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by jayant_T
Sun May 03, 2020 4:00 pm
Forum: General discussion
Topic: Could not queue DRM page flip on screen HDMI
Replies: 8
Views: 2406

Re: Could not queue DRM page flip on screen HDMI

Hi, I just solve this problem.
The eglfs.json is not needed.
just do this:

Code: Select all

export QT_QPA_EGLFS_ALWAYS_SET_MODE="1"
and everything goes well.

But I don't konw why, I hope if someone can tell me.


Remarks:
Raspberry pi4,
EGLFS, EGLFS EGLDevice, EGL GBM EGL x11........yes
by jayant_T
Sun May 03, 2020 11:44 am
Forum: Advanced users
Topic: Anyone cross compiled QT for the Pi 4 yet.
Replies: 31
Views: 14205

Re: Anyone cross compiled QT for the Pi 4 yet.

Hi all, I'm trying to crosscompile qt 5.12.5 on raspberry pi 4. I have installed all this packages: sudo apt-get update sudo apt-get build-dep qt4-x11 sudo apt-get build-dep qtbase-opensource-src sudo apt-get install libegl1-mesa libegl1-mesa-dev libgles2-mesa libgles2-mesa-dev libgbm-dev I'm using...
by jayant_T
Sat May 02, 2020 3:02 pm
Forum: General discussion
Topic: How to cross complie QT5 fro pi4 with HW accelerate?
Replies: 0
Views: 317

How to cross complie QT5 fro pi4 with HW accelerate?

Hello everyone, I'm trying to cross compile QT5.14 for my Raspberry Pi with hardware eglfs, and I have encountered many difficulties. There are two cases: Running on a software rasterizer (LLVMpipe) I have installed these: apt install libegl1-mesa-dev libgbm-dev libgles2-mesa-dev mesa-common-dev The...

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