Native Build von Qt5 on Raspberry Pi 3 errors: Unable to query physical screen size, defaulting to 100 dpi. To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).

Tk25

Hello everyone,
I have created a GUI (with QtDesigner (Qt5) as external tool of PyCharm), and want to run on my Raspberry Pi 3. I've used this guide link text

I get this error message:

Unable to query physical screen size, defaulting to 100 dpi.
To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).

In my "output" file I have "FontConfig ............. No" instead of "FontConfig ............. Yes",

I also have at

        pi@raspberrypi~/opt/qt5$ which qmake      
                      /usr/bin/qmake

instead of

        pi@raspberrypi~/opt/qt5$ which qmake
                     /usr/local/qt5/bin/qmake

I also have a full-screen GUI on my Raspberry Pi without font-text, although I did exactly the same.

I need help please

mrjj

@Tk25

Hi
Did you try to set the QT_QPA_EGLFS_PHYSICAL_WIDTH etc?

http://stackoverflow.com/questions/18518280/raspberry-pi-qt5-set-physical-screen-size

Tk25

@mrjj
Hi
thx for your reply, yes i try to set all QT_QPA_EGLFS_PHYSICAL_WIDTH = 194, QT_QPA_EGLFS_PHYSICAL_HEIGHT= 110
QT_QPA_EGLFS_DEPTH= 20 (all im mm for 7" Touchscreem Display). But i'm still having the same problems.

Does anyone have any other suggestions?