[BUG] (No Printer Attached no matter the serial # selected)

[Sonicboom247]

Did you test the latest bugfix-2.0.x code?

Yes, and the problem still exists.

Bug Description

with 3/31 Bugfix i can compile fine for an SKR2 RevB with an MKS TFT28 with the below serial settings
#define SERIAL_PORT 1
#define BAUDRATE 250000
#define SERIAL_PORT_2 2
#define SERIAL_PORT_3 -1

with Bugfix i downloaded around 12:30 p,m. EST with the same settings i get no printer attached. have tested a multitude of ports which i have on a spreadsheet and no matter what i get no printer attached, I go back to the firmware from 3/31 and I am good.

Bug Timeline

started today with new Bugfix 2.0

Expected behavior

serial port 1 to detect printer

Actual behavior

No printer attached no matter what port is defined

Steps to Reproduce

No response

Version of Marlin Firmware

02010000 from this afternoon

Printer model

Artillery Sidewinder X1

Electronics

Stock display on BTT SKR2 with 2209 steppers

Add-ons

BLTouch

Bed Leveling

UBL Bilinear mesh

Your Slicer

Cura

Host Software

SD Card (headless)

Additional information & file uploads

Configurations.zip

[ellensp]

You probably plugged the tft cable in to the SWD port to the left of the TFT port

This Issue Queue is for Marlin bug reports and development-related issues, and we prefer not to handle user-support questions here. (As noted on this page.) For best results getting help with configuration and troubleshooting, please use the following resources:

• MarlinFW.org Marlin Documentation
• RepRap.org Marlin Forum
• Facebook Group "Marlin Firmware"
• Facebook Group "Marlin Firmware for 3D Printers"
• Marlin Configuration on YouTube
• 3D Printing Discord server. Join link: https://discord.gg/qNnSzsug
• Marlin specific Discord server. Join link: https://discord.gg/n5NJ59y

After seeking help from the community, if the consensus points to a bug in Marlin, then you should post a bug report.

[Sonicboom247]

sorry your assumption is wrong, as stated i can switch to an earlier version with no issue. I didn't state anything about moving cables, this is not a new hardware install and has been working fine. but whatever, i can figure it out.

[Sonicboom247]

Thank you for reopening, seems like the version i downloaded minutes before this change caused the issue, i just grabbed a fresh version and it is working now 🔧 Remove LCD_SERIAL_PORT defaults, warn on auto-assign (https://github.com/MarlinFirmware/Marlin/pull/24170[)](https://github.com/MarlinFirmware/Marlin/commit/2bb9e0d58e6513b47f90e729876de98ac7ccdade)

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.