14.04 LTS 中缺少系统设置

14.04 LTS 中缺少系统设置

我刚刚安装了 14.04 并尝试在 Skype 上交谈,但对方听不到我的声音。我尝试从系统设置中检查声音设置,发现缺少系统设置。我运行命令sudo apt-get install ubuntu-desktop并收到错误消息

Processing was halted because there were too many errors.
Error: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Launch helper exited with unknown return code 1
E: Sub-process /usr/bin/dpkg returned an error code (1)

我后来运行了该命令 sudo apt-get install unity-control-center,但仍然收到消息

Error: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Launch helper exited with unknown return code 1
E: Sub-process /usr/bin/dpkg returned an error code (1)

同时,每次打开笔记本电脑时总会弹出一条错误消息:

System Program Problem detected
Do you want to report problem?

我也通过 Ubuntu 软件中心卸载并重新安装了系统设置(Unity 控制中心),但它仍然不起作用。

任何紧急帮助都将不胜感激。谢谢

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