Is it possible to choose which version of Marlin for custom firmware?

zogthegreat · 13 June 2022 22:55

Hi everyone!
Apparently, there is a bug in Marlin 2.1.x that causes problems with the LCD:

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

opened 01:50PM - 07 Jun 22 UTC

Bug: Confirmed ! C: LCD & Controllers F: SD Card Printing

### Did you test the latest `bugfix-2.1.x` code? Yes, and the problem still exi…sts. ### Bug Description With 3e9fb34892e85bc4069acf5baddbf12d6cd47789 still, the LCD freezes, or at least gets very sluggish. It worked fine with 2.0.9.3. ### Bug Timeline Since 15b6159f6af740f17db2dc8815697759c714cc12 it is broken. 3e9fb34892e85bc4069acf5baddbf12d6cd47789 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 (3e9fb34892e85bc4069acf5baddbf12d6cd47789) 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 (3e9fb34892e85bc4069acf5baddbf12d6cd47789) ### 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 - [X] A ZIP file containing your `Configuration.h` and `Configuration_adv.h`. - [ ] Log output from the host. (`M111 S247` for maximum logging.) - [X] 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](https://user-images.githubusercontent.com/138827/172396624-262bb4cd-6f0e-4ebe-8451-cd73e9145fd7.png) (photo taken this morning) [configs.zip](https://github.com/MarlinFirmware/Marlin/files/8853725/configs.zip) ![image](https://user-images.githubusercontent.com/138827/172396939-5e136f3b-f97f-4890-b861-eb58f1a66d77.png)

Is there a way to choose a previous version of Marlin for custom firmware?

CRCinAU · 14 June 2022 00:31

The Builder updates from bugfix-2.1.x every hour - but there’s no way to select a version as such.

zogthegreat · 14 June 2022 12:25

I just downloaded a custom firmware and the problem seems to be fixed.

CRCinAU · 14 June 2022 13:42

Nice - I pulled in PR #24319 - which apparently fixes the issue - but probably not in the final way.

This might get redone and break again in the future, but at least it sort-of works now while the root cause is being investigated…