Scorcho: Thanks, I figured that. I was compiling, and my software didn;t run due to some python interpreter version mismatch or something, and someone suggested possible issue in 64-bit vs 32-bit. I don't know much about these things, though. I just thought I'd try the 64-bit kernel to see if it did anything to my issue,a nod I thought I'd ask in general.
Does anyone else use Hibernatemode = 0?
For the uninitiated, there are three main hibernate modes (plus two if you count the secure versions):
0 = the original mode in macs pre-2005. When your computer went to sleep, it was instant, and wake was instant. RAM is powered during sleep to retain contents.
1 = RAM contents written to HDD at sleep, then powers down. Slow to wake.
3 = default mode (I think) for new macs. Writes out RAM contents to a sleepimage, and keeps RAM powered for fast wake.
I use 0, and not 3 because I then don't have to wait for the 30 seconds or so for it to write out RAM contents to disc - I always worry about moving the HD too much while writing, and closing my MBP and just picking it up and running doesn't sound like a great thing to me.
The main point of writing out to a sleepimage is that if you lose power entirely while it is asleep, when you turn it back on, it will pick up where it left off. I don't get this, obviously, but I try not to let it power out often.
An added advantage with keeping hibernate mode to 0 (besides not having to wait for it to sleep), is that you recover the sleepimage space (after deleting the image). Free 4GB!
I was just wondering if this all still applied in Snow Leopard.
My hibernate mode is still 0 and I get the fast sleep.
http://www.macworld.com/article/53471/2006/10/sleepmode.html