1.下载官方独立安装程序(联网)进行手动在线安装:

Unity/论坛下载渠道: https://forum.unity.com/threads/unity-on-linux-release-notes-and-known-issues.350256/page-2

UnityHub/论坛下载渠道:https://forum.unity.com/threads/unity-hub-v-1-6-0-is-now-available.640792/

2.需要安装UnityHub(无Hub会无法激活使用)
3.安装依赖

sudo apt install libgconf-2-4