epson-printer-utility error loading shared libraries
Solution 1
Ubuntu 20.04 LTS no longer has Qt4 libraries on purpose. See this question, for instance. Your best bet is compiling from source, or setting up a virtual machine with an older Ubuntu version as the guest OS.
Or, if you're feeling adventurous, you can add this PPA, then install Qt4:
sudo apt-add-repository ppa:rock-core/qt4
sudo apt update
sudo apt install qt4-default
This removes qt5-default
from your system. Let's add it back:
sudo apt install qt5-default
Now you have both Qt4 and Qt5 libraries installed in your system in a fragile balance. The Qt4 libraries will be removed the next time you run sudo apt autoremove
to clean up installed packages. Let's prevent that from happening:
sudo apt install libodbc1 libqt4-dbus libqt4-declarative libqt4-designer libqt4-dev libqt4-dev-bin libqt4-help libqt4-network libqt4-opengl libqt4-opengl-dev libqt4-qt3support libqt4-script libqt4-scripttools libqt4-sql libqt4-sql-odbc libqt4-svg libqt4-test libqt4-xml libqt4-xmlpatterns libqtcore4 libqtdbus4 libqtgui4 qdbus qt4-linguist-tools qt4-qmake qtcore4-l10n
Solution 2
The following worked for me on Ubuntu 20.10 for epson-printer-utility_1.1.1-1lsb3.2_amd64.deb
Download the following bionic
packages:
http://mirrors.kernel.org/ubuntu/pool/universe/q/qt4-x11/libqtcore4_4.8.7+dfsg-7ubuntu1_amd64.deb
http://mirrors.kernel.org/ubuntu/pool/universe/q/qt4-x11/libqtgui4_4.8.7+dfsg-7ubuntu1_amd64.deb
Extract from them the following files:
libQtCore.so.4.8.7
libQtGui.so.4.8.7
Copy these two files to /usr/lib/x86_64-linux-gnu
. Assuming that folder with the files mentioned above is current folder in terminal:
sudo cp libQtCore.so.4.8.7 /usr/lib/x86_64-linux-gnu/
sudo cp libQtGui.so.4.8.7 /usr/lib/x86_64-linux-gnu/
Make appropriate symbolic links in /usr/lib/x86_64-linux-gnu
:
cd /usr/lib/x86_64-linux-gnu/
sudo ln -s libQtCore.so.4.8.7 libQtCore.so.4
sudo ln -s libQtGui.so.4.8.7 libQtGui.so.4
The above makes Epson Printer Utility up and running. But its functionality is... Well, it is disappointing. All the functions provided can be performed on the device itself.
N.B. The following message does not seem to harm the application.
Gtk-Message: Failed to load module "overlay-scrollbar"
It can be fixed by installation of overlay-scrollbar-gtk2
package:
sudo apt install overlay-scrollbar-gtk2
Solution 3
You can download the libqt4 packages for the previous release, extract them, and tell epson-printer-utility
to use them by setting LD_LIBRARY_PATH
. I made a script:
https://gist.github.com/derde/025a1cdbfadc3e56dc6a46093d922c32
#! /bin/bash
# Run epson-printer-utility from epson-printer-utility_1.0.2-1lsb3.2_amd64.deb
# using downloaded libqt4 libraries from previous Ubuntu version (not provided
# in Ubuntu 20.04 "focal fossa"
#
# This downloads the deb files and extracts them in a libs directory in the
# current directory, and then runs the utility
#
# Fix for:
# epson-printer-utility: error while loading shared libraries: libQtCore.so.4: cannot open shared object file: No such file or directory
DEBS='
http://mirrors.kernel.org/ubuntu/pool/universe/q/qt4-x11/libqtgui4_4.8.7+dfsg-7ubuntu3_amd64.deb
http://mirrors.kernel.org/ubuntu/pool/universe/q/qt4-x11/libqtcore4_4.8.7+dfsg-7ubuntu3_amd64.deb
'
cd `dirname $0`
mkdir -p libs
cd libs
echo "## `pwd`"
if ! [ -f data.tar.zx ] ; then
for DEB in $DEBS; do
FILE="${DEB/*\/}"
[ -f "$FILE" ] && continue
echo "## download $DEB"
wget $DEB
echo "## extract $FILE"
ar x $FILE
tar -xJf data.tar.xz
rm control.tar.xz data.tar.xz debian-binary
done
fi
echo "## run epson-printer-utility with `pwd`"
LD_LIBRARY_PATH=`pwd`/./usr/lib/x86_64-linux-gnu epson-printer-utility
Solution 4
I fixed this problem without using a PPA.
I downloaded three packages from bionic
repo:
libqtcore4_4.8.7+dfsg-7ubuntu1_amd64.deb
libqtgui4_4.8.7+dfsg-7ubuntu1_amd64.deb
libaudio2_1.9.4-6_amd64.deb
and extracted these files using Archive manager:
libQtCore.so.4
libQ4Core.so.4.8.7
libQtGui.so.4
libQtGui.so.4.8.7
libaudio.so.2
then copied all 5 files to /usr/lib/x86_64-linux-gnu
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Comments
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nomorewin over 1 year
When trying to run the printer utility I downloaded from Epson website I get the following error:
epson-printer-utility: error while loading shared libraries: libQtCore.so.4: cannot open shared object file: No such file or directory
I presume this is because the QT4 libraries aren't installed on Ubuntu 20.04 LTS. And it seems no longer available to install.
I have googled and tried installing various QT4 libraries by various means without success. For example:
$ sudo apt-get install qt4-default Reading package lists... Done Building dependency tree Reading state information... Done Package qt4-default is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'qt4-default' has no installation candidate
Help please.
I'm new to linux so be kind and very specific with what I need to do!
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nomorewin almost 4 yearsThanks for this. One step forward. But another error now... epson-printer-utility: error while loading shared libraries: libaudio.so.2: cannot open shared object file: No such file or directory
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user6031769 almost 4 yearsSee if you can get another copy of
epson-printer-utility_1.0.2-1lsb3.2_amd64.deb
I got one from here ... download.ebz.epson.net/dsc/search/01/search/searchModule It does not link tolibaudio.so.2
, as shown byldd /opt/epson-printer-utility/bin/epson-printer-utility
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ppom over 3 yearsI don't have enough reputation to answer to @user6031769, so I'll answer here.
libaudio.so.2
is required by thelibs/usr/lib/x86_64-linux-gnu/libQtGui.so.4
dowloaded by the script. I could not find answer on where to find this shared library with a quick search on the internet. -
Zanna over 3 years@ppom thanks for the useful comment! You can ask a new question about this if you don't get a response here - just add a link to this post in your question.
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nomorewin over 3 yearsI had to extract and copy libaudio.so.2.4 too. But on running the epson utility I get:epson-printer-utility: error while loading shared libraries: libaudio.so.2: wrong ELF class: ELFCLASS32 Any idea how to fix that please?
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nomorewin over 3 yearsActually the ELF class error was probably because I downloaded that archive for Ubuntu 20.04. I found libaudio2_1.9.4-6_amd64.deb for 18.04 and now I get another error: Failed to load module "canberra-gtk-module" At this rate I'm going to go back to using Windows 10. Help please!
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Pilot6 over 3 yearsYou need to download all packages for 18.04.
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minmax almost 3 yearsTo solve this problem I only had to install libqtcore4 and libqtgui4 using sudo apt install libqtcore4 libqtgui4
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Geppettvs D'Constanzo over 2 yearsThis is the only solution which worked for an Epson Eco-Tank L1110 in order to properly run the epson-printer-utility. Thank you
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wyphan over 2 years@GeppettvsD'Constanzo I have an EcoTank ET-2720 myself. Glad to help!
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tstanisl over 2 yearsworked for old Epson L355
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apolinux about 2 yearsthis solution worked for me, but I also had to download libaudio package from archive.ubuntu.com/ubuntu/pool/main/n/nas/… and repeat the copy libaudio process to the same dir. By the way, I'm on ubuntu 21.10.