[Bug 2104310] Re: Plucky arm64 desktop: boot console showing on serial port only

[Dan Bungert]

https://github.com/canonical/subiquity/pull/2188

** Also affects: subiquity (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: subiquity (Ubuntu Plucky)
     Assignee: (unassigned) => Dan Bungert (dbungert)

** Changed in: subiquity (Ubuntu Plucky)
       Status: New => In Progress

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https://bugs.launchpad.net/bugs/2104310

Title:
  Plucky arm64 desktop: boot console showing on serial port only

Status in Ubuntu:
  New
Status in subiquity package in Ubuntu:
  In Progress
Status in The Plucky Puffin:
  New
Status in subiquity source package in Plucky:
  In Progress

Bug description:
  The boot console defaults to ttyAMA0 on arm64 because that is hardcoded in the kernel config.
  This breaks the boot console and consequently FDE unlocking in desktop setups.
  Manually adding console=tty0 to the kernel command line fixes the issue.

  The same issue previously affected the installer iso, see https://bugs.launchpad.net/ubuntu/+source/livecd-rootfs/+bug/2083919
  The fix in https://git.launchpad.net/~ubuntu-cdimage/debian-cd/+git/ubuntu/commit/?id=77a5ae1239f21df585f91e4af74f73c3d5625c26 only affects the installer iso itself, not the resulting installation.

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