System burning

Ubuntu for Raspberry Pi
old releases of Ubuntu MATE
Mate edition
18.04 Unknown
20.04Mate desktop
Tools

1. format SD card ：SD Card Formatter
2. Burn system ：Win32 Disk Imager

perhaps
Rasp official Ubuntu installation
Here I'm pretending to be 20.04 Of arm64 server

Change before power on SD card system boot Medium network-config

wifis:
  wlan0:
    dhcp4: true
    optional: true
    access-points:
      "XXL":
        password: "********"

After the initial power on and start , Input ubuntu As user and password , Wait for initialization to complete and reset the password , Again

sudo reboot

WiFi There may be various problems with the configuration , It is recommended to plug in the network cable directly

sudo apt update && sudo apt upgrade

Desktop differences , Here I choose xubuntu

sudo apt install xubuntu-desktop
sudo reboot

Graphical interface selection What is LightDM?GDM?

sudo dpkg-reconfigure gdm3
sudo dpkg-reconfigure lightdm

Administrator settings

sudo passwd root
su root

So far, the initial configuration is completed

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IO Oral resources

//GPIO
sudo apt install python3-gpiozero
pinout
//OR
sudo apt install wiringpi
gpio readall

wiringpi error

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Open the exchange space SWAP
..

sudo apt-get install dphys-swapfile
sudo dphys-swapfile swapoff
sudo nano /etc/dphys-swapfile	// Press CTRL + X, Then press Y, Press again ENTER Key to save the file 

Uncomment these two items , And modify the value
CONF_SWAPSIZE=16384 // Twice the size of physical memory
CONF_MAXSWAP= // Leave blank to unlimited

sudo /etc/init.d/dphys-swapfile restart
// or 
sudo dphys-swapfile setup
sudo dphys-swapfile swapon

free -m

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VPN setting

// see CPU framework 
uname -a

ROS install
Only Huawei source has binary-arm64/Packages

sudo wget -O /etc/apt/sources.list https://repo.huaweicloud.com/repository/conf/Ubuntu-Ports-bionic.list
sudo apt update

But still not , Vomit

Various attempts failed , Can't be in raspberry pie 20.04Server / 20.04MATE Installation on ROS Noetic

Wait for raspberry pie 22.04 Release to see if you can install ROS2

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Intel Realsense I won't support it ARM64 framework

Garbage raspberry pie ruined my youth

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Use it as a toy