Public bug reported:
[Impact]
I have a UEFI-based server with both a graphical head and a serial console
(Cavium Sabre). If I boot the netboot (d-i) installer, the install menu appears
on both, and I'm able to interact with the installer over both the serial
console and the graphical head. However, when booting into the *installed*
system (w/ HIDDEN_TIMEOUT disabled), the GRUB menu only appears over the
graphical head. I can use either serial or graphical for input - that is, if I
monitor the graphical head I can see the changes I'm typing on the serial
console, but the serial console remains blank until I boot into Linux.
Note: MAAS installations are not impacted by this because curtin adds an
/etc/default/grub.d stub that manually sets "GRUB_TERMINAL=console".
[Test Case]
Install the system using d-i over the serial console.
Comment out the HIDDEN variables in /etc/default/grub.
sudo update-grub
Reboot - and watch for the GRUB menu over the serial console.
[Regression Risk]
TBD
** Affects: grub2 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1743884
Title:
installed GRUB menu does not appear on term used for install
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