One of our customers came in for me to profile the monitor on his Mac laptop, which is a service we occasionally provide. I was not successful because it seemed like the profile was being applied twice, perhaps by two different processes.
When profiling on a Mac, I first assign a profile to the display that I intentionally adjusted to cause the blue and green colorants to be reduced significantly so the display will have a strong reddish color. By doing this, I can make sure the profiling software successfully tells the system to turn off color management when I see the display change to more normal colors.
After assigning the test profile in the displays category in system preferences, everything went red, but only while the system preferences application was active. When it closed, the colors went back to the factory default. After rebooting the computer, everything was reddish. I've never had to reboot to make a profile stick before.
When I started the profiling software (Optical from Pantone Colorvision), the colors became somewhat more normal, but still had a red cast to them. I did not proceed to profile because without color management turned off, the profile would be useless.
I then looked at the display color while changing between different standard profiles in system preferences, and the color changed on the monitor as I chose different profiles, but always still had a reddish cast, which indicates that a profile is being applied twice, and that only one of the two is changing when I switch profiles in system preferences. I suspect that the other profile changes after reboot, resulting in the same profile being applied redundantly.
The customer said he didn't do anything unusual and didn't install any software other than CS3. His OS is 10.5 (I can't remember the sub-version). I cannot repeat the problem on another system (no laptops, though). I profiled his last laptop, which was OS 10.4, and it seemed to work great, although I wasn't using the "red" profile for verification then, so it's possible that profile was being applied on top of itself also, and he was still happy with the result.
Also, does anyone know of a way to calibrate laptop monitors (i.e., adjust RGB curves)? They always seem to be more limited than stand-alone monitors.
When profiling on a Mac, I first assign a profile to the display that I intentionally adjusted to cause the blue and green colorants to be reduced significantly so the display will have a strong reddish color. By doing this, I can make sure the profiling software successfully tells the system to turn off color management when I see the display change to more normal colors.
After assigning the test profile in the displays category in system preferences, everything went red, but only while the system preferences application was active. When it closed, the colors went back to the factory default. After rebooting the computer, everything was reddish. I've never had to reboot to make a profile stick before.
When I started the profiling software (Optical from Pantone Colorvision), the colors became somewhat more normal, but still had a red cast to them. I did not proceed to profile because without color management turned off, the profile would be useless.
I then looked at the display color while changing between different standard profiles in system preferences, and the color changed on the monitor as I chose different profiles, but always still had a reddish cast, which indicates that a profile is being applied twice, and that only one of the two is changing when I switch profiles in system preferences. I suspect that the other profile changes after reboot, resulting in the same profile being applied redundantly.
The customer said he didn't do anything unusual and didn't install any software other than CS3. His OS is 10.5 (I can't remember the sub-version). I cannot repeat the problem on another system (no laptops, though). I profiled his last laptop, which was OS 10.4, and it seemed to work great, although I wasn't using the "red" profile for verification then, so it's possible that profile was being applied on top of itself also, and he was still happy with the result.
Also, does anyone know of a way to calibrate laptop monitors (i.e., adjust RGB curves)? They always seem to be more limited than stand-alone monitors.