Hi,
When I set resolution 3840x4320 60Hz (1074MHz pixel clock), under Linux (using ARandR), the pixel values change slightly for a static image. It is not visually noticeable, but when I capture the RGB data on my FPGA board (Xilinx ZCU102), I can see the CRC of the data is changing.
Under Windows, the CRC remains the same using the same resolution.
Windows 10 64 bit driver: 440.97
Ubuntu 20.04 Linux driver: nvidia-driver-440 (proprietary, tested)
EDID I Use:
0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x61, 0x98, 0x23, 0x01, 0x00, 0x00, 0x00, 0x00,
0x28, 0x1C, 0x01, 0x04, 0xB5, 0x3C, 0x22, 0x78, 0x26, 0x61, 0x50, 0xA6, 0x56, 0x50, 0xA0, 0x00,
0x0D, 0x50, 0x54, 0xA5, 0x6B, 0x80, 0xD1, 0xC0, 0x81, 0xC0, 0x81, 0x00, 0x81, 0x80, 0xA9, 0x00,
0xB3, 0x00, 0xD1, 0xFC, 0x01, 0x01, 0x04, 0x74, 0x00, 0x30, 0xF2, 0x70, 0x5A, 0x80, 0xB0, 0x58,
0x8A, 0x00, 0x54, 0x4F, 0x21, 0x00, 0x00, 0x1A, 0x4D, 0xD0, 0x00, 0xA0, 0xF0, 0x70, 0x3E, 0x80,
0x30, 0x20, 0x35, 0x00, 0x56, 0x50, 0x21, 0x00, 0x00, 0x1A, 0x00, 0x00, 0x00, 0xFD, 0x08, 0x1E,
0x3C, 0x32, 0x0F, 0x6C, 0x01, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xFC,
0x00, 0x58, 0x69, 0x6C, 0x69, 0x6E, 0x78, 0x20, 0x73, 0x69, 0x6E, 0x6B, 0x0A, 0x20, 0x01, 0xAE,
0x70, 0x12, 0x5A, 0x00, 0x00, 0x81, 0x00, 0x04, 0x23, 0x09, 0x03, 0x07, 0x03, 0x00, 0x50, 0x87,
0xA3, 0x01, 0x04, 0xFF, 0x0E, 0x9F, 0x00, 0x0F, 0x80, 0x0F, 0x00, 0xDF, 0x10, 0x9A, 0x00, 0x03,
0x00, 0x13, 0x00, 0x87, 0xA3, 0x01, 0x04, 0xFF, 0x0E, 0x9F, 0x00, 0x0F, 0x80, 0x0F, 0x00, 0xE1,
0x10, 0x98, 0x00, 0x03, 0x00, 0x13, 0x00, 0x87, 0xA3, 0x01, 0x08, 0xFF, 0x0E, 0x9F, 0x00, 0x0F,
0x80, 0x0F, 0x00, 0x74, 0x11, 0x05, 0x00, 0x03, 0x00, 0x00, 0x00, 0x87, 0xA3, 0x01, 0x08, 0xFF,
0x1D, 0x3F, 0x01, 0x2F, 0x80, 0x1F, 0x00, 0xDF, 0x10, 0x9A, 0x00, 0x02, 0x00, 0x04, 0x00, 0x60,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x90,
The HW setup is identical for Windows and Linux.