qt gui on rpi
I write a gui with qt. I run it on rpi2 touchscreen lcd(3.2 inch). when it executes , it's not stable on lcd and it disappear with each click. sometimes gui is disappeared totaly and sometimes part of touch click is disappeared. how can I fix this problem?
I had similiar problems which could be solved in my case by extending the GPU memory (via
raspi-config, set it to 265 MB instead of the default 64 MB).
Thank you for your response. Unfortunately, changing GPU memory to 256MB didn't solve the problem :(
which platform plugin do you use? xcb, eglfs, linuxfb?
Are you running an xserver?
This post is deleted!
I'm using linuxfb plugin and runing xserver
Ok, so just shut down your xserver or use xcb.
If using linuxfb and running a xserver, both will write to the framebuffer, which cause the flickering.
And with edev both will respond to touch events.
thank you for your response. I try it.