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[BUG] LCD freezes/very sluggish after upgrade if SD card is left in the mainboard (continues #24301) #24306

@ucirello

Description

@ucirello

Did you test the latest bugfix-2.1.x code?

Yes, and the problem still exists.

Bug Description

With 3e9fb34 still, the LCD freezes, or at least gets very sluggish.

It worked fine with 2.0.9.3.

Bug Timeline

Since 15b6159 it is broken. 3e9fb34 did not fix.

Expected behavior

I expected the LCD to render quickly and be able to navigate through all menus. Turning the knob clockwise or counter-clockwise would immediately change feed rate.

Actual behavior

Depending on the boot sequence it will either freeze completely, or be very sluggish.

The info screen renders in more than 15s per half.

The wheel button seems to not be able to open the main menu.

Turning the knob clockwise or counter-clockwise would immediately change feed rate affects the feed rate, but it takes a long time for the number to update.

Steps to Reproduce

  1. Compile bugfix-2.1 (3e9fb34) with the given configuration files.
  2. Use a LPC1769 board (tested with MKS sgenl v2) with a RepRap Full Graphical Display and flash the firmware.
  3. LCD freezes.

Version of Marlin Firmware

bugfix-2.1 (3e9fb34)

Printer model

Modded Ender 3

Electronics

MKS SGENL v2, Discount Full Graphic Smart Controller

Add-ons

EZNEO, EZABL, UART based serial connection

Bed Leveling

ABL Bilinear mesh

Your Slicer

Cura

Host Software

No response

Other things to include

  • A ZIP file containing your Configuration.h and Configuration_adv.h.
  • Log output from the host. (M111 S247 for maximum logging.)
  • Images or videos demonstrating the problem, if it helps to make it clear.
  • A G-Code file that exposes the problem, if not affecting all G-code.

Additional information & file uploads

image (photo taken this morning)

configs.zip

image

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