I have a wine package via a dependency from a package that gives you Silverlight and more up-to-date Adobe Flash for Linux. However, I get an error on startup of Software Center and also will repeatedly get an error icon in the top panel
with a message:
An error occurred, please run Package Manager from the right-click
menu or apt-get in a terminal to see what is wrong. The error message
was: 'Unknown Error: '<class 'KeyError'>'("The cache has no package
named 'wine-staging-i386'")'. This usually means that your installed
packages have unmet dependencies
I have gotten this to go away by doing something, I thought with Synatic, but right now Synaptic Package Manager->Edit->Fix Broken Packages is not fixing it. Selecting that tells me "Successfully fixed dependency problems" but I still have the error icon in the top bar.
Per comment below:
$ sudo apt-get -f install
Reading package lists...
Done Building dependency tree
Reading state information... Done 0 upgraded,
0 newly installed, 0 to remove and 3 not upgraded.
$ sudo apt-get update
Ign http://us.archive.ubuntu.com trusty
InRelease Ign http://ppa.launchpad.net
trusty InRelease Ign
http://us.archive.ubuntu.com trusty-updates InRelease
Ign http://us.archive.ubuntu.com trusty-backports InRelease
Ign http://ppa.launchpad.net trusty InRelease
Hit http://us.archive.ubuntu.com trusty Release.gpg
Get:1 http://us.archive.ubuntu.com trusty-updates Release.gpg [933 B]
Ign http://ppa.launchpad.net trusty InRelease
Get:2 http://us.archive.ubuntu.com trusty-backports Release.gpg [933
B] Hit http://ppa.launchpad.net trusty Release.gpg
Hit http://us.archive.ubuntu.com trusty Release
Get:3 http://us.archive.ubuntu.com trusty-updates Release [62.0 kB]
Hit http://ppa.launchpad.net trusty Release.gpg
Hit http://ppa.launchpad.net trusty Release.gpg
Hit http://ppa.launchpad.net trusty Release
Get:4 http://us.archive.ubuntu.com trusty-backports Release [62.0 kB]
Hit http://ppa.launchpad.net trusty Release
Hit http://ppa.launchpad.net trusty Release
Hit http://us.archive.ubuntu.com trusty/main Sources
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://us.archive.ubuntu.com trusty/restricted Sources
Hit http://us.archive.ubuntu.com trusty/universe Sources
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://us.archive.ubuntu.com trusty/multiverse Sources
Hit http://ppa.launchpad.net trusty/main Translation-en
Hit http://us.archive.ubuntu.com trusty/main amd64 Packages
Hit http://us.archive.ubuntu.com trusty/restricted amd64 Packages
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://us.archive.ubuntu.com trusty/universe amd64 Packages
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://us.archive.ubuntu.com trusty/multiverse amd64 Packages
Hit http://ppa.launchpad.net trusty/main Translation-en
Hit http://us.archive.ubuntu.com trusty/main i386 Packages
Hit http://us.archive.ubuntu.com trusty/restricted i386 Packages
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://us.archive.ubuntu.com trusty/universe i386 Packages
Hit http://us.archive.ubuntu.com trusty/multiverse i386 Packages
Hit http://ppa.launchpad.net trusty/main Translation-en
Hit http://us.archive.ubuntu.com trusty/main Translation-en
Ign http://dl.google.com stable InRelease
Get:5 http://dl.google.com stable Release.gpg [198 B]
Hit http://us.archive.ubuntu.com trusty/multiverse Translation-en
Get:6 http://dl.google.com stable Release [1,347 B]
Get:7 http://dl.google.com stable/main amd64 Packages [1,182 B]
Hit http://us.archive.ubuntu.com trusty/restricted Translation-en
Get:8 http://dl.google.com stable/main i386 Packages [1,181 B]
Hit http://us.archive.ubuntu.com trusty/universe Translation-en
Get:9 http://us.archive.ubuntu.com trusty-updates/main Sources [181
kB] Ign http://dl.google.com stable/main Translation-en_US
Ign http://dl.google.com stable/main Translation-en
Get:10 http://us.archive.ubuntu.com trusty-updates/restricted Sources
[2,564 B] Get:11 http://us.archive.ubuntu.com trusty-updates/universe
Sources [106 kB] Get:12 http://us.archive.ubuntu.com
trusty-updates/multiverse Sources [4,463 B] Get:13
http://us.archive.ubuntu.com trusty-updates/main amd64 Packages [447
kB] Get:14 http://us.archive.ubuntu.com trusty-updates/restricted
amd64 Packages [9,238 B] Get:15 http://us.archive.ubuntu.com
trusty-updates/universe amd64 Packages [254 kB] Get:16
http://us.archive.ubuntu.com trusty-updates/multiverse amd64 Packages
[11.2 kB] Get:17 http://us.archive.ubuntu.com trusty-updates/main i386
Packages [437 kB] Ign http://security.ubuntu.com trusty-security
InRelease Get:18 http://security.ubuntu.com
trusty-security Release.gpg [933 B] Get:19
http://security.ubuntu.com trusty-security Release [62.0 kB]
Get:20 http://us.archive.ubuntu.com trusty-updates/restricted i386
Packages [9,256 B] Get:21 http://us.archive.ubuntu.com
trusty-updates/universe i386 Packages [256 kB] Get:22
http://security.ubuntu.com trusty-security/main Sources [71.8 kB]
Get:23 http://security.ubuntu.com trusty-security/restricted Sources
[2,061 B] Get:24 http://security.ubuntu.com trusty-security/universe
Sources [17.9 kB] Get:25 http://security.ubuntu.com
trusty-security/multiverse Sources [1,896 B] Get:26
http://security.ubuntu.com trusty-security/main amd64 Packages [221
kB] Get:27 http://us.archive.ubuntu.com trusty-updates/multiverse
i386 Packages [11.3 kB] Hit http://us.archive.ubuntu.com
trusty-updates/main Translation-en Hit
http://us.archive.ubuntu.com trusty-updates/multiverse Translation-en
Hit http://us.archive.ubuntu.com trusty-updates/restricted
Translation-en Get:28 http://security.ubuntu.com
trusty-security/restricted amd64 Packages [8,875 B] Hit
http://us.archive.ubuntu.com trusty-updates/universe Translation-en
Get:29 http://us.archive.ubuntu.com trusty-backports/main Sources
[5,298 B] Get:30 http://security.ubuntu.com
trusty-security/universe amd64 Packages [87.8 kB] Get:31
http://us.archive.ubuntu.com trusty-backports/restricted Sources [28
B] Get:32 http://us.archive.ubuntu.com trusty-backports/universe
Sources [21.7 kB] Get:33 http://us.archive.ubuntu.com
trusty-backports/multiverse Sources [1,898 B] Get:34
http://us.archive.ubuntu.com trusty-backports/main amd64 Packages
[5,536 B] Get:35 http://us.archive.ubuntu.com
trusty-backports/restricted amd64 Packages [28 B] Get:36
http://us.archive.ubuntu.com trusty-backports/universe amd64 Packages
[25.4 kB] Get:37 http://us.archive.ubuntu.com
trusty-backports/multiverse amd64 Packages [1,245 B] Get:38
http://us.archive.ubuntu.com trusty-backports/main i386 Packages
[5,550 B] Get:39 http://security.ubuntu.com trusty-security/multiverse
amd64 Packages [3,458 B] Get:40 http://us.archive.ubuntu.com
trusty-backports/restricted i386 Packages [28 B] Hit
http://deb.opera.com stable InRelease
Get:41 http://security.ubuntu.com trusty-security/main i386 Packages
[211 kB] Hit http://deb.opera.com stable/non-free amd64 Packages
Get:42 http://us.archive.ubuntu.com trusty-backports/universe i386
Packages [25.4 kB] Hit http://deb.opera.com stable/non-free i386
Packages Get:43 http://us.archive.ubuntu.com
trusty-backports/multiverse i386 Packages [1,249 B] Hit
http://us.archive.ubuntu.com trusty-backports/main Translation-en
Hit http://us.archive.ubuntu.com trusty-backports/multiverse
Translation-en Hit http://us.archive.ubuntu.com
trusty-backports/restricted Translation-en Get:44
http://us.archive.ubuntu.com trusty-backports/universe Translation-en
[23.6 kB] Ign https://private-ppa.launchpad.net trusty InRelease
Ign https://private-ppa.launchpad.net trusty InRelease
Hit https://private-ppa.launchpad.net trusty Release.gpg
Hit https://private-ppa.launchpad.net trusty Release.gpg
Hit https://private-ppa.launchpad.net trusty Release
Hit https://private-ppa.launchpad.net trusty Release
Hit https://private-ppa.launchpad.net trusty/main amd64 Packages
Ign http://deb.opera.com stable/non-free Translation-en_US
Ign http://us.archive.ubuntu.com trusty/main Translation-en_US
Hit https://private-ppa.launchpad.net trusty/main i386 Packages
Ign http://deb.opera.com stable/non-free Translation-en
Ign http://us.archive.ubuntu.com trusty/multiverse Translation-en_US
Ign http://us.archive.ubuntu.com trusty/restricted Translation-en_US
Ign http://us.archive.ubuntu.com trusty/universe Translation-en_US
Hit https://private-ppa.launchpad.net trusty/main amd64 Packages
Hit https://private-ppa.launchpad.net trusty/main i386 Packages
Get:45 http://security.ubuntu.com trusty-security/restricted i386
Packages [8,846 B] Get:46 http://security.ubuntu.com
trusty-security/universe i386 Packages [87.8 kB] Get:47
http://security.ubuntu.com trusty-security/multiverse i386 Packages
[3,624 B] Hit http://security.ubuntu.com trusty-security/main
Translation-en Hit http://security.ubuntu.com
trusty-security/multiverse Translation-en Hit
http://security.ubuntu.com trusty-security/restricted Translation-en
Ign http://extras.ubuntu.com trusty InRelease
Get:48 http://extras.ubuntu.com trusty Release.gpg [72 B]
Hit http://security.ubuntu.com trusty-security/universe Translation-en
Hit http://extras.ubuntu.com trusty Release
Hit http://extras.ubuntu.com trusty/main Sources
Ign https://private-ppa.launchpad.net trusty/main Translation-en_US
Hit http://extras.ubuntu.com trusty/main amd64 Packages
Ign https://private-ppa.launchpad.net trusty/main Translation-en
Hit http://extras.ubuntu.com trusty/main i386 Packages
Ign https://private-ppa.launchpad.net trusty/main Translation-en_US
Ign https://private-ppa.launchpad.net trusty/main Translation-en
Ign http://extras.ubuntu.com trusty/main Translation-en_US
Ign http://extras.ubuntu.com trusty/main Translation-en
Fetched 2,764 kB in 33s (82.6 kB/s)
Reading package lists... Done
$ sudo apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 8 not upgraded.
Best Answer
You can just "resolve" this by installing all pending updates. The message will go away. It is rather annoying, but there's not much you can do about it. For more information check this bug report: https://bugs.launchpad.net/pipelight/+bug/1318321