Ubuntu MATE 21.10 Impish Indri Nexus 7 2012 rev. E1565 kernel-5.15.0-rc4

default user was ubuntu, default passwd was ubuntu

Đã thử và thành công boot được Ubuntu 21.10 Impish Indri lên Nexus 7 2012, tạo local user/passwd theo bài viết này cho cloud-init như 1 phần bổ sung khi bị cloud-init: used fallback datasource thì module cuối trong cloud.cfg không chạy để khởi tạo user/passwd ubuntu:ubuntu
https://stackoverflow.com/questions/61591885/how-do-i-set-a-custom-password-with-cloud-init-on-ubuntu-20-04

Đây là bản preinstalled nên không có GUI và cần có micro usb-otg keyboard để nhập lệnh

Cách kiểm tra Nexus 7 2012 là mã cũ PM269 hay E1565. Tham khảo:
https://wiki.postmarketos.org/wiki/Google_Nexus_7_2012_(asus-grouper)

Google Nexus 7 2012 (asus-grouper) - postmarketOS

wiki.postmarketos.org

Variants

• grouper rev. PM269 - without GSM (oldest)
• grouper rev. E1565 - without GSM (modern revision)
• tilapia rev. E1565 - with GSM

Do I have grouper or tilapia?

TWRP (adb shell) $ grep androidboot.baseband=unknown /proc/cmdline && echo grouper || echo tilapia

Which hardware revision of grouper do I have?

TWRP (adb shell) $ find /sys/devices/ | grep -c max776 && echo You have E1565

TWRP (adb shell) $ find /sys/devices/ | grep -c tps6591 && echo You have PM269

Install Alpine Linux on Virtualbox:


Đặt máy về bootloader, để flash boot.img qua fastboot hoặc dùng method của postmarketOS. Kết nối Nexus 7 vào máy tính qua cáp usb chuẩn 1.0 → 2.0

$ sudo adb start-server

$ sudo adb reboot bootloader

$ sudo fastboot flash boot <boot_filename>.img

Vào TWRP for grouper 3.3.1-0 trở lên https://dl.twrp.me/grouper/

Download TWRP for grouper

Download TWRP Open Recovery for grouper

dl.twrp.me

Dùng adb shell trên PC/laptop hoặc Advance/Terminal trong twrp để umount mmcblk0p9 (làm 2 lần cho chắc ăn) [với tilapia (bản 3G) là mmcblk0p10]

1. TWRP(Advance → Terminal): $ df
2. TWRP(Advance → Terminal): $ umount /dev/block/mmcblk0p__ <- fill partition number
3. TWRP(Advance → Terminal): $ umount /dev/block/mmcblk0p__ <- fill partition number

On PC/Laptop terminal:

$ adb push <rootfs_filename>.img /dev/block/mmcblk0p__ <- fill partition number

• grouper has likely data on /dev/block/mmcblk0p9 but make sure!
• tilapia has likely data on /dev/block/mmcblk0p10 but make sure!

remove cloud-init, snapd, needrestart service
https://askubuntu.com/questions/1346874/failed-to-check-for-processor-microcode-upgrades-at-the-end-of-apt-get-how-ca

# sudo apt --purge remove needrestart

Rotate fbcon

# sudo su

# echo 1 | sudo tee /sys/class/graphics/fbcon/rotate

# echo 1 | sudo tee /sys/class/graphics/fbcon/rotate_all

# sudo apt install network-manager

# chown -hvR ubuntu /home/ubuntu

Install xubuntu-core

# sudo apt install xubuntu-core^

# sudo apt install bluez blueman htop neofetch iio-sensor-proxy perl x11-xserver-utils

grate-driver 2D/3D GPU accelerate on launchpad.net
https://launchpad.net/~grate-driver/+archive/ubuntu/ppa/+packages?field.name_filter=&field.status_filter=published&field.series_filter=impish

Packages in “grate-driver” : grate-driver : “grate-driver” team

Opensource drivers for NVIDIA Tegra from the GRATE project https://github.com/grate-driver

launchpad.net

# sudo add-apt-repository ppa:grate-driver/ppa

# sudo apt update

# sudo apt-get install alsa-ucm-conf libvdpau-tegra xserver-xorg-video-opentegra linux-firmware libd3dadapter9-mesa libegl-mesa0 libgbm1 libgl1-mesa-dri libglapi-mesa libglx-mesa0 libosmesa6 mesa-opencl-icd mesa-va-drivers mesa-vdpau-drivers mesa-vulkan-drivers

Rotate screen
https://gitlab.com/gullradriel/asus-grouper-nexus-7-sensor-daemon

Các phần mềm hỗ trợ để trong /opt

Image source là Ubuntu MATE 21.10 rpi armhf
https://releases.ubuntu-mate.org/impish/armhf/ubuntu-mate-21.10-beta1-desktop-armhf+raspi.img.xz

Image source là Raspberry Pi Generic (Hard-Float) preinstalled server image:
https://cdimage.ubuntu.com/ubuntu/releases/21.10/release/ubuntu-21.10-preinstalled-server-armhf+raspi.img.xz

Ubuntu MATE guide:
https://tinhte.vn/thread/ubuntu-mate-20-04-3-lts-nexus-7-2012-rev-e1565-kernel-5-15-0-rc4-next-20211011-postmarketos-grate.3198632/

Ubuntu MATE 20.04.4 LTS Nexus 7 2012 rev. E1565 kernel 5.15.0-rc4-next-20211011-postmarketos-grate | Viết bởi LuxiTD

Vừa làm xong Ubuntu Mate cho Nexus 7 2012 mainline kernel-5.9-rc2-next-grate, kernel-5.14-rc3-next-20210729-grate và kernel-5.15.0-rc4-next-20211011-postmarketos-grate theo hướng dẫn của Worldblender trên xda-developers https://forum.

tinhte.vn

Xem thêm hướng dẫn trong bài post này:
https://tinhte.vn/thread/ubuntu-21-04-1-hirsute-hippo-pre-image-cho-nexus-7-2012-wifi-rev-e1565-kernel-5-14-rc3-next-grate.3392201/

Tham khảo: https://forum.xda-developers.com/t/linux-on-the-nexus-7-2012-wifi-rev-e1565-grouper-2023-edition.4323099/