Default Fan RPM with Lion vs. ML

chefwong

macrumors 6502
Original poster
Jan 17, 2008
285
8
I've been troubleshooting my MBP after post ML upgrade. 16GB Corsair Memory with Crucial M4 SSD. Nary a hiccup with Lion, at least 2-3 lockups per day after ML. In looking at temps, I noticed that the *default* RPM speed of ML is 2000RPM versus the *default* RPM speed of Lion is 4000 RPM.

Anyone else notice this.

Still debugging, monitoring temps, etc to determine the root cause of the lockups.
 

maflynn

Moderator
Staff member
May 3, 2009
65,439
31,479
Boston
My default fan speed has always been 2,000, whether we're talking Snow Leopard, Lion or Mountain Lion
 

chefwong

macrumors 6502
Original poster
Jan 17, 2008
285
8
My older late 2010 MBP, running Lion...when I went to check and compare, the default fan speed was 4000
 

SpazzyMac

macrumors regular
Jul 15, 2011
116
0
Denmark
my default speed is definitely lower ;)
stays at 71°C without killing my ears, so it is definitely an improvement with the heat output tolerance, only cranks it up when it's above 4000rpm for 80°C+
 

chefwong

macrumors 6502
Original poster
Jan 17, 2008
285
8
Genius Bar tomorrow.

I give up. 2nd lockup of the day.

Not sure if motion sensor has any play in this, but sometimes, if I just simply flip the lid down and put it down on a desk or something, the minute I put it down...it's goes into lockup. You know it's happened as it makes the system lockup *error noise*...
 

gentlefury

macrumors 68030
Jul 21, 2011
2,848
0
Los Angeles, CA
Have you tried restoring the OS? That's all they will do for you. My rMBP was crashing and doing weird things last week, I restored to my time machine and now everything is working perfectly.
 

sweetbrat

macrumors 65816
Jun 17, 2009
1,443
1
Redford, MI
If just setting the computer down causes problems, have you checked to make sure the RAM is seated properly? Maybe one of the chips is loose. Just a thought.