package qgis (not installed) failed to install/upgrade: trying to overwrite '/usr/share/icons/hicolor/128x128/apps/qgis.png', which is also in package qgis-common 1:2.18.16+git20180222+9c2a0f8+24xenial

[Éric Mermet]

Just after upgrade from 16.04 to 18.04

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: qgis (not installed)
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
Date: Thu Apr 26 20:35:07 2018
DpkgTerminalLog:
 Preparing to unpack .../00-qgis_1%3a3.0.1+git20180420+a6ad7db+27artful_amd64.deb ...
 Unpacking qgis (1:3.0.1+git20180420+a6ad7db+27artful) over (1:2.18.16+git20180222+9c2a0f8+24xenial) ...
 dpkg: error processing archive /tmp/apt-dpkg-install-fPzSwg/00-qgis_1%3a3.0.1+git20180420+a6ad7db+27artful_amd64.deb (--unpack):
  trying to overwrite '/usr/share/icons/hicolor/128x128/apps/qgis.png', which is also in package qgis-common 1:2.18.16+git20180222+9c2a0f8+24xenial
DuplicateSignature:
 package:qgis:(not installed)
 Unpacking qgis (1:3.0.1+git20180420+a6ad7db+27artful) over (1:2.18.16+git20180222+9c2a0f8+24xenial) ...
 dpkg: error processing archive /tmp/apt-dpkg-install-fPzSwg/00-qgis_1%3a3.0.1+git20180420+a6ad7db+27artful_amd64.deb (--unpack):
  trying to overwrite '/usr/share/icons/hicolor/128x128/apps/qgis.png', which is also in package qgis-common 1:2.18.16+git20180222+9c2a0f8+24xenial
ErrorMessage: trying to overwrite '/usr/share/icons/hicolor/128x128/apps/qgis.png', which is also in package qgis-common 1:2.18.16+git20180222+9c2a0f8+24xenial
InstallationDate: Installed on 2017-07-21 (279 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3
PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2
 apt 1.6.1
SourcePackage: qgis
Title: package qgis (not installed) failed to install/upgrade: trying to overwrite '/usr/share/icons/hicolor/128x128/apps/qgis.png', which is also in package qgis-common 1:2.18.16+git20180222+9c2a0f8+24xenial
UpgradeStatus: No upgrade log present (probably fresh install)

[Brian Murray (brian-murray)]

These qgis package versions appear to be from a PPA and not the official Ubuntu archive, as such there is nothing we, the developers of Ubuntu, can do about this. You'll need to take it up with the maintainer of the PPA.