Comment 0 for bug 1597537

Release:

$ lsb_release -rd
Description: Ubuntu 16.04 LTS
Release: 16.04

Pacakge:
$ apt-cache policy update-notifier
update-notifier:
  Installed: 3.168
  Candidate: 3.168
  Version table:
 *** 3.168 500
        500 http://gb.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
        100 /var/lib/dpkg/status

What should happen:

$/usr/lib/update-notifier$ /usr/lib/update-notifier/apt-check -p
wine-devel-amd64
wine-devel
google-chrome-stable
winehq-devel
wine-devel-i386

What actually happened:

$/usr/lib/update-notifier/apt-check -p
E: Unknown Error: '<class 'KeyError'>' ("The cache has no package named 'wine-devel-i386'")

Whats wrong:

apt_check.py line 143:

ignored = ul._is_ignored_phased_update(aptcache[pkg.name])

needs to use a full package name that includes the arch:

ignored = ul._is_ignored_phased_update(aptcache[pkg.get_fullname(False)])

There are many other reports of this problem - the suggested 'solution' in many cases is to run package manager/apt to install all the updates which then 'fixes' the problem until the next
update for wine becomes available.

https://bugs.launchpad.net/pipelight/+bug/1318321
http://askubuntu.com/questions/409243/update-notifier-doesnt-work-cache-issue
https://www.kubuntuforums.net/showthread.php?64504-Update-notifier-doesn-t-work-cache-issue
http://askubuntu.com/questions/581480/unknown-error-class-keyerror-the-cache-has-no-package-named-wine-stagin
http://askubuntu.com/questions/594888/how-can-i-resolve-repeated-package-dependency-error-involving-wine-staging-i38
http://ubuntuforums.org/showthread.php?t=2222677