我尝试了所有方法，从 deb 安装（出现“依赖性无法满足”错误）以及从命令行上的 ppa 安装。如果能提供任何建议，我将不胜感激。我在 HP Pavillion 笔记本电脑（64 位）上使用 Ubuntu 15.10。提前致谢，Bernard
以下是完整的安装历史记录：
~$ sudo add-apt-repository ppa:fyrmir/livewallpaper-stable
[sudo] password for bernard:
Stable releases of LiveWallpaper
More info: https://launchpad.net/~fyrmir/+archive/ubuntu/livewallpaper-stable
Press [ENTER] to continue or ctrl-c to cancel adding it
gpg: keyring `/tmp/tmpk7ndat33/secring.gpg' created
gpg: keyring `/tmp/tmpk7ndat33/pubring.gpg' created
gpg: requesting key B2D77075 from hkp server keyserver.ubuntu.com
gpg: /tmp/tmpk7ndat33/trustdb.gpg: trustdb created
gpg: key B2D77075: public key "Launchpad PPA for Maximilian Schnarr" imported
gpg: Total number processed: 1
gpg: imported: 1 (RSA: 1)
OK
bernard@bernard-HP-Pavilion-dv3-Notebook-PC:~$ sudo apt-get update
Hit http://de.archive.ubuntu.com wily InRelease
Hit http://archive.ubuntu.com wily InRelease
Hit http://archive.canonical.com wily InRelease
Ign http://dl.google.com stable InRelease
Hit http://de.archive.ubuntu.com wily-updates InRelease
Ign http://ppa.launchpad.net wily InRelease
Hit http://dl.google.com stable Release.gpg
Hit http://de.archive.ubuntu.com wily-backports InRelease
Ign http://ppa.launchpad.net wily InRelease
Hit http://dl.google.com stable Release
Hit http://de.archive.ubuntu.com wily-proposed InRelease
Ign http://ppa.launchpad.net wily InRelease
Ign http://ppa.launchpad.net wily InRelease
Get:1 http://security.ubuntu.com wily-security InRelease [64,4 kB]
Hit http://ppa.launchpad.net wily Release.gpg
Ign http://ppa.launchpad.net wily Release.gpg
Hit http://archive.ubuntu.com wily/main Sources
Ign http://ppa.launchpad.net wily Release.gpg
Hit http://archive.ubuntu.com wily/restricted Sources
Hit http://archive.canonical.com wily/partner Sources
Ign http://ppa.launchpad.net wily Release.gpg
Hit http://archive.canonical.com wily/partner amd64 Packages
Hit http://ppa.launchpad.net wily Release
Hit http://dl.google.com stable/main amd64 Packages
Hit http://archive.canonical.com wily/partner i386 Packages
Ign http://ppa.launchpad.net wily Release
Ign http://ppa.launchpad.net wily Release
Hit http://dl.google.com stable/main i386 Packages
Ign http://ppa.launchpad.net wily Release
Ign http://archive.canonical.com wily/partner Translation-en
Get:2 http://security.ubuntu.com wily-security/main Sources [17,9 kB]
Get:3 http://security.ubuntu.com wily-security/multiverse Sources [1.922 B]
Ign http://dl.google.com stable/main Translation-en_US
Ign http://dl.google.com stable/main Translation-en
Get:4 http://security.ubuntu.com wily-security/universe Sources [4.714 B]
Get:5 http://security.ubuntu.com wily-security/restricted Sources [2.854 B]
Get:6 http://security.ubuntu.com wily-security/main amd64 Packages [55,1 kB]
Hit http://ppa.launchpad.net wily/main amd64 Packages
Get:7 http://security.ubuntu.com wily-security/restricted amd64 Packages [10,9 kB]
Hit http://ppa.launchpad.net wily/main i386 Packages
Hit http://ppa.launchpad.net wily/main Translation-en
Get:8 http://security.ubuntu.com wily-security/universe amd64 Packages [25,9 kB]
Get:9 http://security.ubuntu.com wily-security/multiverse amd64 Packages [5.859 B]
Hit http://de.archive.ubuntu.com wily-backports/restricted Sources
Hit http://de.archive.ubuntu.com wily-backports/multiverse Sources
Get:10 http://security.ubuntu.com wily-security/main i386 Packages [54,3 kB]
Hit http://de.archive.ubuntu.com wily-backports/restricted amd64 Packages
Hit http://de.archive.ubuntu.com wily-backports/multiverse amd64 Packages
Get:11 http://security.ubuntu.com wily-security/restricted i386 Packages [10,8 kB]
Hit http://de.archive.ubuntu.com wily-backports/restricted i386 Packages
Hit http://de.archive.ubuntu.com wily-backports/multiverse i386 Packages
Get:12 http://security.ubuntu.com wily-security/universe i386 Packages [26,0 kB]
Hit http://de.archive.ubuntu.com wily-backports/multiverse Translation-en
Hit http://de.archive.ubuntu.com wily-backports/restricted Translation-en
Get:13 http://security.ubuntu.com wily-security/multiverse i386 Packages [6.052 B]
Hit http://de.archive.ubuntu.com wily/main Sources
Hit http://de.archive.ubuntu.com wily/multiverse Sources
Hit http://de.archive.ubuntu.com wily-proposed/restricted Sources
Get:14 http://de.archive.ubuntu.com wily-proposed/multiverse Sources [826 B]
Hit http://de.archive.ubuntu.com wily-proposed/restricted amd64 Packages
Hit http://de.archive.ubuntu.com wily-proposed/multiverse amd64 Packages
Hit http://de.archive.ubuntu.com wily-proposed/restricted i386 Packages
Hit http://security.ubuntu.com wily-security/main Translation-en
Hit http://security.ubuntu.com wily-security/multiverse Translation-en
Err http://ppa.launchpad.net wily/main amd64 Packages
404 Not Found
Hit http://de.archive.ubuntu.com wily-proposed/restricted Translation-en
Err http://ppa.launchpad.net wily/main i386 Packages
404 Not Found
Hit http://security.ubuntu.com wily-security/restricted Translation-en
Ign http://ppa.launchpad.net wily/main Translation-en_US
Hit http://de.archive.ubuntu.com wily/universe Sources
Ign http://ppa.launchpad.net wily/main Translation-en
Hit http://de.archive.ubuntu.com wily/restricted Sources
Err http://ppa.launchpad.net wily/main amd64 Packages
404 Not Found
Hit http://de.archive.ubuntu.com wily/main amd64 Packages
Hit http://security.ubuntu.com wily-security/universe Translation-en
Err http://ppa.launchpad.net wily/main i386 Packages
404 Not Found
Hit http://de.archive.ubuntu.com wily/restricted amd64 Packages
Hit http://de.archive.ubuntu.com wily/universe amd64 Packages
Ign http://ppa.launchpad.net wily/main Translation-en_US
Hit http://de.archive.ubuntu.com wily/multiverse amd64 Packages
Ign http://ppa.launchpad.net wily/main Translation-en
Hit http://de.archive.ubuntu.com wily/main i386 Packages
Err http://ppa.launchpad.net wily/main amd64 Packages
404 Not Found
Hit http://de.archive.ubuntu.com wily/restricted i386 Packages
Err http://ppa.launchpad.net wily/main i386 Packages
404 Not Found
Hit http://de.archive.ubuntu.com wily/universe i386 Packages
Ign http://ppa.launchpad.net wily/main Translation-en_US
Hit http://de.archive.ubuntu.com wily/multiverse i386 Packages
Ign http://ppa.launchpad.net wily/main Translation-en
Hit http://de.archive.ubuntu.com wily/main Translation-en
Hit http://de.archive.ubuntu.com wily/multiverse Translation-en
Hit http://de.archive.ubuntu.com wily/restricted Translation-en
Hit http://de.archive.ubuntu.com wily/universe Translation-en
Hit http://de.archive.ubuntu.com wily-updates/main Sources
Hit http://de.archive.ubuntu.com wily-updates/multiverse Sources
Hit http://de.archive.ubuntu.com wily-updates/universe Sources
Hit http://de.archive.ubuntu.com wily-updates/restricted Sources
Hit http://de.archive.ubuntu.com wily-updates/main amd64 Packages
Hit http://de.archive.ubuntu.com wily-updates/restricted amd64 Packages
Hit http://de.archive.ubuntu.com wily-updates/universe amd64 Packages
Hit http://de.archive.ubuntu.com wily-updates/multiverse amd64 Packages
Hit http://de.archive.ubuntu.com wily-updates/main i386 Packages
Hit http://de.archive.ubuntu.com wily-updates/restricted i386 Packages
Hit http://de.archive.ubuntu.com wily-updates/universe i386 Packages
Hit http://de.archive.ubuntu.com wily-updates/multiverse i386 Packages
Hit http://de.archive.ubuntu.com wily-updates/main Translation-en
Hit http://de.archive.ubuntu.com wily-updates/multiverse Translation-en
Hit http://de.archive.ubuntu.com wily-updates/restricted Translation-en
Hit http://de.archive.ubuntu.com wily-updates/universe Translation-en
Hit http://de.archive.ubuntu.com wily-backports/main Sources
Hit http://de.archive.ubuntu.com wily-backports/universe Sources
Hit http://de.archive.ubuntu.com wily-backports/main amd64 Packages
Hit http://de.archive.ubuntu.com wily-backports/universe amd64 Packages
Hit http://de.archive.ubuntu.com wily-backports/main i386 Packages
Hit http://de.archive.ubuntu.com wily-backports/universe i386 Packages
Hit http://de.archive.ubuntu.com wily-backports/main Translation-en
Hit http://de.archive.ubuntu.com wily-backports/universe Translation-en
Hit http://de.archive.ubuntu.com wily-proposed/main Sources
Hit http://de.archive.ubuntu.com wily-proposed/universe Sources
Hit http://de.archive.ubuntu.com wily-proposed/main amd64 Packages
Hit http://de.archive.ubuntu.com wily-proposed/universe amd64 Packages
Hit http://de.archive.ubuntu.com wily-proposed/main i386 Packages
Hit http://de.archive.ubuntu.com wily-proposed/multiverse i386 Packages
Hit http://de.archive.ubuntu.com wily-proposed/universe i386 Packages
Hit http://de.archive.ubuntu.com wily-proposed/main Translation-en
Hit http://de.archive.ubuntu.com wily-proposed/multiverse Translation-en
Hit http://de.archive.ubuntu.com wily-proposed/universe Translation-en
Fetched 288 kB in 6s (46,1 kB/s)
W: Failed to fetch http://ppa.launchpad.net/fyrmir/livewallpaper-daily/ubuntu/dists/wily/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/fyrmir/livewallpaper-daily/ubuntu/dists/wily/main/binary-i386/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/fyrmir/livewallpaper-stable/ubuntu/dists/wily/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/fyrmir/livewallpaper-stable/ubuntu/dists/wily/main/binary-i386/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/muscovy/ppa/ubuntu/dists/wily/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/muscovy/ppa/ubuntu/dists/wily/main/binary-i386/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.
bernard@bernard-HP-Pavilion-dv3-Notebook-PC:~$ sudo apt-get install livewallpaper livewallpaper-config livewallpaper-indicator livewallpaper-nautilus
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package livewallpaper
E: Unable to locate package livewallpaper-config
E: Unable to locate package livewallpaper-indicator
E: Unable to locate package livewallpaper-nautilus
答案1
您无法livewallpaper从这些 PPA（ppa:fyrmir/livewallpaper-stable和ppa:fyrmir/livewallpaper-daily）进行安装，因为它们都不包含适合您的 Ubuntu 版本（15.10 Wily）的版本。
您需要找到另一个也支持最新 Ubuntu 版本的 PPA。
要删除您添加的两个不可用的 PPA，请运行以下命令：
sudo add-apt-repository --remove ppa:fyrmir/livewallpaper-stable
sudo add-apt-repository --remove ppa:fyrmir/livewallpaper-daily
同样的问题（没有适用于 Ubuntu 15.10/Wily 版本的构建）也发生在您安装的另一个 PPA 上（ppa:muscovy/ppa）。您也应该将其删除：
sudo add-apt-repository --remove ppa:muscovy/ppa