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Snow Leopard 13" MBP Screen Brightness Bug?

L

lorkp

macrumors member
Original poster
Apr 27, 2005
95
0
The minimum brightness setting in Snow Leopard is A LOT brighter than the minimum setting in Leopard. In another thread someone thought it had something to do with having a 9CC2 panel. I happen to have a 9CC2 panel.

Please post if you are having this problem and whether you have a 9CC2 panel or not.

Thanks
 
I have this model and I'm definitely having this issue. I didn't stumble across this thread; I noticed this problem and then searched it so it's definitely not in my head.
 
Same here. At the minimum brightness setting in Snow Leopard, my screen feels about as bright as the halfway-point on Leopard. Battery life seems to have taken a hit, too. :(
 
lorkp said:
The minimum brightness setting in Snow Leopard is A LOT brighter than the minimum setting in Leopard. In another thread someone thought it had something to do with having a 9CC2 panel. I happen to have a 9CC2 panel.

Please post if you are having this problem and whether you have a 9CC2 panel or not.

Thanks
Click to expand...

This is probably something to do with the gamma setting Snow Leopard ships with. In Leopard, the default gamma setting is 1.8 and Snow Leopard changes this to 2.2, the standard for television.

A gamma setting of 2.2 makes images seem more vivid and bright, hence why your display looks different under SL. You can change the gamma back down to 1.8 in System Preferences > Displays > Color > Calibrate.
 
I haven't noticed any issues with mine after upgrading to Snow Leopard, but I have the 9CBD (BD9C) panel in mine. I also noticed that my gamma was still set to 1.8; Snow Leopard didn't change it.
 
Fixed in 10.6.2

Mac OS X Update 10.6.2 fixes this - tested it myself.

From the release notes:

Graphics fixes provided for:
* addresses functionality with specific display models
 
lodev said:
Mac OS X Update 10.6.2 fixes this - tested it myself.

From the release notes:

Graphics fixes provided for:
* addresses functionality with specific display models
Click to expand...

Wow, thank you so much. I am having this issue too. After trying to set the gamma that many people say, my screen still has a blue tint and it's still brighter than it was before I upgraded to Snow Leopard. Hopefully this update will fix it.
 
i dont know but after update the system, the book is overheating. 70 °C and just surfing the web without flash.
 
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