Halium 12.0 + LineageOS 19.1 + Ubuntu Touch (Focal 20.04) for Samsung Galaxy S10 (beyond1lte) Build rootfs From Scratch

BaShMu

I'm trying to build a root file system for the device;

Device codename: beyond1lte
Device model: Samsung Galaxy S10 (SM-G973F)
Chipset: Exynos 9820
Halium version: 12.0
LineageOS version: 19.1
Ubuntu Touch version: Focal 20.04

The instructions I'm using come from ChatGPT which appears to be very outdated in this instance. It tells me to make the file system with UBports rootfs-builder from;

https://github.com/ubports/rootfs-builder.git

Which isn't available at that link.

Can anyone please point me in the right direction to this tool or something similar for building file systems for Ubuntu Touch.

faveoled

@BaShMu this tutorial includes kernel compilation and rootfs creation after it:
https://docs.ubports.com/en/latest/porting/build_and_boot/standalone_kernel_build.html

BaShMu

The steps I am following are as follows;

Here’s a streamlined step-by-step guide to build Halium 12.0 + LineageOS 19.x + Ubuntu Touch (Focal 20.04) for Samsung Galaxy S10 (beyond1lte) on Parrot Linux, using the exynos9820 kernel tree and vendor_samsung.

🧰 Prerequisites

System Setup (Parrot OS)

Install required packages:

sudo apt update
sudo apt install git-core gnupg flex bison build-essential zip curl zlib1g-dev \
  gcc-multilib g++-multilib libc6-dev-i386 lib32ncurses5-dev x11proto-core-dev \
  libx11-dev lib32z-dev ccache libgl1-mesa-dev libxml2-utils xsltproc unzip \
  fontconfig bc python-is-python3 python3-pip repo lzop

Set up git credentials:

git config --global user.name "Your Name"
git config --global user.email "you@example.com"

️ Create Working Directories

mkdir -p ~/halium-12.0-beyond1lte
cd ~/halium-12.0-beyond1lte

Make sure your build location is on an ext4 partition, not NTFS, or it will fail.

Initialize and Sync Halium + LineageOS Trees

repo init -u https://github.com/Halium/android -b halium-12.0 --depth=1
repo sync -c -j$(nproc --all) --force-sync --no-clone-bundle --no-tags

Clone Required Device Trees

git clone https://github.com/LineageOS/android_device_samsung_beyond1lte -b lineage-19.1 device/samsung/beyond1lte
git clone https://github.com/LineageOS/android_device_samsung_exynos9820-common.git -b lineage-19.1 device/samsung/exynos9820-common
git clone https://github.com/TheMuppets/proprietary_vendor_samsung -b lineage-19.1 vendor/samsung
git clone https://github.com/LineageOS/android_kernel_samsung_exynos9820 -b lineage-19.1 kernel/samsung/exynos9820

️ Apply Halium Patches

Use Halium’s helper script:

bash halium/devices/setup-device device/samsung/beyond1lte

Or apply relevant patches manually from:
https://github.com/Halium/halium-devices/

Make sure to patch:

init
system/core
build
system/sepolicy

️ Prepare Ubuntu Touch Rootfs

Install ubuntu-device-flash and pmbootstrap if needed.

Download rootfs:

mkdir -p ubuntu-touch
cd ubuntu-touch
wget https://cdimage.ubports.com/ubuntu-touch/edge/channel/halium/ubuntu-touch-android12-arm64-rootfs.tar.gz

🧱 Build Halium System

source build/envsetup.sh
lunch lineage_beyond1lte-eng
mka halium-boot
mka systemimage

Output images will be in out/target/product/beyond1lte/

Flash the Device (Example)

fastboot flash boot out/target/product/beyond1lte/halium-boot.img
fastboot flash system out/target/product/beyond1lte/system.img

Then push the rootfs and resize:

adb shell
mkdir /data/rootfs
exit

adb push ubuntu-touch-android12-arm64-rootfs.tar.gz /data/
adb shell
cd /data
tar -xzf ubuntu-touch-android12-arm64-rootfs.tar.gz

Final Steps

Set up libhybris compatibility.
Adjust fstab, init.rc, and udev.
Test Halium Boot → If it gets to root shell, you're almost there.
Deploy Ubuntu Touch via ubports-installer or halium-install.

faveoled

@BaShMu it's an old way of porting devices. Use the tutorial I linked