As I expected, the correction matrix improved the situation of the aged i1 display2 but the results aren’t good enough. I guess that aged filters affect the sensitivity of the device for certain wavelengths, so although it was better than nothing, the result was still off to be considered seriously.
I should say goodbye for once and thank it for its (rather short) service.
The Colorhug1 went from zero to decent with the CCMX, so I call it a win. It took years, but it’s solved. I think I can conclude that the factory calibration was crap, because now that I loaded the CCMX for one screen I can get the rest of my screens reasonably close with it, when it was impossible with the factory settings or the contributed CCMX (which in turn were probably created using the factory calibration as baseline, but that’s just speculation, I really don’t know).
I’m bringing this up here because I know there are dozens of people who bought their colorhugs and they are resting now in a drawer because they could never fix the damn red shift. For them, it is possible that the LG 22MP55 CCMX I uploaded improves things, although a custom matrix from a spectro and the target screen is definitely the proper way to go.