Strange issue with QXcbIntegration: Cannot create platform OpenGL context, neither GLX or EGL are enabled

SGaist · wrote on 13 Aug 2021, 19:38

If you can log into your RPi locally with the graphical user interface working it should already be a good sign.

andy0206 · wrote on 13 Aug 2021, 20:00

Thanks. Yes, its all generally Good in terms of the display when logged in as pi user. As described, the issue only manifests when the application is launched locally from the pi user profile. Starting the application remotely or within Qt Creator is all Good. For now I have created a launch application script elevated with sudo and the application runs fine.

SGaist · wrote on 13 Aug 2021, 20:02

Can you run GLXGears ?

andy0206 · wrote on 14 Aug 2021, 09:01

Hi, Yes it glxgears works fine - low frame rate, but that's to be expected on a PiZero.

SGaist · wrote on 14 Aug 2021, 21:02

Without sudo ?

andy0206 · wrote on 15 Aug 2021, 12:20

Yes, sorry

SGaist · wrote on 15 Aug 2021, 19:32

@andy0206 said in Strange issue with QXcbIntegration: Cannot create platform OpenGL context, neither GLX or EGL are enabled:

EGL on X11

I wonder if your issue related to that.

Does running your application with sudo use X or the frame buffer directly ?

andy0206 · wrote on 16 Aug 2021, 07:23

Hi,

I’m not entirely sure how to check for that. The application is not doing anything special, just a QML app with some custom styled controls which has transparency. I am using QtCamera in the application though.

SGaist · 19 Aug 2021, 11:45

You would need a build with EGL on X11 enabled.

andy0206 · S SGaist 16 Aug 2021, 19:51

@SGaist Ok, thank you. I'll give it a go