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In the test, it is necessary to send interrupt_char to the device, when detecting interrupt_prompt. The lava dispatcher detected the interrupt_prompt and also sent the interrupt_char, but the device did not display the bootloader_prompt.

In order to verify that there is no problem with my device, I did two experiments:

1. After telnet and input interrupt_char, the device can display bootloader_prompt;
2. I wrote a script that simulates lava dispatcher, and the device can also display bootloader_prompt

• lava-dispatcher, installed at version: 2020.01
• ser2net version: 2.10.1-1+b1
• pexpect version: 4.6.0
• device type content:

u-boot:

parameters:

bootloader_prompt: 'qogirn6l>'

interrupt_prompt: 'ddr init start!!!'

boot_message: Starting kernel

# character needed to interrupt u-boot, single whitespace by default

interrupt_char: q

send_char: True