我发出了在https://wiki.ubuntu.com/Kernel/LTSEnablementStack 上找到的命令字符串并得到了这个结果：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
account-plugin-facebook : Depends: libaccount-plugin-generic-oauth but it is not going to be …14.04 ×1