If for some reason you want to deafen yourself, or your Octane might be overheating (although my problem was solves by swapping out a faulty 13W3->DB15 convertor) you can configure your Octane to run the system fan at high speed.
Once your Octane is powered back on, the fans should start running at high speed. To change the speed back, repeat the process above with "setenv -p fastfan 0".