Can you submit the EDID for your monitor? AML GXL No Video or Bad Video on Monitor
It might be the 144Hz refresh rate clock not working properly with the timing we have in the kernel. 144Hz QHD and 3440x1440 displays are problematic.
sudo ldto enable spicc-cs1
sudo ldto enable spicc-cs1-ili9486-xpt2046
This does nothing as it does not persist after reboot.