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Questions tagged [qt5]

Qt 5 is the 5th major version of the popular GUI toolkit for implementing graphical applications. This version contains major changes, and Qt Quick is central to it.

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How the heck can I install Qt5 on Ubuntu 16.04 LTS?

I have loads of programs that require Qt4 and I need to install programs that require Qt5. When I try to install Qt5 things start off dodgy and then proceed to insanity. I request friendly guidance. ...
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24 views

Ubuntu 18.04 - move QT5 application to left or right

Most of the applications I use in Ubuntu 18.04 respond to super+Left Arrow or super+Right Arrow to place the window on the left or right side, as explained in Ubuntu 18.04 - move a window left-right ...
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1answer
24 views

QtLocation and QtPositioning not installed

I'm trying to develop a KDE widget that should display a map. At the moment I can't get the widget to load, because of the errors module "QtLocation" is not installed and module "QtPositioning" is not ...
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1answer
138 views

Can't launch Qt Creator in Ubuntu 18.04

My environment initially had qt4 and Qt Creator seemed to work fine back then. I installed qt5 and after that Qt Creator does not launch anymore. Qt Creator works fine in my virtual machine however. ...
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0answers
40 views

Is there qt5-widget-factory just like gtk3-widget-factory?

There is a very useful tool named gtk3-widget-factory in gtk3-devel package. Is there similar tool in Qt5 ?
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120 views

Minitube conflicts with phonon4qt5-backend-vlc

The version of Minitube included in Ubuntu 18.04.1 does not work anymore: Probably a protocol change, that happens often and the solution is probably to install the newest version: wget https://...
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1answer
81 views

Minimal Qt5 install to compile code

I wrote a little program in C++ using Qt. Back when it was Qt4, in order for my friends to compile my program on their Ubuntu system, I would tell them, after getting my source files, to just run: ...
2
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1answer
616 views

Qt 5.11.2 in Ubuntu 18.10?

Probably nobody can give me a definite answer, but does anybody if we are going to see qt5-default 5.11.2 in the official repositories of Ubuntu 18.10 at some point?
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0answers
28 views

How are Qt modules/classes distributed amongst Ubuntu packages?

For example, I know that I need the core dependency or the network one. In other words I have the following lines in qbs project file Depends { name: "Qt.core" } Depends { name: "Qt.network" } Now, ...
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1answer
95 views

Relocation error libqt5 and libpng16

I have recently upgraded from 16.04 to 18.04 While trying to start qjack I get this error qjackctl: relocation error: /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5: symbol png_set_option version PNG16_0 ...
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2answers
70 views

Qt5 installation default host unreachable

I got a really annoying error when I want to install Qt5 on Ubuntu 16.04 LTS Network error while downloading 'http://mirrors.ukfast.co.uk/sites/qt.io/online/qtsdkrepository/linux_x64/desktop/licenses/...
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0answers
37 views

Slicer3D Expension Manager shuts down on Ubuntu 18.04

I am trying to use Slicer3D on Ubuntu 18.04. It used to work fine until yesterday, before I installed the updates for Ubuntu. Now, every time I try to open the "Extension Manager", the program shuts ...
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3answers
209 views

Unable to install qt511-meta-full from PPA:beineri on Ubuntu 16.04: qt511doc package does not exist

After adding this PPA for Ubuntu Xenial (16.04) to install qt5.11: https://launchpad.net/~beineri/+archive/ubuntu/opt-qt-5.11.0-xenial and updating with apt-get, I encountered this issue while trying ...
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0answers
160 views

Launching a shared object executable on Ubuntu via double-click

I've built my application on Ubuntu using a static build of Qt in order to simplify deployment. I just noticed that if I double-click the executable, I get an error: Could not display "slate". ...
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0answers
28 views

Qt5 breaks when adding Qwebwidget

I am building a small interface in QtDesigner and when I add web widgets, my interface stops running. I get: File "interface.py", line 649, in <module> from PyQt5 import QtWebKitWidgets ...
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1answer
297 views

teamviewer 13 crashing on UBUNTU 16.04

I am getting the crash in Teamviewer 13 as follows now i have followed uninstalling the software ,removing the configuration files but it still doesn't works any idea would really help.I have also ...
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0answers
391 views

How to force a qt version to be installed

After the last qt update, I have a conflict between my qt versions. A part of the qt libraries come from ubuntu Xenial repo and the other part from neon Xenial repo. I cannot start kde anymore due to ...
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0answers
145 views

Qt Designer is buggy

I installed QT 5.11.0 on Ubuntu 17.10. I launched Qt Designer with ~/Qt/5.11.0/gcc_64/bin/designer. However, I cannot maximize the Designer window, I cannot drag and drop widgets, widgets change ...
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0answers
298 views

VirtualBox not starting: libQt5Core.so.5: cannot open shared object file: No such file or directory [duplicate]

This is a fresh install of Ubuntu 18.04 using default gnome desktop. When I try to launch VirtualBox it does not load. When I run it from the terminal I get an error message: VirtualBox: ...
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0answers
129 views

Is there axcontainer module for Ubuntu?

I have implemented a c++/qt project in windows. I used QAxContainer so I can read and write Excel files. This is how I configured my .pro file: QT += core gui axcontainer greaterThan(...
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1answer
7k views

Ubuntu 18.4 libQt5Core.so.5: cannot open shared object file: No such file or directory

I have Ubuntu 18.04. While launching virtual box I am getting an error $ virtualbox VirtualBox: supR3HardenedMainGetTrustedMain: dlopen("/usr/lib/virtualbox/VirtualBox.so",) failed: libQt5Core.so.5: ...
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2answers
695 views

Can't find what package to install to get a proper Qtmultmedia gstreamer backend

In a new shiny ubuntu 18.04, I am trying to use a python3/pyqt5 script that use QtMultimedia. It was working fine in 17.10. And now even after installing a bunch of package, I still can't get it to ...
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0answers
136 views

How can I change vlc tooltip font size?

When I mouse over the time bar in VLC, a tooltip is displayed indicating the hovered over video time. For me, this tooltip is very small, and hard to view unless moving closer to the screen. ...
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0answers
74 views

Qt5 fs-archiver does not work anymore since 17.10

I've already used Qt4/Qt5 fs-archiver with Xubuntu/Ubuntu 16. However, since i upgraded to 17.10 i always get the same error message when i start to make a whole disc image as backup. I use an ASUS TP ...
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0answers
1k views

Teigha Viewer for DWG files. How to install and make it work properly?

Teigha Viewer is a free (not libre) viewer for proprietary DWG files, developed by Open Design Alliance. The developing company provides RPM and DEB packages for easy installation at their site. I ...
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0answers
48 views

P4V keyboard letters messsed on Ubuntu 16.04 connected via tightvncserver

When I connect to my P4V (the newest version) on Ubuntu 16.04 using tight VNC (1.3.10-0ubuntu3 version) server I get the following error: XKEBYOARD extension not supported. Besides, I am unable to ...
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0answers
435 views

Vlc Does not start

so I am running into a lot of problems with vlc these days. I had removed qt5 to solve the trimming error but ended up destroying the Vlc build. now when I click vlc icon it doesn't do anything ...
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2answers
714 views

Libqt 5 based applications have big icons and fonts and scaling issues

Since I updated to QT 5 (Ubuntu 16.04), all applications (VLC, TexStudio, Texmaker ...) that use QT 5 have problems scaling, and every time I disconnect my laptop from the external screen , the incons ...
1
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1answer
172 views

Search fields respond slowly to input on Plasma KDE desktop

I'm on a upgraded version of Kubuntu, from 16.04 to 17.04 and then to 17.10. When trying to type something in krunner or in a search field of the application menu - the letters just don't appear as ...
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1answer
523 views

Install Qt5 on Virtualbox, get segmentation fault

I have virtualbox(5.2.2) created from ubuntu-16.04.3-desktop-amd64.iso, on Windows host. I downloaded qt-opensource-linux-x64-5.9.3.run, when I run it, get: # ./qt-opensource-linux-x64-5.6.3.run ...
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0answers
67 views

Any non-GUI way of installing a new theme for QT Apps like vbox or vlc while in an Gnome environment?

I'm using the Numix GTK theme in Gnome Shell and I've found it's analog for KDE / Qt here: https://codeload.github.com/numixproject/numix-kde-theme/zip/master I've downloaded the theme and I was ...
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1answer
215 views

E: Unable to correct problems, you have held broken packages while installing libgl1-mesa-dev for qt

I ran sudo apt install libgl1-mesa-dev and received the error message: The following packages have unmet dependencies: libgl1-mesa-dev : Depends: mesa-common-dev (= 11.2.0-1ubuntu2) but it is not ...
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1answer
239 views

fatal error: ui_about.h: No such file or directory

I am trying to compile the following github package https://github.com/openalpr/plate_tagger Which makes use of qt. The output of cmake is as follows, -- The C compiler identification is ...
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1answer
2k views

Where are Qt Charts and Qt Data Visualization located in Ubuntu repository

I'm trying to install Qt Charts and Qt Data Visualization modules from Ubuntu repository, but I cannot find them. Are they available in the repository? Ubuntu: Zesty (17.04) I get the following ...
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1answer
994 views

Qt5.9.1 QMYSQL driver won't load

I already tried to fix it but nothing works... Here is a list of what i already did (I am a total beginner in linux so i might have failed to execute the solutions...) I did compile the source with ...
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1answer
732 views

Ubuntu 16.04 OpenFOAM-v1706 ParaView Installation Error

I'm trying to build and install OpenFOAM-v1706+ from the source for Linux provided here. I'm following the build guide provided here, but I am having issues with an error that occurs when I try to ...
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0answers
102 views

Installing XFLR5 - v6.38 in ubuntu 14.4

I am trying to install XFLR5 in ubuntu. And to start with, I have installed every single package I could see in all the web posts which are necessary for QT, Mesa and Mesa-dev Im pretty sure I have ...
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1answer
618 views

Installing qt5 hangs when installing headless with xvfb-run via ssh connection using official .run installer

I have a problem with trying to install QT. I am following the instructions from http://splash.readthedocs.io/en/latest/install.html and from their source provision.sh I'm using these commands to try ...
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1answer
1k views

Ubuntu 16.04 OpenFOAM-5.0 makeParaView Qt5 Error

I'm trying to build and install fluid simulation software OpenFOAM from source. The first step is building all the third party software by running ./Allwmake in the $WM_THIRD_PARTY_DIR. I did this, ...
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2answers
3k views

cannot run Robo 3T QT app

I want to run Robo 3T app. When I start it from shortcut it just keeps loading without showing the window. But if I run the binary from console, it gives me this error This application failed to ...
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0answers
550 views

How to use Intel Hardware Assisted Virtualization on Ubuntu to emulate Android phones with Android Studio

I have been trying to install and use KVM on Ubuntu 16.04 for emulating Android phones which run the apps I build with Android Studio. For some reason launching the emulator on Ubuntu seems to be a ...
1
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1answer
2k views

fatal error: QtWidgets/QOpenGLWidget: No such file or directory

I met this problem when trying to install a package for Python3.6.1 from Pyenv. See the error message below: Obtaining file:///home/ml4468/roboschool Complete output from command python setup.py ...
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1answer
900 views

PyQt5 mysql driver not found

Under Ubuntu 17.04 I develop a Python 3 application using PyQt5 (which uses Qt5 5.8.0) and mysql (5.7.18). All has been well recently until today, I now get upon launching: QSqlDatabase: QMYSQL ...
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0answers
131 views

Qt5 widgets: twisted fonts on Zesty

I have a weird issue with fonts using Qt5 widgets on Ubuntu Zesty: some letters are randomly twisted, as shown in screenshot. I have already tried installing fonts (apt install fonts-*) and turning ...
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1answer
1k views

Cant install wireshark - failed to load xcb plugin

I have installed wireshark 2.2.6: $ sudo apt install -y wireshark Reading package lists... Done Building dependency tree Reading state information... Done wireshark is already the newest ...
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2answers
1k views

libqt5webengine5 for 16.04

I am trying to run an application which seems like to have libqt5webengine5 as a requirement. In the xenial repository I can only find libqt5webkit, but not libqt5webengine. Where can I find it, is ...
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2answers
3k views

Project ERROR: Unknown module(s) in QT: positioning

I have error Project ERROR: Unknown module(s) in QT: positioning when I'm trying to build QT5 dependent project with qmake, I suspect that problem can be in old QT4 installation that was installed ...
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0answers
2k views

How to fix Qt5 unmet dependencies

I'm running Ubuntu 16.10 with Qt4.8.7 and I'd like to install Qt5 in order to compile a package. I installed qt5-qmake from the repo, and set the default to qt5: export QT_SELECT=qt5 ./configure &...
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1answer
106 views

Texmaker Shortcuts not working on Ubuntu 16.10

Texmaker does not recognize shortcuts such as Ctrl+F for Find or Ctrl+O for Open. This was a known problem in previous Ubuntu releases, but the common solution for those versions does not work for ...
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0answers
727 views

Add Qt 5.7 libraries to Ubuntu 14.04

I would like to add Qt 5.7 libraries to my Ubuntu 14.04 installation, to run a program that is precompiled (and needs Qt libraries 5.5 or later). My system is text mode only (no runlevel 5) so I can'...