Public bug reported:
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.
** Affects: shim-signed (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "2019-08-23-112200_800x625_scrot.png"
https://bugs.launchpad.net/bugs/1841202/+attachment/5284229/+files/2019-08-23-112200_800x625_scrot.png
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https://bugs.launchpad.net/bugs/1841202
Title:
during install kernel console garbled when secureboot enabled
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