[Bug 2031541] Re: output from dmesg (log) interferes with login

[Brett Holman]

The serial output printed to screen shouldn't interfere with input
entered from the keyboard. Even if output is scrolling, as long as the
login prompt was printed to the screen, keyboard input should be
received correctly, even if the username appears interleaved with
dmesg/systemd output.

I'm setting this bug to invalid, since current behavior is correct and
expected.

Please update this issue if you believe there to still be a bug.

** Changed in: cloud-init (Ubuntu)
       Status: New => Invalid

** Changed in: systemd (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/2031541

Title:
  output from dmesg (log) interferes with login

Status in cloud-init package in Ubuntu:
  Invalid
Status in systemd package in Ubuntu:
  Invalid

Bug description:
  On Ubuntu 22.04 Server but also affects earlier releases the login
  prompt gets masked and/or interfered with by outputs from dmesg or log
  outputs on screen. The package being used is version 249.11-0ubuntu3.9
  (systemd) and 23.2.1-0ubuntu0~22.04.1(cloud-init).

  These can come from official software (cloud-init) but also from
  partner's software (e.g. hp-ams and/or amsd). It really interferes
  with logging in through KVM either through remote means or local, but
  not over SSH. Including HPE's iLO and Dell's iDRAC.

  It's especially problematic when trying to type the password after a
  reboot or cold boot.

  What I was expecting was for those outputs during login prompt to be
  logged to log file only, to be accessible afterwards via dmesg or
  equivalent.

  What happened instead was issues with repeated incorrect password or
  username due to the masking of what displayed on screen.

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