W: 无法下载 http://ppa.launchpad.net/loneowais/fogger/ubuntu/dists/trusty/main/source/Sources  404  Not Found

W: 无法下载 http://ppa.launchpad.net/loneowais/fogger/ubuntu/dists/trusty/main/binary-amd64/Packages  404  Not Found

W: 无法下载 http://ppa.launchpad.net/loneowais/fogger/ubuntu/dists/trusty/main/binary-i386/Packages  404  Not Found

E: 部分索引文件下载失败。如果忽略它们，那将转而使用旧的索引文件。

解决：

sudo add-apt-repository --remove ppa:loneowais/fogger