ATOM_BIOS_FUNCTION_VESA_DPMS 8263 drivers/gpu/drm/amd/include/atombios.h #define ATOM_BIOS_FUNCTION_VESA_DPMS            0x4F10          // Set DPMS
ATOM_BIOS_FUNCTION_VESA_DPMS 6993 drivers/gpu/drm/radeon/atombios.h #define ATOM_BIOS_FUNCTION_VESA_DPMS            0x4F10          // Set DPMS