小编jus*_*guy的帖子

您好，我在我的 T420 上使用 Ubuntu 18.04，配备 6GB RAM、英特尔奔腾 i5-2520M 和英特尔 HD3000。我有双启动和 Windows 10。我想知道为什么（从 16.04 升级后）Ub​​untu 18.04 启动这么长时间。以下是一些信息：

systemd-analyze critical-chain

The time after the unit is active or started is printed after the "@" 
character.
The time the unit takes to start is printed after the "+" character.

graphical.target @41.691s
??multi-user.target @41.691s
  ??snapd.seeded.service @31.971s +20ms
    ??snapd.service @27.445s +4.524s
      ??basic.target @27.429s
        ??sockets.target @27.429s
          ??snapd.socket @27.375s +54ms
            ??sysinit.target @27.336s
              ??cryptsetup.target @27.336s
                ??systemd-ask-password-wall.path @2.708s
                  ??-.mount @2.692s
                    ??system.slice @2.708s
                      ??-.slice @2.692s

systemd-analyze && system-analyze blame

     22.399s …