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Qt5 app fails creating the EGL surface - Firefly RK3288 (Mali T764)

amoreno over 8 years ago

Hi all,

I have a Firefly board with Ubuntu 14.04, Kernel 3.10, and the Mali binaries from the package "malit76xr5p006rel0linux1fbdevtar.gz". I've built the Mali SDK OpenGL demos, and they run ok over the Ubuntu X11 desktop, obviously, they override some screen area while they are running.

Then I've built the Qt 5.8 framework without problems, its summary shows the QPA EGLFS Mali backend available, but when later I build any Qt based app, they don't work and show the following error:

EGL Error: Could not create the egl surface: error = 0x3009

Is possible my libgbm.so is not compatible with the fbdev version of libmali.so I am using?
But in such case, why do the Mali SDK demos work correctly?

Thanks in advance!
Ariel.

Top replies

Myy over 8 years ago +1 verified

You might need Wayland specific Mali Userspace drivers if you want to have a GBM library specifically tailored for Mali GPU. You could give the latest drivers a shot, combined with ARMbian stable (4.4...
amoreno over 8 years ago in reply to Myy +1

Hi Myy, Thank you by your reply and suggestions! I've upgraded to Kernel 4.4 (Rockchip specific) and the referred EGL error disappeared, it means my Qt based app begun to work, without the need of...