Hello,
Here's the context of my issue.
- I'm using buildroot 2022.11 to build a rootfs for a custom stm32mp157 board using a LCD display;
- the Linux kernel is 5.10.116 (https://github.com/STMicroelectronics/linux/tree/v5.10-stm32mp);
- the GUI app is built using the Qt5.15 QML framework.
After the buildroot team upgraded the gcnano binaries package to v6.4.7 I'm facing flickering issues with the display. To figure out if the gcnano binaries are the root cause, I manually downgraded the gcnano to v6.4.3 in which the flickering issue is not present.
I can confirm that the same rootfs/kernel with the gcnano binaries 6.4.3 has no flickering issue.
Find attached to this post two videos :
- one showing that everything works fine with gcnano 6.4.3;
- one showing the flickering issue with gcnano 6.4.7.
The display is mandatory for our product and we can not accept flickering issues like this one.
How can we fix this issue ?
Let me know if you need more traces or tests.
Best Regards
Alexandre Gambier
