Ubuntu 16.04无法关闭电源。当我转到屏幕右上方的图标并单击关闭时，它不会关闭。我跑了shutdown -h now，这就是我得到的：
tanner@tanner-x151x:~$ shutdown -h now
Failed to set wall message, ignoring: Interactive authentication required.
Failed to power off system via logind: Interactive authentication required.
Failed to start poweroff target: Interactive authentication required.
See system logs and 'systemctl status poweroff.target' for details.
Failed to open /dev/initctl: Permission denied
Failed to talk to init daemon.
tanner@tanner-x151x:~$ sudo shutdown -h now
[sudo] password for tanner:
Failed to start poweroff target: Transaction is destructive.
5ee system logs and 'systemctl status poweroff.target' for details.
tanner@tanner-x151x:~$ sudo halt now
Too many arguments.
tanner@tanner-x151x:~$ systemctl status poweroff.target
poweroff.target - Power-off
Loaded: loaded (/lib/systemd/system/poweroff.target; disabled; vendor preset:
Active: inactive (dead)
Docs: man:systemd.special(7)
我不知道为什么会这样或如何解决。任何帮助，将不胜感激。
这个“交易是破坏性的”消息听起来很有趣。
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乔斯
systemctl status poweroff.target这时怎么说？
老实说，@ Jos找不到此文件。
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Enneptt '16
这是一个命令。在终端上输入
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乔斯（Jos）
systemctl status poweroff.target。
我输入了它，这就是我得到的'tanner @ tanner-X751LX：〜$ systemctl状态poweroff.target●poweroff.target-Power-Off已加载：已加载（/lib/systemd/system/poweroff.target；已禁用；供应商预设：有效：无效（失效）文档：man：systemd.special（7）'
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Enneptt
sudo shutdown -P now吗？我知道这几乎与-h相同，但是通过命令我从来没有遇到问题。