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UvinduW / Cross-Compiling-Qt-for-Raspberry-Pi-4

A guide to cross-compile Qt 5.15.0 for the Raspberry Pi 4 Model B
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Can not open in windowed mode in Qt 5.15.2 #10

Open swdmnd opened 3 years ago

swdmnd commented 3 years ago

I followed the tutorial but can't open the app in windowed mode. The error is: qt.qpa.plugin: Could not find the Qt platform plugin "xcb" in "" Could not set DRM mode for screen HDMI1 (Permission denied) Could not set queue DRM page flip on screen HDMI1 (Permission denied)

If I run a program from console mode, it runs in fullscreen. What should I do? I want to be able to run qt programs in windowed mode.

UmutDumandag commented 3 years ago

I got the same error as well. Did you solve the problem? @swdmnd

swdmnd commented 3 years ago

I haven't found a solution for this. I think qt is trying to access the hardware directly instead of using X. I don't know where to start.

cubit9-danielpeyer commented 3 years ago

Did you try this? I had the same problem.

nano .profile and add at the end of the file export QT_QPA_EGLFS_ALWAYS_SET_MODE=1 save and close.

Logout and login again ... Start your Qt program

fcyinxunpeng commented 3 years ago

@swdmnd hello, did you fix this problem? i set the env QT_QPA_EGLFS_ALWAYS_SET_MODE=1 in .profle and when i switch to tty1, by press ctrl+alt+f1, it can show my app