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updates | March 29, 2026

Unable to install paper icons theme [E: Sub-process /usr/bin/dpkg returned an error code (1)] 18.04.3 XFCE

I tried installing the paper icon theme to get a better looking xfce DE after an r/unixporn post I liked however following the insructions at this link returns this and I really don't know how dpkg works and what could be wrong with it, already tried rebooting, deleting the Paper folder or following a couple of commands I found googling for dpkg returned an error code(1) but nothing seemed to work

ubuntu@RPi4:~$ sudo apt install paper-icon-theme Reading package lists... Done Building dependency tree Reading state information... Done The following NEW packages will be installed: paper-icon-theme 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. Need to get 0 B/41.4 MB of archives. After this operation, 78.9 MB of additional disk space will be used. (Reading database ... 198269 files and directories currently installed.) Preparing to unpack .../paper-icon-theme_1.5.723-201905252133~daily~ubuntu18.04.1_all.deb ... Unpacking paper-icon-theme (1.5.723-201905252133~daily~ubuntu18.04.1) ... dpkg: error processing archive /var/cache/apt/archives/paper-icon-theme_1.5.723-201905252133~daily~ubuntu18.04.1_all.deb (--unpack): trying to overwrite '/usr/share/icons/Paper/cursor.theme', which is also in package paper-cursor-theme 1.4+r696~daily~ubuntu18.04.1 dpkg-deb: error: paste subprocess was killed by signal (Broken pipe) Errors were encountered while processing: /var/cache/apt/archives/paper-icon-theme_1.5.723-201905252133~daily~ubuntu18.04.1_all.deb E: Sub-process /usr/bin/dpkg returned an error code (1)What can I do to get this theme working?

The command

apt-cache policy paper-cursor-theme paper-icon-theme

 ubuntu@RPi4:~$ apt-cache policy paper-cursor-theme paper-icon-theme paper-cursor-theme: Installed: 1.4+r696~daily~ubuntu18.04.1 Candidate: 1.4+r696~daily~ubuntu18.04.1 Version table: *** 1.4+r696~daily~ubuntu18.04.1 100 100 /var/lib/dpkg/status
paper-icon-theme: Installed: (none) Candidate: 1.5.723-201905252133~daily~ubuntu18.04.1 Version table: 1.5.723-201905252133~daily~ubuntu18.04.1 500 500 bionic/main arm64 Packages
2

1 Answer

It looks like you got conflict between paper-cursor-theme and paper-icon-theme packages.

The ppa:snwh/ppa PPA description contains the info that cursors and icons are provided with it:

This PPA contains packages for the projects from snwh.org (by Sam Hewitt) including:
...
- Paper icon and cursor themes
...

So to resolve the conflict you need to remove paper-cursor-theme package with:

sudo apt-get remove paper-cursor-theme

and then install paper-icon-theme with:

sudo apt-get install paper-icon-theme
1

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