No longer starts on Linux from version 1.4.02

LightBurn Software Questions OS Specific
1

I have a current Xubuntu 22.04.3. The last Lightburn version that works on it is 1.4.01. From version 1.4.02 I get the error message below. It would be great if someone had an idea.
Bye Daniel

$ ./LightBurn
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: xcb.

Abgebrochen (Speicherabzug geschrieben)

Or more detailed with QT_DEBUG_PLUGINS=1

$ ./LightBurn
QFactoryLoader::QFactoryLoader() checking directory path “/home/laser/.local/share/LightBurn/plugins/platforms” …
QFactoryLoader::QFactoryLoader() looking at “/home/laser/.local/share/LightBurn/plugins/platforms/libqxcb.so”
Found metadata in lib /home/laser/.local/share/LightBurn/plugins/platforms/libqxcb.so, metadata=
{
“IID”: “org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3”,
“MetaData”: {
“Keys”: [
“xcb”
]
},
“archreq”: 0,
“className”: “QXcbIntegrationPlugin”,
“debug”: false,
“version”: 331520
}

Got keys from plugin meta data (“xcb”)
QFactoryLoader::QFactoryLoader() checking directory path “/home/laser/.local/share/LightBurn/platforms” …
Cannot load library /home/laser/.local/share/LightBurn/plugins/platforms/libqxcb.so: (libxcb-icccm.so.4: Kann die Shared-Object-Datei nicht öffnen: Datei oder Verzeichnis nicht gefunden)
QLibraryPrivate::loadPlugin failed on “/home/laser/.local/share/LightBurn/plugins/platforms/libqxcb.so” : “Cannot load library /home/laser/.local/share/LightBurn/plugins/platforms/libqxcb.so: (libxcb-icccm.so.4: Kann die Shared-Object-Datei nicht öffnen: Datei oder Verzeichnis nicht gefunden)”
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: xcb.

Abgebrochen (Speicherabzug geschrieben)

1 Like
2

How are you installing LightBurn? I assume you’re running the .run file?

What happens if you uncompress and run LightBurn from the .7z file?

3

I tried both .run and .7z and got the same error. Running export QT_DEBUG_PLUGINS=1 before running ./LightBurn from a terminal showed some more detailed error messages that revealed a not-found error loading libqxcb.so. That’s part of the libxcb-xinerama0 package so running the following command fetched the missing libraries and LightBurn started right up after that.

sudo apt-get install --reinstall libxcb-xinerama0
2 Likes
4

First make sure you have libxcb and all dependencies installed on your system with sudo apt install libxcb-* Then in the file ~/.profile add the following line:

QT_QPA_PLATFORM=xcb

And then from the terminal run source .profile and try to run ligthburn.

1 Like
5

Even with these tips it doesn’t work under Xubuntu 22.04. I’ve now switched to Debian 12, which works with apt install libxcb-*

6

Did you read this ?
https://forum.lightburnsoftware.com/t/lightburn-on-ubuntu-22-04-3-lts

7

No, I didn’t know this thread before, but I’ll stick with Debian now :wink:

8

Hello,
I have the same problems with Linux Mint and Lightburn1.4.03.
I can only start Lightburn with administrator rights.
I have to wait a few more days for a repair.
There is still work to be completed and I don’t want to take any chances.

Thank you very much, Uwe

9

Did you set the group permissions as specified in the documentation?

Installation & Setup - LightBurn Software Documentation

1 Like
10

sorry but that is not the same problem…

11

Moin,

ich habe die gleichen Fehlerbeschreibungen wie im ersten Beitrag.
Ältere Versionen von Lightburn haben funktioniert.
Als Notlösung funktioniert es bei mir das Programm mit Administrator rechten zu starten.
In einigen Tagen habe ich die Laserarbeit fertig und kann dann am Linux System
einige Versuche machen.

Good morning,

I have the same error descriptions as in the first post.
Older versions of Lightburn worked.
As an emergency solution, it works for me to start the program with administrator rights.
In a few days I will have finished the laser work and can then work on the Linux system
make some attempts.

12

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