esp-idf: idf monitor problem with esp32 (IDFGH-4882)

Environment

• Development Kit: [ESP32-Wrover-Kit]
• Kit version (for WroverKit/PicoKit/DevKitC): [v4]
• Module or chip used: [ESP32-WROVER-E]
• IDF version : v4.2
• Build System: [idf.py]
• Compiler version: xtensa-esp32-elf-gcc (crosstool-NG esp-2020r3) 8.4.0
• Operating System: [Windows]
• (Windows only) environment type: [ESP Command Prompt].
• Using an IDE?: [No]
• Power Supply: [USB]

Problem Description

idf monitor doesn’t work well. I was running hello-world example. After I ran idf.py set-target esp32 and idf.py -p COM9 flash monitor, building and flashing succeeded but there seemed to be a problem with the monitor. It was supposed to print like the Expected Behavior but only print like the Actual Behavior.

I ran idf.py fullclean, but it doesn’t help.

Expected Behavior

This picture was taken one month ago. Today I manually deleted and reinstalled the ESP-IDF and ESP-IDF-TOOLS to the v4.2, and the problem arose. Everything is the same except the ESP-IDF. As you can see in the log, the ESP-IDF I used was v4.1-dirty.

Actual Behavior

Steps to reproduce

1. connect the board
2. move to the hello-world directory
3. run idf.py set-target esp32
4. run idf.py -p COM9 flash monitor