Apple Event: May 7th at 7 am PT

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Level 1

4 points

Color calibration is only affecting one monitor in a dual display set up.

I have a new 12 core Mac pro. I have two identical Samsung syncmaster 245BW monitors. The monitors settings are identical.

I'm running OSX 10.7.4 the diplay card is the ATI Radeon HD 5770 1024 MB graphics.

One monitor is connected through the mini to DVI display adapter. The other directly into the one DVI port.

When I open Dispaly Preferences and go to color calibration what ever profile I choose or calibration I perform only affects one of the monitors.

Two Display preference panes come up, one on each screen, but no matter which Pane I'm in or which profile I choose or delete, and re-create. Only one monitor is affected.

I'm a bit baffled as I'm sure I should be able to calibrate my monitors independently, right? I know I have done it in the past.

Any help / suggestions greatly appreciated.

Mac Pro, Mac OS X (10.7.4)

Posted on Sep 24, 2012 9:27 AM

20 replies

Feb 3, 2014 1:37 PM in response to Noah Todd

Good news everyone,

I was also experiencing this bug and found a way around it. Its not a perfect fix but it works by exploiting the bug itself. Don't think it will work for 3 monitors though.

Here is what you need to do:

Before doing this, be sure you have two color calibrated profiles for each display using a Spyder or something. So Monitor-1 and Monitor-2
Go to your System Preferences > Displays
On Monitor 1, go to the Arrangement tab and drag the menu bar (not the whole display) to Monitor 2.
On Monitor 2 - change the Color profile to Monitor 2 (NOTHING SHOULD HAPPEN)
Back on Monitor 1 - under Arrangement - drag the menu bar back to Monitor 1
You should see Monitor 2's color CHANGE to the Monitor-2 color profile however the Display profile will still have the incorrect one selected (Monitor 1)
Back on Monitor 1 - Under the Color tab, select the profile Monitor-1 and VOILA. Each one has a different profile (despite Monitor 2 saying its using Monitor 1)

The bad news is you have to do this after EVERY restart.

Marbasse

Level 1

0 points

Feb 4, 2014 12:42 AM in response to Noah Todd

I haven't experienced this problem since I've been using 2 different displays. It's working fine for me under Mavericks too. However, I'm very surprised the issue was still not addressed by Apple. I wonder if the bug is affecting 2 identical Apple displays ?

Feb 4, 2014 9:40 AM in response to Marbasse

Forgot to mention I am on Lion 10.7.5 and cannot upgrade any further because my MacPro doesn't support it.

Using an

ATI Radeon HD 2600 XT 256 MB

with

2 Samsung SyncMaster XL2370

Checked my regio and the mac has the same serial number for both

Feb 6, 2014 11:12 AM in response to Marbasse

I have two identical Samsungs at work and have this problem, so it's not just identical Apple monitors.

Marbasse

Level 1

0 points

Feb 7, 2014 2:34 AM in response to SevenZark

There has been a misunderstanding I fear.

I've experienced the lack of color calibration issue for 2 identical monitors (these happened to be Samsung) under OSX 10.7, If I remember correctly. Thus, I decided to use 2 different monitors (Samsung both of them). The problem was gone. I've been functionning likes this ever since. And I'm now under Mavericks.

And I 'm surpised the issue hasn't been addressed by Apple as of today. Therefore I'm asking :

Do people owning 2 identical Apple monitors experience the color calibration problem ? I don't know myself. I'm just asking.

Color calibration is only affecting one monitor in a dual display set up.