Blue screen of Snow Leopard - Display vs Color LCD Profile

Hi everyone.

Just thought I would let those people who are asking why (after installing Snow Leopard), they have a blue-tinted screen, it's because of the new "Display" profile. The original "Color LCD" profile has been replaced with a vile-looking, blue-tinted profile that is just horrible (IMHO). I have taken a screen grab of both profiles details, so you can see for yourself, as some extra settings have been added to the new profile. You will also note that the RGB tone response curve has been changed from a setting of 14 to setting of 2060, which is a pretty huge curve.

This is just one of several backward steps I have noticed in 10.6 and I have already reverted back to 10.5 while things settles down somewhat. I have also saved the Color LCD profile so that I can move it over to Snow Leopard should Apple not correct this washed-out blue/white disaster of a colour profile. Many things need changing before Snow Leopard feels like an upgrade (but talking about why the Firewall is now off by default, over-sized desktop and folder icons, the lack of any preference settings at all in QuickTIme X and other stupidly backward moves will be reserved for other posts). This is the first time in my 17-years of buying Mac's that I have ever reverted back to a previous OS so quickly.

Here is a link to the profiles:
http://c4.ac-images.myspacecdn.com/images02/50/l_42c93fde347949ad87947527db5fd72 3.jpg

13-inch MacBook Pro 2.26 and too many to list!, Mac OS X (10.5.8)

Posted on Aug 30, 2009 6:02 AM

22 replies

Sep 4, 2009 1:18 PM in response to nhsledder

I believe the problem is as nhsledder says - apple failed to put the 9cc2 file in the override folder.

A simply fix for this which worked for me (who didn't have a backup of the system folder) is as follows:

Copy the source from here

http://www.opensource.apple.com/source/AppleDisplays/AppleDisplays-1151.0.0/Over rides/DisplayVendorID-610/DisplayProductID-9cc2

into a new TextEdit file and save it without an extension as DisplayProductID-9cc2. Then move the file to the 'Machintosh HD>System>Library>Displays>DisplayVendorID-610' folder. You will need to authenticate at this point to drop the file into this system folder.

When you have done this, go to the display control panel then calibrate using the 'Display' profile. So long as you select the native white point this should be identical to the old ColorLCD color profile and everything will look great again.

Sep 4, 2009 2:27 PM in response to nhsledder

As a follow up, I did speak with the level 2 tech from Apple and they followed along on their end and saw that indeed "DisplayProductID-9cc2 was missing from that folder in Snow Leopard.

They were going to file a report with the engineering dept. to look into fixing this in an update.

At least in the mean time we have a workaround for this!

bman99

Level 1

15 points

Sep 15, 2009 11:30 AM in response to DJ Voyetra

Hi,

I don't think there is anything wrong with my screen, but is there any easy way to check? Perhaps looking in the About this Mac section?

Thanks,

Brandon

tzar26

Level 1

0 points

Sep 18, 2009 2:31 PM in response to DJ Voyetra

I'm having the same washed-out color problem, with a twist: It's only on one of my profiles - my admin profile. My other profile I use looks great, but it's terrible in the admin prof. So very, very confusing.

I've calibrated numerous times and did the "DisplayProductID-9cc2" trick all to no avail. If I didn't have my other profile working correctly, I would revert to 10.5. This is not a good problem at all.

Any other ideas out there?

Thank you - Jeff

pangolin

Level 1

5 points

Sep 18, 2009 7:33 PM in response to tzar26

I'm encountering the same *blue tint* problem on my 15" MBP, and the addition of the 9cc2 color profile doesn't seem to set things right. How do I determine which screen my mac has and whether or not I have the requisite profile in the system display folder? I looked in System Profiler but it doesn't seem to offer much info about my screen hardware.

Sep 18, 2009 8:19 PM in response to pangolin

Go to: System Preferences -> Displays -> select Color tab at top -> Open Profile -> in the window that opens, scroll all the way down to the bottom item, which should be "Apple display make and model" and select it. Manufacturer & Model numbers are shown below.

Your LCD model wouldn't be 9cc2 because that's a 13" model.

However once you get your manufacturer & model numbers you can look to see if it's in there. Go to: System -> Displays -> Overrides -> DisplayVendorID-(go to your manufacturer #) -> DisplayProductID (your model #).

Oct 9, 2009 12:34 AM in response to Schmoward

I tried the workaround from Schmoward but didn't work. I copied the 9cc2 override file and after that calibrated the Display profile but no improvement. The brightness level was still very high after I rebooted. Did I miss something? Do I need the Color LCD profile from a 10.5.8 MBP 13" with the 9cc2 screen?If so can anyone upload it here?

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Blue screen of Snow Leopard - Display vs Color LCD Profile