Why does the OSD fail to generate if the Bits Per Pixel Color Depth is set to 2?
The following error occurs:
This is a known issue in the On Screen Display v3.0 that will be fixed in the next release.
You can work around this problem by setting the Bits Per Pixel Color Depth to 1.
For a detailed list of LogiCORE IP Video On Screen Display Release Notes and Known Issues, see (Xilinx Answer 33257).