I have already asked this question on computer graphics site but i think it would be more appropriate to do it here.
I have a late 2006 mac pro 1.1 with possibly replaced graphics card (now ATI Radeon HD 2600). Trying to use two monitors setup side by side, same Samsung 23.5'' CF396's with pretty close serial numbers, both from the same retailer.
The problem is, when I try to calibrate the monitors, they act like separate displays and I can separately calibrate both of them. Calibration and assignment for first monitor works like advertised, but when I try to calibrate the second one, calibration affects the monitor until I press the finish and close button. After the click, second monitors goes back to uncalibrated state and new calibration is being assigned to the first one.
This is the information gathered from the System Information >> Graphics/Displays tab.
Displays: C24F390: Resolution: 1920 x 1080 @ 60 Hz Pixel Depth: 32-Bit Color (ARGB8888) Display Serial Number: HTQM100539 Main Display: Yes Mirror: Off Online: Yes Rotation: Supported C24F390: Resolution: 1920 x 1080 @ 60 Hz Pixel Depth: 32-Bit Color (ARGB8888) Display Serial Number: HTQM100623 Mirror: Off Online: Yes Rotation: Supported
I don't know if it is the expected behavior to show both displays under the same name "C24F390" but other than that it looks what I would like to see.
I read that macs are capable to assign different profiles to different monitors but whenever I click a profile, from the tab in first or second monitor it doesn't matter, only the first monitors gamut is changing. Am I doing something wrong on the procedure?