:203.44 /205.00 B:59.95 /60.00 @:83 B@:127
Recv: T:204.06 /205.00 B:60.43 /60.00 @:75 B@:127
Recv: T:204.55 /205.00 B:60.87 /60.00 @:71 B@:0
Recv: T:204.93 /205.00 B:60.89 /60.00 @:68 B@:0
Recv: T:205.08 /205.00 B:60.52 /60.00 @:69 B@:0
Recv: T:205.27 /205.00 B:60.51 /60.00 @:67 B@:0
Changing monitoring state from "Paused" to "Resuming"
Send: N242 M83*28 ; e relative
Recv: ok
Send: N243 G1 E-5 F4500*55 ; lin move e -
Recv: ok
Send: N244 G1 E5 F4500*29 ; lin move e +
Recv: ok
Send: N245 G1 E5 F4500*28 ; lin move e +
Recv: ok
Send: N246 M82*25 ; E Absolute
Recv: ok
Send: N247 G90*17 ; Absolute Positioning
Recv: ok
Send: N248 G92 E4.81*106 ; set New extruder position
Recv: X:0.00 Y:180.00 Z:5.48 E:4.81 Count X:0 Y:14400 Z:2192
Recv: ok
Send: N249 G1 X118.99 Y123.32 Z0.48 F4500*32 ; lin move to original position X:118.99 Y:123.32 Z:0.48 E:4.81 Coun
Recv: ok
Send: N250 G1 F900.0*110 ; lin move feedrate
Recv: ok
Send: N251 M117 end of resume 900.0*122 ; debug msg
Recv: ok
Changing monitoring state from "Resuming" to "Printing"
Send: N252 G1 X118.993 Y123.906 E0.02798*103
Recv: ok
Send: N253 G1 X118.667 Y124.231 E0.02208*102
Recv: T:205.23 /205.00 B:60.25 /60.00 @:69 B@:0
Recv: ok
Send: N254 G1 X118.667 Y124.814 E0.02798*96
Recv: ok
Send: N255 G1 X118.993 Y124.489 E0.02208*97
Recv: ok
Send: N256 G1 X118.993 Y125.072 E0.02798*111
Recv: ok
I lack knowledge and experience with GCODE but it looks mostly harmless. I have no clear understanding of what the F4500 actually does or what the *Number does or mean but I cannot find the problem in this snippet.
Systeminfo Bundle
WRITE HERE
Additional information about your setup
OctoPrint version 1.6.1 , OctoPi version 0.18.0, printer ender 3, firmware Marlin 2.0.7.2, browser firefox , operating system arch linux, OSX
octoprint-systeminfo-20210529204146.zip (104.3 KB)
Thanks in advance for any pointers where to look for the cause,