I can only check with the QRH stating:

Quote:

BLEED OFF APU One of the following occurs: •The APU bleed valve is closed because of a system fault •The APU bleed switch is OFF

That switch is a set and forget one, so to speak. "Auto" is your normal position (which applies to a lot on the 777) and any OFF condition would point to an active failure scenario.

Besides, I can highly recommend a small tool making long flights very enjoyable and less 'looking at the sim's water, for eight hours'. It's called Quantum Leap and you can find it here: http://asn.another company.com/?p=24688 You can use it to take off heavy, like you would on long flights, and then jump closer to your destination, lets say 400nm out. So you can still run some cruise and, most importantly, a nice landing more often.