Core Documentation
J4 Quick PC Setup & User Guide
J4 GNU/Linux Laptop Service Manual
Additional Documentation
J4 i7 Laptop: Ubuntu 20.04 / 20.10 / Linux Mint 20 / 20.1 requires an OEM kernel temporarily: apt install linux-oem-20.04 && sudo reboot 0
J4 Laptop: Ubuntu 20.04 / 20.10 / Linux Mint 20 / 20.1 requires an HWE kernel: sudo apt install linux-image-generic-hwe-20.04-edge && sudo reboot 0
J4 Laptop: Debian 11 requires a backported kernel for full support (use https://cdimage.debian.org/cdimage/release/current-live/amd64/iso-hybrid... to re-install):
1. Add below line to /etc/apt/sources.list
deb http://deb.debian.org/debian bullseye-backports main
2. Run the following commands to install the latest kernel from backports:
sudo apt update
sudo apt upgrade
sudo apt install linux-image-amd64 -t bullseye-backports