_systemMessageClientMask &= ~kSystemMessageClientLegacyApp;
if ((_highestCapability & kIOPMSystemCapabilityGraphics) == 0)
_systemMessageClientMask &= ~kSystemMessageClientKernel;
_systemMessageClientMask &= ~kSystemMessageClientLegacyApp;
if ((_highestCapability & kIOPMSystemCapabilityGraphics) == 0)
_systemMessageClientMask &= ~kSystemMessageClientKernel;