我在桌上型電腦上安裝了 15.05，最近在筆記型電腦上安裝了它，工作正常，我今天打開它並嘗試進行 apt-get 更新，我在 launchpad.net vim/main 返回中有多個存儲庫404錯誤，我一直犯錯http://ppa.launchpad.netvivid/main amd64 Packages
404 Not Found online 一段時間了，到目前為止我還沒有找到任何有效的東西，有人能給我指出正確的方向嗎？這是輸出的不起作用的存儲庫的完整列表。
Err http://ppa.launchpad.net vivid/main amd64 Packages
404 Not Found
Err http://ppa.launchpad.net vivid/main i386 Packages
404 Not Found
Ign http://ppa.launchpad.net vivid/main Translation-en_US
Ign http://ppa.launchpad.net vivid/main Translation-en
Err http://ppa.launchpad.net vivid/main amd64 Packages
404 Not Found
Err http://ppa.launchpad.net vivid/main i386 Packages
404 Not Found
Ign http://ppa.launchpad.net vivid/main Translation-en_US
Ign http://ppa.launchpad.net vivid/main Translation-en
Fetched 1,960 B in 15s (124 B/s)
W: Failed to fetch http://ppa.launchpad.net/freyja-dev/unity-tweak-tool-daily/ubuntu/dists/vivid/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/freyja-dev/unity-tweak-tool-daily/ubuntu/dists/vivid/main/binary-i386/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/pidgin-developers/ppa/ubuntu/dists/vivid/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/pidgin-developers/ppa/ubuntu/dists/vivid/main/binary-i386/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.
答案1
似乎這些 PPA 還沒有 15.04 生動的軟體包。
https://bugs.launchpad.net/pidgin/+bug/1454598
自從我將 dist 升級到 15.04 後，啟動板存儲庫為 Pidgin 提供了 404：
W：取得失敗http://ppa.launchpad.net/pidgin-developers/ppa/ubuntu/dists/vivid/main/source/Sources404 未找到
W：取得失敗http://ppa.launchpad.net/pidgin-developers/ppa/ubuntu/dists/vivid/main/binary-amd64/Packages404 未找到
W：取得失敗http://ppa.launchpad.net/pidgin-developers/ppa/ubuntu/dists/vivid/main/binary-i386/Packages404 未找到