ATOM_BIOS_INFO_EXTENDED_DESKTOP_SUPPORT 2883 drivers/gpu/drm/amd/include/atombios.h #define ATOM_BIOS_INFO_EXTENDED_DESKTOP_SUPPORT     0x0004
ATOM_BIOS_INFO_EXTENDED_DESKTOP_SUPPORT 2442 drivers/gpu/drm/radeon/atombios.h #define ATOM_BIOS_INFO_EXTENDED_DESKTOP_SUPPORT     0x0004