We have a system with a Qt5 application, running with eglfs.
Because of bug in Qt / eglfs / somewhere else (flickering upper edge on the display on animation) we disabled double buffering for the application by setting env variable
FB_MULTI_BUFFER=1. We even tried
All three versions fix the flickering effect.
And all three versions lead to broken files in the rootfs.
It happens usually to the files which are needed by my applications (libstdc++, libqt5core,…), but sometimes other random files are destroyed (we checked the hashes of all files in the rootfs)
On the eMMC the files are still OK (we have a readonly-rootfs), but the Linux system thinks that they are broken.
After a reboot the files may be OK again and others are broken.
We have the same effect on different CPU modules, eMMC and RAM are OK.
The display (LVDS, split-mode) has a resolution of 1920x540. With other resolutions we have no problems (neither the flickering nor the broken files).
Are there known bugs in the i.mx6 graphics drivers or somewhere else in the kernel leading to this behaviour?
Are there other things we could try to fix the flickering edge or the broken files?