@Balint

Please try the below command:

1. $ acpi_listen => press power button
output: button/power PBTN 00000080 00000000

It is for getting the power button string which is PBTN

2. $ sudo acpidbg -b "notify _SB.PBTN 0x80"; sudo acpidbg -b "notify _SB.PBTN 
0x80"
To simulate two consecutive power button event
It will shutdown directly on focal.

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https://bugs.launchpad.net/bugs/1878351

Title:
  System shutdown directly by pressing power button and releasing
  immediately on Dell Vostro 5301

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