[Bug 1841202] Re: during install kernel console garbled when secureboot enabled

[Steve Langasek]

> The version of shim as reported by 'apt-cache show shim' is:
> Architecture: amd64
> Version: 13-0ubuntu2

This is a VERY old version of shim, and not the current version present
in bionic.  It is also definitely NOT the version that is used by the
Ubuntu 18.04.2 release media (the version that was current in bionic at
the time of that media's release was 15+1533136590.3beb971-0ubuntu1,
that is the same version that was current in bionic at the time of
18.04.5's release, and the current version - not included in any release
media - is 15+1552672080.a4a1fbe-0ubuntu2).

The regular point release cycle for 18.04 LTS has concluded, so if this
bug is fixed in 15+1552672080.a4a1fbe-0ubuntu2 but not in
15+1533136590.3beb971-0ubuntu1, you would need to use release media for
a newer release in any case.  (Ubuntu 21.04 is the first release media
that includes 15+1552672080.a4a1fbe-0ubuntu2; Ubuntu 20.04.2, to be
released next week, will also have it.)

>  A rather vanilla qemu/kvm guest:
> [...]
>      --cdrom=/root/bug29812426/work/isos/UefiShell.iso --check path_in_use=off \
> [...]

This doesn't look very "vanilla" to me given that you are booting an
image called "UefiShell.iso", not booting the Ubuntu install media.  How
are you booting the Ubuntu media?

** Changed in: shim-signed (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1841202

Title:
  during install kernel console garbled when secureboot enabled

Status in shim-signed package in Ubuntu:
  Incomplete

Bug description:
  Installing bionic, into an OVMF guest, with secure boot enabled (via kraxel EnrollDefaultKeys).
  The GRUB screen works just fine, but as soon as the kernel boots, the "text" mode becomes garbled. One can tell that it is text, but it is wholly unreadable.

  Installing from ubuntu-18.04.2-live-server-amd64.iso.

  QEMU emulator version 3.1.0 (qemu-3.1.0-5.el7)
  Copyright (c) 2003-2018 Fabrice Bellard and the QEMU Project developers

  also happens on a qemu 2.5 version in Ubuntu 16.04 LTS

  A rather vanilla qemu/kvm guest:

  virt-install \
      --name vm2 \
      --vcpus 4 \
      --ram 8192 \
      --graphics vnc \
      --video vga \
      --network network=default,mac=52:54:00:00:00:02  \
      --cdrom=/root/bug29812426/work/isos/UefiShell.iso --check path_in_use=off \
      --disk=hda.qcow2 \
      --boot=loader=/root/bug29812426/work/vm2/OVMF_CODE-need-smm.fd,loader_ro=yes,loader_type=pflash,nvram_template=/root/bug29812426/work/vm2/OVMF_VARS-need-smm.fd  \
      --machine q35

  What I expected to happen:
  Text mode would be readable via the VNC session

  What happened instead:
  Text mode is corrupted/garbled/unreadable in the VNC session
  See attached screengrab, which was taken post kernel boot and at the installer app.

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