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I am having some issues with Packet Tracer 7 on Ubuntu 18.04: when I launch it with ./PacketTracer7 within the /opt/pt/bin directory, it opens but close immediately with a lot of:

"Warning: libpng warning: iCCP: known incorrect sRGB profile"

error msgs on the console.

The thing is, I installed PacketTracer7 on Ubuntu 16.04 and I remember that I had that issue with the libqt5multimedia.so.5 dependency, but I was able to find the solution (thanks to askubuntu and google) by installing the dependencies. So, everything perfect with 16.04.

But I'm a bit lost now. I can't realize where the issue come from, because I know the qt5 libs are installed on the system.

This is what I see when I run dpkg --get-selections:

libqt4-xmlpatterns:amd64            install

libqt5concurrent5:amd64             install

libqt5core5a:amd64              install

libqt5dbus5:amd64               install

libqt5gui5:amd64                install

libqt5multimedia5:amd64             install

libqt5multimediaquick-p5:amd64          install

libqt5multimediawidgets5:amd64          install

libqt5network5:amd64                install

libqt5opengl5:amd64             install

libqt5opengl5-dev:amd64             install

libqt5positioning5:amd64            install

libqt5printsupport5:amd64           install

libqt5qml5:amd64                install

libqt5quick5:amd64              install

libqt5quickparticles5:amd64         install

libqt5quicktest5:amd64              install

libqt5quickwidgets5:amd64           install

libqt5script5:amd64             install

libqt5scripttools5:amd64            install

libqt5sensors5:amd64                install

libqt5sql5:amd64                install

libqt5sql5-sqlite:amd64             install

libqt5svg5:amd64                install

libqt5test5:amd64               install

libqt5webchannel5:amd64             install

libqt5webkit5:amd64             install

libqt5webkit5-dev:amd64             install

libqt5widgets5:amd64                install

libqt5x11extras5:amd64              install

libqt5xml5:amd64    

I've tried to uninstall pt and the qt5 libs and install everything again, but nothing... the same issue.

Did anybody install PacketTracer7 on Ubuntu 18.04?

I would be very happy to have your help for doing it!

Thanks and forgive me for my poor english :)

These are the steps that worked for me in order to make Packet Tracer work in Ubuntu 18.04:

1. 
   

   Install the Qt libraries with apt-get:

   
   
   

   sudo apt-get install libqt5webkit5 libqt5multimediawidgets5 libqt5svg5 libqt5script5 libqt5scripttools5 libqt5sql5
   
   

   
   


2. 
   

   Install libcu52:

   
   
   

   wget http://mirrors.kernel.org/ubuntu/pool/main/i/icu/libicu52_52.1-3ubuntu0.8_amd64.deb
   
   sudo dpkg -i libicu52_52.1-3ubuntu0.8_amd64.deb
   
   

   
   


3. 
   

   Install libpng12¹:

   
   
   

   wget http://ftp.debian.org/debian/pool/main/libp/libpng/libpng12-0_1.2.50-2+deb8u3_amd64.deb
   
   sudo dpkg -i libpng12-0_1.2.50-2+deb8u3_amd64.deb
   
   

   
   

Now you can start Packet Tracer with the packettracer command.

¹ Thank you, gitgudgithub, for pointing that out.

I was in the same boat. After Googling three days I figure out that a lot of libraries are missing or not available in correct path.

Following libraries are not installed in correct path

libQt5WebKitWidgets.so.5, libQt5WebKit.so.5, libQt5Multimedia.so.5, libQt5PrintSupport.so.5, libQt5Svg.so.5, libQt5Widgets.so.5, libQt5Gui.so.5, libQt5Network.so.5, libQt5Xml.so.5, libQt5Script.so.5, libQt5ScriptTools.so.5, libQt5core.so.5

Following libraries have been replaced with updated version in Ubuntu

libicui18n.so.52 and libicuuc.so.52

Following library is missing

libpng12.so.0

The correct way to install and fix this issue is following

access root shell prompt and install packet tracer normally

$sudo /bin/bash

#./install

view image for screenshot

run following command

#chmod +x set_ptenv.sh

#chmod +x set_qtenv.sh

#./ set_ptenv.sh

#./ set_qtenv.sh

#cp /opt/pt/lib/libQt5* /usr/lib/x86_64-linux-gnu

#wget http://launchpadlibrarian.net/341176988/libicu52_52.1-3ubuntu0.7_amd64.deb

#dpkg –i libicu52_52.1-3ubuntu0.7_amd64.deb

# updated

#cp /etc/apt/sources.list /etc/apt/sources.list.bak

#echo “deb http://mirrors.kernel.org/ubuntu/ xenial main” >> /etc/apt/sources.list

#apt-get update

#apt-get install libpng12-0

view image for screenshot

After system restart run packet tracer with packettracer command

view image for screenshot

Source
https://www.computernetworkingnotes.com/ccna-study-guide/how-to-install-and-start-packet-tracer-in-ubuntu.html

I think you have installed all the needed libraries for Packet Tracer.

Now do the following, that may fix your problem:

1. sudo mkdir /opt/pt/libwebkit


2. sudo cp /opt/pt/lib/libQt5WebKit.so* /opt/pt/libwebkit


3. Then start Packet Tracer with: sudo LD_LIBRARY_PATH=/opt/pt/libwebkit/ /opt/pt/bin/PacketTracer7
   

It should give you some error messages that some libraries are not found. I had to install libpng12 and libqt5sql5.

libpng12 here: https://packages.debian.org/de/jessie/amd64/libpng12-0/download

libqt5sql5 with apt: sudo apt install libqt5sql5

After that run PacketTracer in /opt/pt/bin, it will crash and give you an error. Then just run packettracer in a terminal, it should work now.

Hopefully this will help you run Packet Tracer 7 in Ubuntu 18.04 :)

In addition to installing the libQT and libPNG12 packages missing, I did these steps to fix the segfault error.
The best way to get libPNG12 is to use the software sources app and add
"deb http://security.ubuntu.com/ubuntu xenial-security main"
as an additional repository, then use Apt to install it.
Adding the repo will keep that version secure instead of just downloading and installing a Deb file manually.
I also noticed some files weren't extracting due to a permission error. The extraction must happen with sudo privileges.
Create a folder for the packet tracer .tar.gz file downloaded
Put the .tar.gz file in the folder
Open terminal in that folder
sudo tar -xvf Packet Tracer 7.2.1.tar.gz
sudo ./install