Hey c-attack,
Sorry the delayed reply. To answer your previous post, I disabled fast boot and still encountered the issue.
1. I will need to review iCue again to confirm but I vividly remember the header setting you mention and know it is set to Auto by default. I'll try switch it to PMW to see if this makes a difference
2. When I created the temperature sensor fan curve for my LL120s (6 total), I set the fan speed to 500. Again, I'll go back through iCue to confirm the settings applied. As you noted in #3, I recall having difficulty the first time I tried adjust any of the fan settings.
3. The sensors seem to be working. I'm getting temp readings on all four. When I get time, my plan is to remove all four and try only one to see if this makes any difference.
See if this link works, it's a short clip of what I'm experiencing: https://www.dropbox.com/s/cbtt6mbqftcdnl7/IMG_0638.MOV?dl=0