我没有为 KDE 使用 PPA，只是使用库存版本。我尝试安装 kubuntu-desktop，但失败了：
Unpacking kde-config-telepathy-accounts (4:15.08.2-0ubuntu1) ...
dpkg: error processing archive /var/cache/apt/archives/kde-config-telepathy-accounts_4%3a15.08.2-0ubuntu1_amd64.deb (--unpack):
trying to overwrite '/usr/share/accounts/services/google-im.service', which is also in package account-plugin-google 0.12+15.10.20150723-0ubuntu1
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
/var/cache/apt/archives/kde-config-telepathy-accounts_4%3a15.08.2-0ubuntu1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1) code here
我无法再更新、安装或删除任何软件包。所有操作都会导致错误：
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet …