Even if it's old, I would try with this version if Qt to see if you have the same issue going on.

It's not a problem of Qt Creator. The mkspec used for the RPI3 is still valid unless your sysroot comes from a Debian Stretch were they have changed the library name. You need to modify the mkspec under devices that matches the Rpi3

@ronpetit said in Qt on Raspberry pi3: @sierdzio I'm running it without X server, as I should Now, I'm curious about this, what libs are you using for glesv2 and egl?, I'm using the ones in /opt/vc/lib folder, and I also cross compiled the Qt with those Oh I don't remember to be honest. I think I didn't change anything from stock settings. I also didn't specify the OpenGL libs manually anywhere when building Qt or apps.

I just found that the problem was that the libqxcb-glx-integration plugin was not found. Putting xcbglintegrations plugins folder at the same level of the application fixed the issue.