qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
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@CuriousPan said in qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.:
Features used by QPA backends: ... xkbcommon .............................. no X11 specific: XLib ................................. yes XCB Xlib ............................. no EGL on X11 ........................... yes xkbcommon-x11 ........................ no ... QPA backends: ... XCB: Using system-provided xcb-xinput ..... no GL integrations: GLX Plugin ......................... no XCB GLX .......................... no EGL-X11 Plugin ..................... yesYou need "yes" on all of these. "no" means you were missing the dependencies.
You should:
- Clean out your build tree (i.e. delete all files that were not part of the original source code)
- Install all the dependencies for Ubuntu at https://wiki.qt.io/Building_Qt_5_from_Git (pay particular attention to the "Libxcb" section)
- Run
configureagain. Make sure you get "yes" on all of the above. - Run
maketo build Qt.
You should now have all the XCB-related libraries.
@JKSH, thank you for response. I will try mentioned steps. But is it relevant for Qt6 too?
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@JKSH, thank you for response. I will try mentioned steps. But is it relevant for Qt6 too?
@CuriousPan said in qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.:
@JKSH, thank you for response. I will try mentioned steps. But is it relevant for Qt6 too?
You're welcome.
Yes, I believe the XCB requirements for Qt 5 and Qt 6 are very similar (or even identical)
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@CuriousPan said in qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.:
@JKSH, thank you for response. I will try mentioned steps. But is it relevant for Qt6 too?
You're welcome.
Yes, I believe the XCB requirements for Qt 5 and Qt 6 are very similar (or even identical)
@JKSH, thank you for your help. Your advice solved my problems. Steps from the link installed dependencies properly and now everything runs perfectly.
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Dears,
Could you please help? I'm trying to open turtlesim on my Unbutu 20.04 that I installed on my windows10 computer from the Microsoft store and that is what I'm gettingrosrun turtlesim turtlesim_node
qt.qpa.xcb: could not connect to display
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb.
Aborted (core dumped)
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Dears,
Could you please help? I'm trying to open turtlesim on my Unbutu 20.04 that I installed on my windows10 computer from the Microsoft store and that is what I'm gettingrosrun turtlesim turtlesim_node
qt.qpa.xcb: could not connect to display
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb.
Aborted (core dumped)
@Zayn said in qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.:
Unbutu 20.04 that I installed on my windows10 computer from the Microsoft store
The Windows Subsystem for Linux does not support GUIs. So you cannot run any apps that need XCB.
You have 2 options:
- Install a full Ubuntu desktop instead, either on a physical machine or a virtual machine.
- Wait until WSLg is released to the general public: https://devblogs.microsoft.com/commandline/the-initial-preview-of-gui-app-support-is-now-available-for-the-windows-subsystem-for-linux-2/
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@Zayn said in qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.:
Unbutu 20.04 that I installed on my windows10 computer from the Microsoft store
The Windows Subsystem for Linux does not support GUIs. So you cannot run any apps that need XCB.
You have 2 options:
- Install a full Ubuntu desktop instead, either on a physical machine or a virtual machine.
- Wait until WSLg is released to the general public: https://devblogs.microsoft.com/commandline/the-initial-preview-of-gui-app-support-is-now-available-for-the-windows-subsystem-for-linux-2/
@JKSH Many thanks
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Dears,
Could you please help? I'm trying to open turtlesim on my Unbutu 20.04 that I installed on my windows10 computer from the Microsoft store and that is what I'm gettingrosrun turtlesim turtlesim_node
qt.qpa.xcb: could not connect to display
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb.
Aborted (core dumped)
@Zayn
I had the same problem running p4merge on WSL2First, what you have to do is to install an xserver on windows, like VcXSrv.
Then create a shortcut for the xserver (optional)"C:\Program Files\VcXsrv\vcxsrv.exe" :0 -ac -terminate -lesspointer -multiwindow -clipboard -wgl -dpi autoThen in Ubuntu set the xserver display in ~/.bashrc
export DISPLAY=$(ip route | awk '{print $3; exit}'):0 export LIBGL_ALWAYS_INDIRECT=1 export XCURSOR_SIZE=16Then install the xcb dependency (found at https://wiki.qt.io/Building_Qt_5_from_Git )
sudo apt-get install '^libxcb.*-dev' libx11-xcb-dev libglu1-mesa-dev libxrender-dev libxi-dev libxkbcommon-dev libxkbcommon-x11-devMaybe from the last not everything is really needed, but after that it worked for me.
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G gaoyiqin95 referenced this topic on
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@Zayn
I had the same problem running p4merge on WSL2First, what you have to do is to install an xserver on windows, like VcXSrv.
Then create a shortcut for the xserver (optional)"C:\Program Files\VcXsrv\vcxsrv.exe" :0 -ac -terminate -lesspointer -multiwindow -clipboard -wgl -dpi autoThen in Ubuntu set the xserver display in ~/.bashrc
export DISPLAY=$(ip route | awk '{print $3; exit}'):0 export LIBGL_ALWAYS_INDIRECT=1 export XCURSOR_SIZE=16Then install the xcb dependency (found at https://wiki.qt.io/Building_Qt_5_from_Git )
sudo apt-get install '^libxcb.*-dev' libx11-xcb-dev libglu1-mesa-dev libxrender-dev libxi-dev libxkbcommon-dev libxkbcommon-x11-devMaybe from the last not everything is really needed, but after that it worked for me.
@corebonts Thanks ! That's solves the issue
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@corebonts Thanks ! That's solves the issue
@homer9 said in qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.:
@corebonts Thanks ! That's solves the issue
The workaround posted by @corebonts should no longer be needed. WSL2 now supports GUIs out-of-the-box: https://learn.microsoft.com/en-us/windows/wsl/tutorials/gui-apps
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@corebonts thx for your solution, solved for me now
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C CPPUIX referenced this topic on
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@Zayn
I had the same problem running p4merge on WSL2First, what you have to do is to install an xserver on windows, like VcXSrv.
Then create a shortcut for the xserver (optional)"C:\Program Files\VcXsrv\vcxsrv.exe" :0 -ac -terminate -lesspointer -multiwindow -clipboard -wgl -dpi autoThen in Ubuntu set the xserver display in ~/.bashrc
export DISPLAY=$(ip route | awk '{print $3; exit}'):0 export LIBGL_ALWAYS_INDIRECT=1 export XCURSOR_SIZE=16Then install the xcb dependency (found at https://wiki.qt.io/Building_Qt_5_from_Git )
sudo apt-get install '^libxcb.*-dev' libx11-xcb-dev libglu1-mesa-dev libxrender-dev libxi-dev libxkbcommon-dev libxkbcommon-x11-devMaybe from the last not everything is really needed, but after that it worked for me.
@corebonts Thanks a lot brother it worked for me.
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Thanks corebonts the solution to install '^libxcb' worked for me my application is running smoothly in ubuntu
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M Massi referenced this topic on
