19
votes
Gtk-Message: Failed to load module "overlay-scrollbar" Ubuntu 17.10
In my computer with Ubuntu 16.04, I solved it installing the package overlay-scrollbar-gtk2:
sudo apt-get install --reinstall overlay-scrollbar-gtk2
10
votes
Accepted
QtCreator not recognizing linked libraries after upgrading Ubuntu to 20.04
Same issue here, same solution as @nou. QtCreator 4.11 still relies on clang-8, but on Ubuntu 20.04 apt will install clang-10. The following solved the problem for me:
Install clang 8
sudo apt ...
9
votes
Accepted
Cant find Qt5Designer, qt5svg and qt5x11extras
To anyone else having the issue with qttools5-dev-tools not installing Qt Designer stuff try
sudo apt install qttools5-dev
instead (note there is no -tools at the end).
I was also lacking qt5svg ...
6
votes
Accepted
Qt Creator not working with VirtualBox 3D Acceleration
disable 3d acceleration from virtualbox settings and boot the system
In Qt Creator, go to Help → About Plugins…
Uncheck Qt Creator –> Welcome
exit Qt Creator, shutdown system and enable 3d ...
6
votes
QtCreator not recognizing linked libraries after upgrading Ubuntu to 20.04
I am not 100% sure that this is same problem but I solved it by installing clang-8 package. I think problem is that qtcreator code model plugin use libclang1-8 but clang-10 get installed by default.
5
votes
Accepted
Qtcreator hangs and crashes
I've had the same issue, 3.5.1 is super buggy. I fixed the problem by getting 4.2.1 from the Qt Online Installer.
5
votes
Accepted
PyQT Creator Qt designer: No such file or directory
Thanks to @dessert for helping me out.
I ran sudo apt-get install qt5-default and everything worked fine.
The answer was "inspired" from the answer here, which didn't work for me, but might work ...
4
votes
Accepted
Where (directory) to install Qt?
It should be available for all users, not me.
... answers your question. I would go for /opt/ purely so you separate it from your main system. Even though it might not 100% completely match the /opt/ ...
4
votes
Install 20.04 system libraries in 21.10
Upgrading a single app out of band is never a good idea, especially regarding glibc.
For build tools the best way to deal with that issue is to use a Docker container.
Downgrading is an option but ...
3
votes
Force OpenGL software rendering for specific programs
$ LIBGL_ALWAYS_SOFTWARE=1 ./the_program_name
or
$ QT_XCB_FORCE_SOFTWARE_OPENGL=1 ./the_program_name
3
votes
Where (directory) to install Qt?
Qt is already installed on Ubuntu. If you want to develop Qt5 applications with QtCreator, then simply install the qtcreator package.
If you do need to install a newer version, then the installer ...
3
votes
Ubuntu 14.04 QtCreator Qt5 examples missing
In Ubuntu 18.04 the QtCreator examples and API docs missing,
This is my way to solve this problem, should apply to almost every Ubuntu release.
For QtCreator and Examples and API Docs:
sudo apt ...
3
votes
Debug Qt application on ubuntu with root permission using qt creator
I would run the program from a terminal with a GDB server (as root) and then connect to the server with gdb from QtCreator. You would start gdbserver with something like this:
$ sudo gdbserver host:...
3
votes
How can i uninstall QtCreator 2.6.1 from 12.04?
I installed QtCreator from the default .run file distributed from the website.
QtCreator is located on ~/Qt/ directory.
You'll see the MaintenanceTool executable there,
you have to run that on ...
3
votes
Error connecting Qt Creator to Raspberry Pi using ssh
This is not a bug in Buildroot. On your server, you need to edit /etc/ssh/sshd_config and add this line :
Ciphers +aes128-cbc
Then restart the ssh daemon or reboot your RPi. See man sshd_config. ...
3
votes
Accepted
OpenCV imread() problem
This comment provided the correct solution:
So - what happens, exactly? My guess is that your filepath is invalid
(it needs to be "/home/ali/opencv/lena.png" - note the leading /)
– steeldriver ...
3
votes
Gtk-Message: Failed to load module "overlay-scrollbar" Ubuntu 17.10
You have three options here:
Ignore the warnings
Remove overlay-scrollbar stuff
#Step 1
echo "export GTK_OVERLAY_SCROLLING=0" >> ~/.profile
#Step 2
mkdir -p ~/.config/gtk-3.0
cat <<EOF &...
3
votes
Accepted
How do I discover my current system encoding?
Apparently it's only a font problem with the remote website and has nothing to do with the locale configuration on your system.
Additionally, the browser has its own locale settings and the locale ...
3
votes
Install 20.04 system libraries in 21.10
Targeting at interim release is impractical.
To ease workflow you have to use Long Term Support version on both development and client machines.
At present time the latest is LTS is 20.04 LTS, as you ...
2
votes
How build against qt 5.3.1?
Sometimes, it is hard to track build dependencies using cmake/make build errors. Better to install all build dependency used by release package using:
sudo apt-get build-dep qtcreator
This will save ...
2
votes
Accepted
QT Creator missing help files?
Install some possibly required gstreamer-plugins using this command:
sudo apt-get install libgstreamer-plugins-base0.10-0
2
votes
Where is the Qt Maintenance Tool?
I found the maintenance tool binary for my installation at /opt/Qt5.7.0/MaintenanceTool on Ubuntu 14.04.
I found it by using the locate tool:
sudo apt-get install mlocate
sudo updatedb
locate -i ...
2
votes
Ubuntu 14.04 QtCreator Qt5 examples missing
I'm on Ubuntu 20.04 and also suffering this "examples not showing" issue. Also, when opening an existing qt-based project, it complains "kits is not OK to use".
And if I do sudo ...
2
votes
Accepted
Ubuntu SDK and Qt Creator on same machine
Yes, it can, I also use both Ubuntu SDK and QtCreator, with no problem whatsoever.
2
votes
Accepted
Qt5 - how to use Free? Asking for money
To get it for free select the following options at the various steps:
Step 1: select In house development or Select opensource
Step 2: distribute :select No
Step 3: able to comply withe the licenses :...
2
votes
unable to open QtCreator
This is just a platform theme, simply delete the file /opt/Qt5.8.0/Tools/QtCreator/lib/Qt/plugins/platformthemes/libqgtk3.so and it should start.
You will have to tackle another problem regarding "/...
2
votes
Accepted
Font size in Qt Creator is too small
openjdk-9-jdk has been replaced by openjdk-11-jdk in Ubuntu 18.04. To install it open the terminal and type:
sudo apt update
sudo apt upgrade
sudo apt install openjdk-11-jdk
I don't expect ...
2
votes
Accepted
No examples are shown in Welcome screen of qtcreator
It's possible you have installed Qt Creator but not the Qt5 development libraries. Try installing the development libraries with:
sudo apt install qt5-default
Then try launching Qt Creator and see ...
2
votes
No examples are shown in Welcome screen of qtcreator
This may be an issue caused by not recognized qmake, i.e. QtVersion in Menu->Settings->Kits->Kits->QtVersion, showing None.
Manually choosing it to /usr/bin/qmake and will get correct qt ...
2
votes
Where is .deb file created after running the command sudo make install in qt 4.8 installation process in Ubuntu?
It's not necessary to compile Qt4 from source because Qt 4.8 is provided by the qt4-default package in all currently supported versions of Ubuntu. To install it open the terminal and type:
sudo apt ...
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