Ir worked to use that PPA without using the sources.list changes to point to Noble for Mantic and Noble... but Jammy still needs the source list from Noble to be able to pull in the needed depends. The needed depends versions are not in the jammy Repo.
The command log for the updated work-around using the "Backports build PPA"
>>>
sudo su -
zpool export -a
zpool import -N -R /mnt rpool
zpool import -N -R /mnt bpool
UUID=$(zfs list | awk '/^bpool\/BOOT\/ubuntu_/ {print $1}' | sed 's/bpool\/BOOT\/ubuntu_//g')
zfs mount rpool/ROOT/ubuntu_$UUID
zfs mount bpool/BOOT/ubuntu_$UUID
zfs mount -a
mount --make-private --rbind /dev /mnt/dev
mount --make-private --rbind /proc /mnt/proc
mount --make-private --rbind /sys /mnt/sys
mount --make-private --rbind /run /mnt/run
chroot /mnt /bin/bash --login
mount -a
# Make backup of the original Jammy sources.list
cp /etc/apt/sources.list /etc/apt/sources.list.jammy
# Create a new Noble sources.list
sudo nano /etc/apt/sources.list.noble
# Add the "Backports build PPA" for Grub2 2.12
add-apt-repository ppa:ubuntu-uefi-team/backports-build
apt update
# If, for some reason, it gets an error saygn there is not release file, then do this
# Modify the sources.list line of the PPA to work with Jammy
nano /etc/apt/sources.list.d/ubuntu-uefi-team-ubuntu-build-jammy.list
Ir worked to use that PPA without using the sources.list changes to point to Noble for Mantic and Noble... but Jammy still needs the source list from Noble to be able to pull in the needed depends. The needed depends versions are not in the jammy Repo.
The command log for the updated work-around using the "Backports build PPA" /BOOT\/ ubuntu_ / {print $1}' | sed 's/bpool\ /BOOT\/ ubuntu_ //g') ubuntu_ $UUID ubuntu_ $UUID
>>>
sudo su -
zpool export -a
zpool import -N -R /mnt rpool
zpool import -N -R /mnt bpool
UUID=$(zfs list | awk '/^bpool\
zfs mount rpool/ROOT/
zfs mount bpool/BOOT/
zfs mount -a
mount --make-private --rbind /dev /mnt/dev
mount --make-private --rbind /proc /mnt/proc
mount --make-private --rbind /sys /mnt/sys
mount --make-private --rbind /run /mnt/run
chroot /mnt /bin/bash --login
mount -a
# Make backup of the original Jammy sources.list sources. list /etc/apt/ sources. list.jammy
cp /etc/apt/
# Create a new Noble sources.list sources. list.noble
sudo nano /etc/apt/
# Fill with these contents: us.archive. ubuntu. com/ubuntu/ noble main restricted universe multiverse us.archive. ubuntu. com/ubuntu/ noble-updates main restricted universe multiverse us.archive. ubuntu. com/ubuntu/ noble-backports main restricted universe multiverse security. ubuntu. com/ubuntu noble-security main restricted universe multiverse sources. list.noble /etc/sources.list
deb http://
deb http://
deb http://
deb http://
# Save and exit
cp /etc/apt/
apt update
# Add the "Backports build PPA" for Grub2 2.12 uefi-team/ backports- build
add-apt-repository ppa:ubuntu-
apt update
# If, for some reason, it gets an error saygn there is not release file, then do this sources. list.d/ ubuntu- uefi-team- ubuntu- build-jammy. list
# Modify the sources.list line of the PPA to work with Jammy
nano /etc/apt/
# Change the active line to: /ppa.launchpadc ontent. net/ubuntu- uefi-team/ build/ubuntu/ noble main
deb [trusted=yes] https:/
# Save and exit nano
apt update
# Install the Grub2 packages amd64-signed
apt install grub-efi-amd64 grub-efi-
# Reinstall/configure grub =/boot/ efi \ r-id=ubuntu --recheck --no-floppy
grub-install --target=x86_64-efi --efi-directory
--bootloade
# Update the intramfs images
update-intramfs -c -k all
# Change the repo sources back to Jammy sources. list.jammy /etc/apt/ sources. list
cp /etc/apt/
apt update
# Test: (Skip if snapshots already exist...) ubuntu_ 2nlhsy@ 20230204a ubuntu_ 2nlhsy@ 20230204b ubuntu_ 2nlhsy@ 20230204c
zfs snapshot bpool/BOOT/
zfs snapshot bpool/BOOT/
zfs snapshot bpool/BOOT/
zfs list -t snapshot
# Output: BOOT/ubuntu_ 2nlhsy@ 20230204a 0B - 298M - BOOT/ubuntu_ 2nlhsy@ 20230204b 0B - 298M - BOOT/ubuntu_ 2nlhsy@ 20230204c 0B - 298M -
#NAME USED AVAIL REFER MOUNTPOINT
#bpool/
#bpool/
#bpool/
# Exit Gracefully:
exit
mount | grep -v zfs | tac | awk '/\/mnt/ {print $3}' | \
xargs -i{} umount -lf {}
zpool export -a
reboot
>>>