Linear advance, extruder very noisy

[DzzD]

Hello, I would like to know if is that normal that the extruder make a lot of noise when Linear Advance is enabled?

PS: I am using TMC2208 on extrudeur

[William]

Hi, You can provide a specific video.
So that we can solve the problem better.

[DzzD]

Hi, You can provide a specific video

Ok I will do that, but for now I have another problem more important. I notice that retractation seems to be a lot slower than my slicer setting 30mm/s, when I look to the extruder while printing it look more like 15 or 10 mm/s, any idea ? (Marlin 2.0)

[DzzD]

https://github.com/MarlinFirmware/Marlin/pull/15905

thanks ! It is probably related even If I use software retract and not G10/G11.

[DzzD]

It is ok !

At first I tried your latest Geeetech Marlin 2.0 release but unfortunatly it was not working better, then I realised that your latest build did not contains the modifications in planner.cpp, so I've integrated the modifications from here (https://github.com/MarlinFirmware/Marli ... 1ec2e75228) and now retraction is as fast as it should.

[DzzD]

Also Linear Advance is no more noisy, don't know if it come from the latest "vert" Marlin 2.0 Geeetech release or from the patch in planner.cpp, but now it work silently

[DzzD]

Another day, another problem : now one extruder stops extruding (I mean the stepper motor stop moving) with some models, and usually on first layer but it print well others biggers model, any idea ?

[DzzD]

It stop at first layer, so very very small, but I can print a 30x30x30 cube without problem, also the extruders stepper drivers are both cold, wich is normal as they stop at start print, it extrude about 50mm and stop for some models, I will try your last build (does it include Mix extruder speed retraction patch ?)

[DzzD]

Same problem with last build :/

Side note : LCD info screen (first screen) is buggy on latest build

[DzzD]

the forum is not the ideal place for discussion the server is very slow and the posting limits prevent discussion suggest using my discord.
https://discord.gg/brq79WQ

Ok I will do that next time, I dont know Discord it will be interresting to discover.

Last post for tonight but important for user facing the same issue : I tried disabling Linear Advance and it works ! (Setting it to 0 does not work, I have disabled it in Configuration_adv.h)