[Bug 1570141] Re: Can't drop privileges for downloading as file '/var/lib/update-notifier/package-data-downloads/partial/andale32.exe' couldn't be accessed by user '_apt'. - pkgAcquire::Run (13: Permission denied)

[Marius Gedminas]

Also happens for adobe-flashplugin updates.  Full cron mail output:

/etc/cron.daily/logrotate:
gzip: stdin: file size changed while zipping
/etc/cron.daily/pov-simple-backup:
tar: root/.gnupg/S.gpg-agent: socket ignored
/etc/cron.daily/update-notifier-common:
N: Ignoring file '50unattended-upgrades.ucf-dist' in directory '/etc/apt/apt.conf.d/' as it has an invalid filename extension
Get:1 http://archive.canonical.com/pool/partner/a/adobe-flashplugin/adobe-flashplugin_20160407.1.orig.tar.gz [27.0 MB]
Fetched 27.0 MB in 1s (16.4 MB/s)
W: Can't drop privileges for downloading as file '/var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugin_20160407.1.orig.tar.gz'
couldn't be accessed by user '_apt'. - pkgAcquire::Run (13: Permission denied)
flashplugin-installer: downloading http://archive.canonical.com/pool/partner/a/adobe-flashplugin/adobe-flashplugin_20160407.1.orig.tar.gz
Installing from local file /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugin_20160407.1.orig.tar.gz
Flash Plugin installed.


ls -ld /var/lib/update-notifier/package-data-downloads/partial/
drwxr-xr-x 2 root root 4096 Apr 24 07:38 /var/lib/update-notifier/package-data-downloads/partial/

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https://bugs.launchpad.net/bugs/1570141

Title:
  Can't drop privileges for downloading as file '/var/lib/update-
  notifier/package-data-downloads/partial/andale32.exe' couldn't be
  accessed by user '_apt'. - pkgAcquire::Run (13: Permission denied)

Status in update-notifier package in Ubuntu:
  Incomplete

Bug description:
  ttf-mscorefonts-installer require additional download from external
  server (non deb package), but download not completed because have the
  error:

  Can't drop privileges for downloading as file '/var/lib/update-
  notifier/package-data-downloads/partial/andale32.exe' couldn't be
  accessed by user '_apt'. - pkgAcquire::Run (13: Permission denied)

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: update-notifier-common 3.168
  Uname: Linux 4.5.0-040500-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
  ApportVersion: 2.20.1-0ubuntu1
  Architecture: amd64
  Date: Wed Apr 13 20:45:36 2016
  ExecutablePath: /usr/lib/update-notifier/package-data-downloader
  InstallationDate: Installed on 2016-04-10 (3 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160408)
  InterpreterPath: /usr/bin/python3.5
  PackageArchitecture: all
  ProcEnviron:
   SHELL=/bin/bash
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=pt_BR.UTF-8
   LANGUAGE=pt_BR:pt:en
  SourcePackage: update-notifier
  UpgradeStatus: No upgrade log present (probably fresh install)

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