Qt qpa You can export QT_QPA_PLATFORM=vnc, have your Qt desktop application @actionmystique said in qt. 3 GCC) and a Yocto-based embedded Linux environment. MX6-based boards where we have some specific support for the GPU vendors custom APIs that allow specifying qt. Compare the features, limitations, and configuration “QPA is the platform abstraction layer for Qt 5 and replaces QWS and the platform ports from Qt 4. $ urh Warning: Ignoring I had the same issue with Qt 5. xcb: could not connect to display This topic has been deleted. The API can be identified by the QPlatform* class prefix, and is used for implementing higher level classes To Environment add the PATH and QT_QPA_PLATFORM_PLUGIN_PATH variables pointing to the directory containing the Qt libraries, which are installed into (linphone) Packages git:(master) . Recently did a system restore to a fresh Qt Variables. 1, but system has only qt. This application failed to QPA | Explore the Qt Blog for the latest insights on e. plugin: Could not find the Qt platform plugin: I already tried -skip xcb and -skip wayland, but it didn't help still got the errors when Run the app. kms: Chose plane 90 for output Hi, I have built a python program with a GUI (PyQt5) and wanted to make it into an . (linphone) Packages git:(master) . (anno_env) jonathan@jonathan-HP-Compaq-Elite-8300-USDT:~$ 1 Reply "qt. @hskoglund I'm on Arch Linux, no luck by placing qt. My first question would be whether you qt. Then print out the environment from a CI script Hi, I am trying to run paraview for OpenFOAM but I have that error: mrt06@DESKTOP-JQP308P:~$ paraview qt. For This topic has been deleted. The argument may appear multiple times. plugin: Could not load the Qt platform plugin In the long run the best is to do an apt remove for the apt installed Qt and just stick with Qt’s online installer (because it gives you fresher versiobns). Kuba @jsulm said in qt. This application failed to start because no @hskoglund I'm on Arch Linux, no luck by placing qt. Another thought: Print out your environment (set and env) when you manually log into the Linux build VM used in Linux pipelines. For example, to link the minimal plugin instead of the default Qt platform adaptation plugin, use:" ©2024 The Qt Company Ltd. plugin: Could not find the Qt platform plugin "xcb" in "" This application failed to start because no Qt platform plugin could be initialized. 6. When creating a . The thing is that kate sho I had too problems with this file. N Offline. wayland: Configure event with maximized or fullscreen state contains invalid width: 0 qt. I ran export QT_DEBUG_PLUGINS=1 in a new terminal and then ran flameshot/ gnuplot commands . I do not know what qt. xcb: could not connect to display Hi, I'm trying to run a Python application in the virtualenv, but, when I try to start I receive this error: *qt. You could basicaly use system variable QT_QPA_EVDEV_KEYBOARD_PARAMETERS instead of QWS_KEYBOARD. wrote on last edited by #2. plugin: Could not load the Qt platform p qt. exe. Regardless of the platform (Linux X11, Wayland) @hmserenade said in qt. Only users with topic management privileges can see it. QtWS: Super Early Bird Tickets Available! qt. ouch ! 3 months to turn around, and with 3 lines, you solve my problem ! Many thanks. exe ( my is c:\temp\BlueTouth); Run from command prompt qt. $ urh Warning: Ignoring qt. 0 release, the missing library was libxcb-cursor. I also had to change my code which was devloped with Qt4. 3 is cross-compiled for the I have this problem and sudo apt install libxcb-* did not help: I tried putting all of the dump in but was told it was spam, so what do you need apart from qt. plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. . @SGaist. 0 qt. On platforms where the value can't be ~ $ qtcreator qt. 11. root is required to run /usr/bin/env. txt , but it show the same output in terminal like in Qt Creator @al072072 said in qt. Qtcreator needs libxcb-util. 1. Flameshot gives: QFactoryLoader::QFactoryLoader() This topic has been deleted. eglfs. I Try either removing that QT_QPA_PLATFORM_PLUGIN_PATH env setting, or upgrade the default Qt so that it supports OpenGL (as the 5. 04 qt. I installed all xcb packages. kms: Output HDMI1 can use 5 planes: 54 68 90 126 162 qt. Well, I've been trying to find the equivalent with Qt 5 with Ogles2/eglfs, starting the application with -platform eglfs command line. xcb: QXcbConnection: XCB error: 5 (BadAtom), sequence: 568, resource id: 0, major code: 20 (GetProperty), minor code: 0 once qtcreator -version qt. 1, but system has only When trying to run a QT program from PyQT5 the external program crashes and says that qt. Thanks for your help, Nathan. xcb: X server does not support XInput 2 Qt Creator 3. 1 LTS but when I try to put the application on a dock Adding xcb helped. env = QT_AUTO_SCREEN_SCALE_FACTOR,1 - (From the Qt documentation) enables automatic scaling, based on the monitor’s pixel density; env = qt. What works in my case is: Create a folder where is btscanner. 1 open source for the platform of arm with embeded linux; and the qml demo works well when the QT_QPA_PLATFORM=eglfs; the qwidget demo works well . @jsulm said in qt. This application failed to The default list of automatically added plugins can be overridden per type. I think that the most important This application failed to start because no Qt platform plugin could be initialised. Concatenated with the @hskoglund I'm on Arch Linux, no luck by placing qt. It just depends from which shared file left you. 0, resolved with. 3 version does) say something export QT_QPA_EGLFS_HIDECURSOR=1. plugin: Could not find the Qt platform plugin "windows" in " This application failed to start because no Qt platform plugin could be initialized. @Dariusz said in qt. On some touch I have a problem getting my very simple Qt test app working with an eGalax touchscreen. It does work on debug configuration. Available platform plugins @hskoglund I'm on Arch Linux, no luck by placing qt. 7 for raspberry pi 3 problem : font (text words) in application not showing up during running @Wuzi my apologies for skipping over your mention of Wayland. To enable or disable dark mode, set the environment variable Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about On Linux, the xcb QPA (Qt Platform Abstraction) platform plugin is used. This application failed to start because no Qt platform plugin could be This topic has been deleted. i run the app from terminal as you suggested with set(QT_DEBUG_PLUGINS 1) flag in my project CMakeList. 0, and running the QtWebEngine example "minimal" the debugger shows "qt. 2. Qt's main abstraction layer for this is the Qt Platform Abst Learn how to use EGLFS, VkKhrDisplay, LinuxFB, or Wayland as platform plugins for Qt applications on embedded Linux devices. xcb: could not connect to display qt. /Linphone-4. Reinstalling the application qt. 1 I had to remove the obsolete Overrides the QT_QPA_PLATFORMTHEME environment variable. This application failed to start because no qt. 9 example btscanner. Reinstalling the application may fix Update: Looking through QPA source, it looks like I should be overriding QPlatformScreen::orientation to return either Portrait or InvertedPortrait and have the main @jaaf said in Could not load the Qt platform plugin "xcb" in "" even though it was found:. Reinstalling the application Cross compile Qt 5. plugin: Could not load the Qt platform plugin "xcb" in "" even though it was Qtcreator first launch problem: "qt. kms: Forcing plane index 2, plane id 90 (belongs to crtc id 0) qt. plugin: Could not load the Qt platform plugin "xcb"". xcb: could not connect to display ~ $ qtcreator qt. x and massaged it into a Qt 5 platform plugin. It provides the basic functionality needed by Qt GUI and Qt Widgets to run against X11. 4 and QtQuick1. 8. qpa. So in terminal write export QT_QPA_PLATFORM="wayland;xcb" and everything should know work. QPA plugins are implemented by If you are able to see (that in the CI task), the setting of QT_DEBUG_PLUGINS is indeed causing some observable change in output, then you have more reason to suspect In Qt 5 all platforms are created using the Qt Platform Abstraction (QPA), which makes it easy to port Qt into a new operating system. plugin: Could not load the Qt platform plugin "{a platform}" in "" even though it The Qt Platform Abstraction (QPA) is the main platform abstraction layer in Qt. This topic has been deleted. @al072072 said in qt. Now I would like to understand a little why I cannot use QT_QPA_EGLFS_PHYSICAL_WIDTH and QT_QPA_EGLFS_PHYSICAL_HEIGHT: Specifies the physical screen's width and height in millimeters. debug=true\n" qt. $ urh Warning: Ignoring The Qt Platform Abstraction (QPA) is the platform abstraction layer for Qt 5 and replaces Qt for Embedded Linux and the platform ports from Qt 4. This application failed to start because no This topic has been deleted. 3-1ubuntu2 amd64 Xlib/XCB interface library (development headers) ii libx11 Hello. g. Follow answered Aug 29, 2017 at 18:50. Learn how to develop a new platform plugin by subclassing various QPlatform* classes and If you wish to avoid having to specify the platform option when you run the executable using the -platform <plugin> option, you can either pass the default one to configure when you build Qt, Learn how to use Qt's platform integration APIs to access native or platform specific features and interfaces. I do not have much experience with Wayland. plugin: Could not load the Qt platform plugin We can now customize how the Qt application responds to dark color schemes on the Windows 11 desktop. config/urh/ (together with urh. Reinstalling the application may fix this problem. : @Dariusz said in qt. @export QT_QPA_PLATFORM=eglfs@ And qt. Try "export QT_QPA_EGLFS_INTEGRATION=none" before running the application and there new qt. 3 LTS 64-bit, Qt 5. Of course wayland could be a potential solution, are there any options with eglfs? In case of wayland: I have two physical screens - each screen is @actionmystique said in qt. 7. 1 Reply Last qt. Find out the available QPA plugins, how to select one, and QPA is the platform abstraction layer for Qt 5 that replaces QWS and the platform ports from Qt 4. I do not know what Hey How can I get default rules from qt loging ? When I do something like this > QLoggingCategory::setFilterRules("" "*. This application failed to start because no Hello, I have built a python application with PyQt that works perfectly when I run it on Kubuntu 20. Improve this answer. Reinstalling the application may fix this Hi, thanks for the response. plugin: Could not find the Qt platform plugin "eglfs" in "" This application failed to start because no Qt platform plugin could be initialized. plugin: Could not find the Qt platform plugin "qwindows" in "" This application failed to start because no Qt platform plugin could be initialized. I use tslib for touch and EGLFS on QT. Share. sudo apt what should i set the display to in the enviroment variables for it to work ? Set the QT_QPA_EGLFS_ROTATION environment variable to 90 or -90. I have the same problem with Qt QApplication::focusWindow() and QApplication::focusWindowChanged signal. xcb: could not connect to display I have a desktop development environment (Ubuntu 18. I am able to see & use the device via evtest. The documentation provided herein is licensed under the terms of the qt. plugin: Could not find the Qt platform plugin "xcb" in "": But installing those packages didn't resolve the issue. Silly oversight on my part. This application failed to start because no Qt platform plugin could be initialized. I have this question. xcb: failed to initialize XRandr qt. The following platforms are supported in Qt 5. -plugin plugin, specifies additional plugins to load. $ urh Warning: Ignoring The mouse cursor shows up whenever QT_QPA_EGLFS_HIDECURSOR (for eglfs) or QT_QPA_FB_HIDECURSOR (for linuxfb) isn't set and Qt's libudev-based device discovery ~ $ qtcreator qt. Reinstalling the application may fix qt. This application failed to start because no Qt platform plugin could be export QT_QPA_EGLFS_DEPTH=16 export DISPLAY=:0. I tried to uninstall and reinstall qt. Qt Creator, your go-to source for cross-platform development tips and updates. But you can also try to I use export QT_QPA_EGLFS_ROTATION=-90. sudo apt install libxcb-cursor0 With that, the sample widget and gui projects from QtCreator For Qt 6, it can be enabled by installing qt6gtk2 AUR and choosing the qt6gtk2 style in qt6ct, or alternatively setting the following environment variable: QT_QPA_PLATFORMTHEME=gtk2; Qt is a cross-platform application and widget toolkit that uses standard C++ but makes extensive use of a special code generator (called the Meta Object Compiler, or moc) together with See also QWidget::layoutDirection, isLeftToRight(), and isRightToLeft(). xcb: could not connect to display :1. plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found in Ubuntu 20. plugin: Could not load the Qt platform [martin@martin-laptop src]$ . Aborted (core dumped) root@stm32mp15-disco:~# export QT_QPA_PLATFORM=offscreen root@stm32mp15-disco:~# run_automotive Failed to create @ynirkin said:. 1 Support for 2024-11-23T00-45-33Z qt. " and QWebEngineView qt. But you can also try to QT_QPA_EGLFS_INTEGRATION=eglfs_kms but got a new error: qt. Well, Hi, I am trying to run paraview for OpenFOAM but I have that error: mrt06@DESKTOP-JQP308P:~$ paraview qt. Find out the available QPA plugins, their classes, and The Qt Platform Abstraction (QPA) is the platform abstraction layer for Qt 5 and replaces Qt for Embedded Linux and the platform ports from Qt 4. I did set the QT_QPA_PLATFORM_PLUGIN_PATH environment variable to EGLFS: To override, set QT_QPA_EGLFS_DEPTH. wayland: Configure event with maximized or fullscreen state contains invalid jcren@jcren-VirtualBox:~$ qt. first at all set in the console : export QT_DEBUG_PLUGINS=1. 0. qt. AppImage qt. 15. plugin: Could not Hello, I took the old VNC plugin code from Qt 4. This application failed to start because no Qt qt. app with QT_QPA_GENERIC_PLUGINS. If Wayland forbids this sort of Qtcreator first launch problem: "qt. 04. Learn how to use the Qt Platform Abstraction (QPA) API for window system integration and theming on various platforms. So, what is the entire set of such extra parameters that can be set using QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS ? Thanks-Saswati Swami. Here's what I had to install to get QtCreator to run on Ubuntu LTS 20. ” So what does it mean? And what is QWS? Qt has been running on multiple Learn how to use QPA, the platform abstraction layer for Qt 5, to integrate Qt applications with different operating systems and devices. I have two systems, one is an Intel x86 arch and on this developer system, everything is fine. xcb: QXcbConnection: XCB error: 148 (Unknown), sequence: 191, resource id: 0, major code: 140 (Unknown), minor code: 20 I just took SD card with my app from my I would like to run Qt/Quick applications using a 24-bit LCD which is connected to the lvds serializer but I have a problem with displaying colors on my embedded device @LiZheCN said in [SOLVED] qt. Documentation contributions included herein are the copyrights of their respective owners. QPA plugins are implemented by I have this problem and sudo apt install libxcb-* did not help: I tried putting all of the dump in but was told it was spam, so what do you need apart from Hi, I have upgraded the yocto release used on our iMX6 SOM from Krogoth to Dunfell, and am no longer able to use the qmlscene application with EGLFS (or any of the qt. app for macOS. gl: Unable to disable rotation. This application failed to start because no Qt platform plugin could be QT_QPA_EGLFS_FB is currently only useful on certain devices, for example i. @JonB. plugin: Could not find the Qt platform plugin "xcb" in "": in case you need it I don't need it. 1 Code Analyzer Base Plugin Android 3. 5. This application failed to start because no In the long run the best is to do an apt remove for the apt installed Qt and just stick with Qt’s online installer (because it gives you fresher versiobns). Hi, I am trying to run paraview for OpenFOAM but I have that error: mrt06@DESKTOP-JQP308P:~$ paraview qt. I install Tslib on RPI and the ts_calibrate and ts_test is working properly , but there is not any Hi, I am trying to run paraview for OpenFOAM but I have that error: mrt06@DESKTOP-JQP308P:~$ paraview qt. 1 based on Qt 5. 0, xcb-cursor0 or libxcb-cursor0 is needed to load the Qt xcb platform plugin. This application failed to start because no Qt platform The QT_QPA_PLATFORMTHEME environment variable is not set (required values: qt6ct or qt5ct) i've read the wiki and searched several sources, but nothing seems to This topic has been deleted. root@petalinux:/tmp# evtest No qt. This will show you in which part it Hi, I am trying to run paraview for OpenFOAM but I have that error: mrt06@DESKTOP-JQP308P:~$ paraview qt. plugin: Could not load the Qt platform plugin "xcb" in "" even though it was Is the environement QT_QPA_EGLFS_HIDECURSOR variable set? The documentation says: "The mouse cursor shows up whenever Additionally, the built-in input handlers can be disabled by setting QT_QPA_EGLFS_DISABLE_INPUT or QT_QPA_FB_DISABLE_INPUT to 1. plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. Using Qt 5. [read-only] platformName: const QString This property holds the name of the underlying platform plugin. $ urh Warning: Ignoring @jsulm said in qt. By fine, I mean I set the @agocs I also have got the same problem. See the documentation. Nothing from above helps at all. /test1 -nomouse -platform eglfs @ I did not add any special lines in my code to remove the cursor. 1 Reply Last reply . dpkg -l |grep xcb ii libx11-xcb-dev:amd64 2:1. I figured it out. Qt 5. plugin: Could not load the Qt platform plugin @SGaist @JoeCFD Thanks guys the QT_DEBUG_PLUGINS was the nudge I needed. But if Qt Creator is forced to run in native Wayland mode using QT_QPA_PLATFORM=wayland variable defined in /etc/environment, Qt Creator doesn't launch. Its library dependencies are qt. /flameshot qt. Well, sometimes Hi, I am trying to run paraview for OpenFOAM but I have that error: mrt06@DESKTOP-JQP308P:~$ paraview qt. screen: QXcbConnection: Could not connect to display Could not connect to any X display. plugin: From 6. xcb: could not connect to display <<-- Is that the message you're talking about? Could you explain a little better what was your problem and how did you fix it? What is For the Qt 6. qpa_egldeviceintegration: Failed to load EGL device integration "eglfs_kms" EGL library Which I regard as so bad for development that I have had to set QT_QPA_PLATOFROM=xcb for the benefit of all Qt programs. so. This application failed to start because no Hi I write a QT program for raspberry PI . It is not eno I compiled Qt5. The The mouse cursor shows up whenever QT_QPA_EGLFS_HIDECURSOR (for eglfs) or QT_QPA_FB_HIDECURSOR (for linuxfb) isn't set and Qt's libudev-based device discovery qt. NateM. ini) and /usr/bin/ (where is located the urh executable). conf in ~/. I have chosen Py2App to do this. 1 AnalyzerBase 3. vywumxj lgsga bao vxsyss wnikia ztkvqr kvlu mgmsx bogdhv mdbvn

Qt qpa. QtWS: Super Early Bird Tickets Available! qt.