#include <CoreFoundation/CoreFoundation.h>

#include <IOKit/IOKitLib.h>

int main() {

io_registry_entry_t registryEntry =

IORegistryEntryFromPath(kIOMasterPortDefault,

"IOService:/IOResources/IODisplayWrangler");

if(!registryEntry) return 1;

int err = IORegistryEntrySetCFProperty(registryEntry,

CFSTR("IORequestIdle"), kCFBooleanTrue);

IOObjectRelease(registryEntry);

return err;

}