@vorlon When grub-common, grub-efi-amd64, grub-efi-amd64-bin and grub2-common
are installed with version 2.02-2ubuntu8.12 the following configuration options
(in /etc/default/grub) are not honoured:
GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=0
GRUB_RECORDFAIL_TIME=0
The resulting "grub.cfg" has following lines at the end of 00_header-block:
if [ "${recordfail}" = 1 ] ; then
set timeout=30
else
if [ x$feature_timeout_style = xy ] ; then
set timeout_style=hidden
set timeout=0
# Fallback hidden-timeout code in case the timeout_style feature is
# unavailable.
elif sleep --interruptible 0 ; then
set timeout=0
fi
fi
if [ $grub_platform = efi ]; then
set timeout=30
if [ x$feature_timeout_style = xy ] ; then
set timeout_style=menu
fi
fi
These lines override any timeouts or menu styles set in the
configuration (via /etc/default/grub). The result is a 30 second timeout
with a menu when booting grub. Having no recordfail support would
default to 30 second timeout but running on EFI forces the timeout style
to "menu" as well.
When downgrading to version 2.02-2ubuntu8.8 equivalents of the packages
mentioned above, "grub.cfg" has the following output at the end of the
00_header block:
if [ "${recordfail}" = 1 ] ; then
set timeout=30
else
if [ x$feature_timeout_style = xy ] ; then
set timeout_style=hidden
set timeout=0
# Fallback hidden-timeout code in case the timeout_style feature is
# unavailable.
elif sleep --interruptible 0 ; then
set timeout=0
fi
fi
Absent is the "platform == efi" block that forces timeout to 30 seconds
and timeout style to menu. This results in a quiet startup for grub
without any boot delay.
The main issue is 2.02-2ubuntu8.12 (I have not been able to install
2.02-2ubuntu8.10 from the repos directly) overrides GRUB_TIMEOUT_STYLE and
GRUB_TIMEOUT without any warning. This means that GRUB_HIDDEN_TIMEOUT and
GRUB_HIDDEN_TIMEOUT_QUIET are also never used. The previous behaviour is as
described above, where the quiet boot happens without boot delay.
I indeed have /boot on LVM on an EFI system but what I want from grub is
quiet boot with no timeout, which the 2.02-2ubuntu8.8 version provides.
I feel this is a regression due to how earlier behaviour is no longer
happening as expected nor are there any warnings about this when running
update-grub. Running on EFI and LVM is not an excuse to silently ignore
configured defaults. There should at least be a warning that the
configured defaults are going to be ignored.
I have not tried to see if you only need to downgrabe grub-common or
grub2-common for the old behaviour to return.
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https://bugs.launchpad.net/bugs/1800722
Title:
EFI booting + /boot on LVM == inaccessible boot menu
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