JetsonNano learning (6) Big pits and solutions that Jetson stepped on___Continuously updated

The big pit that Jetson stepped on and the solution

---

Error when installing SDK Components using SDK Manager

Error content: The signature of "http://ports.ubuntu.com/ubuntu-ports bionic-security InRelease" is no longer valid
Change the mirror source

sudo cp /etc/apt/sources.list /etc/apt/sources.list.baksudo gedit /etc/apt/sources.list# The source image is annotated by default to improve the speed of apt update, you can uncomment it yourself if necessarydeb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic main restricted universe multiverse# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic main restricted universe multiversedeb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic-updates main restricted universe multiverse# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic-updates main restricted universe multiversedeb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic-backports main restricted universe multiverse# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic-backports main restricted universe multiversedeb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic-security main restricted universe multiverse# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic-security main restricted universe multiversedeb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic-proposed main restricted universe multiversedeb-src https://mirrors.tuna.tsinghua.edu.en/ubuntu-ports/ bionic-proposed main restricted universe multiverse

The terminal realizes the slow SSH connection

sudo vim /etc/ssh/sshd_configUseDNS no # DNS reverse resolution is turned offsystemctl restart sshd #Restart the SSH service