I found a thread in the microsoft support forum that talks about this problem, but with computer games, rotating the display, or alt-tabbing. I had already disabled a long time ago all ambient brightness functions on my notebooks, including the Intel power management battery mode display energy saver. The 2nd Datacolor reply says Windows and some anti-virus and miscellaneous programs overwrite the LUT table, causing the flickering effect when it gets reset and then reloaded again by the Spyder software. But I think it's the LUT table as DFosse described. Some calibrators also have similar settings, and they should be disabled and kept off.Īfter re-reading the reply from Datacolor, one reply mentioned color profile, while the 2nd reply mentions the LUT table. This is often seen with laptops, and requires a manufacturer setting to be disabled. I rather suspect this is related to some automatic brightness or color temp adjustment setting. I've never, ever, heard of anything like this before (my own monitors are hardware calibrated and do not use the video card for this). The calibration might be, but again, this isn't something that needs to be loaded repeatedly. Lightroom loads the profile at application startup. It's used by color managed applications in a standard profile conversion from from source to display. It's a standard icc profile, just like any other icc profile. The profile is a description of the display in its calibrated state. This is usually stored inside the profile for convenience, but is not part of the profile as such and serves a different purpose. The calibration tables are loaded into the video card, as a quick and simple way to adjust the display. The confusion here is probably monitor profile versus calibration LUTs. I'm asking here because I'm using Lightroom with the color calibrated display, and wondering if anyone has also had a similar problem and a solution to it.
That's why I see a change in color on my display every minute or so, back and forth between the two types of colors.
Then since the Spyder software is set to check if the color profile is loaded every 60 seconds, I guess it reloads the color profile again and turns my display cooler and more green. I assume that this unloads the color profile and turns my display warmer and more red. You would have to ask them for more details about it. The interaction with USB, bluetooth, and power management is something which Datacolor support wrote to me, it's not something that I concluded or understand myself. Every minute or so the display will switch between either warmer and red, or slightly cooler and more green, hence the color profile being loaded and unloaded. My display is by default slightly more red and warmer, while the color profile generated by Spyder4 is more green and cooler.
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