我已经在Ubuntu 16.04上安装了海豚，除了Nautilus以外。当我选择一个文件并转到属性，然后按文件类型选项按钮时，没有任何反应。应该会出现一个窗口，显示可能的应用程序，但是什么也没有发生。 我正在使用东芝PortégéZ30-C-138。 有什么想法吗？
I have installed dolphin, additional to Nautilus on Ubuntu 16.04. When I select a file and go to properties and press the file type options button nothing happens. A window showing possible applications should appear but nothing happens. I'm using a Toshiba Portxc3xa9gxc3xa9 Z30-C-138. Any idea of what is happening?
sudo apt install kde-cli-tools
Fixed it for me in Xubuntu 18.04.
An explanation of what is happening: Dolphin is part of the KDE environment. Nothing happened when you clicked the file type options button because Dolphin was trying to action another part of the KDE environment that was not installed.
I have been having this problem as well on Lubuntu xenial 16.04. Here is a workaround as follows:
It's not ideal, but it seems to work for me for the time being.