Ubuntu does not restart when the lid is closed
Dec 17, 2020
In this situation, if you restart from SSH, it will not restart at all, but if you open the lid, it will restart properly.
Update Ubuntu 18.04 LTS to 20.04 LTS
Dec 13, 2020
How to upgrade from Ubuntu 18.04 LTS to 20.04 LTS.
How to Use clang instead of gcc in Ubuntu
Sep 26, 2020
The compilation environment in Ubuntu 20.04 LTS source is GCC 9, but the latest version of GCC is already 10. But there is no easy way to install the latest version of GCC 10.