[Bug 2008244] Re: Pressing a key does not interrupt the boot sequence after rainbow" splash screen

[Ubuntu QA Website]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
https://iso.qa.ubuntu.com/qatracker/reports/bugs/2008244

** Tags added: iso-testing

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Title:
  Pressing a key does not interrupt the boot sequence after rainbow"
  splash screen

Status in syslinux package in Ubuntu:
  New

Bug description:
  
  I tested the following image on the Raspberry Pi 3B+:
  http://cdimage.ubuntu.com/ubuntu-server/jammy/daily-preinstalled/20230217.1/jammy-preinstalled-server-arm64+raspi.img.xz

  Testcase (https://iso.qa.ubuntu.com/qatracker/milestones/442/builds/271829/testcases/1721/results):
  1. Immediately after the "rainbow" splash screen, U-Boot starts. Press a key
  to interrupt the sequence, then type "boot" to continue it.
      Check that the U-Boot prompt (including a two-second wait) appears on
      the primary monitor connected to the Pi, that the keyboard will interrupt
      the sequence, and that boot successfully concludes after resumption.
  2. During the boot sequence, U-Boot starts interacting via serial (GPIO14
  and GPIO15, pins 8 and 10 respectively, on the 40-pin GPIO header). Press
  a key to interrupt the sequence, then type "boot" to continue it.
      Check that the U-Boot prompt (including a two-second wait) appears on
      the attached serial console, that the keyboard will interrupt
      the sequence, and that boot successfully concludes after resumption.

  The boot sequence waited for 2 seconds, but was not interrupted by any
  keypress on the keyboard. I tested this multiple times.

  I attached the serial output of the boot sequence.

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