[Bug 1814403] Re: Latest update causes 30 sec. menu delay timeout

[m4t]

I believe it had to do with the patch debian/patches/quick-boot-
lvm.patch as described here:
https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1800722

Here's what I wrote in a comment (#12) there a couple days ago:

Seeing a regression here on 18.10/amd64 with 2.02+dfsg1-5ubuntu8.1 using
EFI+btrfs boot volume. No LVM used, just GPT on NVMe.

Regardless of my settings in /etc/default/grub, the boot wait is now 30
seconds.

Relevant settings:
GRUB_HIDDEN_TIMEOUT=1
GRUB_HIDDEN_TIMEOUT_QUIET=false
GRUB_TIMEOUT=0

I've downgraded using the following commands:
apt install grub-common=2.02+dfsg1-5ubuntu8 grub-efi-amd64=2.02+dfsg1-5ubuntu8 grub-efi-amd64-bin=2.02+dfsg1-5ubuntu8 grub2-common=2.02+dfsg1-5ubuntu8
apt-mark hold grub2-common grub-efi-amd64

And it's returned the previous behavior.

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https://bugs.launchpad.net/bugs/1814403

Title:
  Latest update causes 30 sec. menu delay timeout

Status in grub2 package in Ubuntu:
  Confirmed

Bug description:
  KDEneon LTS user edition 5.12, Release 18.04

  grub-common 2.02-2ubuntu8.10 from Ubuntu updates

  Since latest update near the end of Jan. 2019 (29th?), grub menu has
  30 second delay every reboot as though recordfail is set. It did not
  do this before the update.

  After messing with grubenv and recordfails settings, I found this
  paragraph in 00_header in 18.04 that is not in 16.04:

  if lsefi; then
    set timeout=30 
    if [ x$feature_timeout_style = xy ] ; then
      set timeout_style=menu
    fi
  fi

  Note "timeout=30" which is the same as the recordfail timeout. As a
  test, I edited /boot/grub/grub.cfg and changed the 30 to 17 and sure
  enough, that's the source of the timeout.

  Here's the paragraph from 00_header:

  if lsefi; then  set timeout=${GRUB_RECORDFAIL_TIMEOUT:-30}
    if [ x\$feature_timeout_style = xy ] ; then
      set timeout_style=menu
    fi
  fi

  One odd thing is the 00_header file is from Jan 9th but this bug has
  just appeared so it must be related to grub-common not the the header
  file.

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