I have found no issues with this version for display profiling on Big Sur (just don’t install the HASP drivers). Speaking of i1Profiler, I’m still using an oldish i1Pro v1 spectrophotometer, and the latest version of i1Profiler that supports this instrument is 3.1.1.
The dock, the background, and most window manager stuff is totally washed out, as you can see on the screen grab. Big Sur is unable to handle v4 LUT-based profiles properly.This is the exact same bug that plagued Catalina. With matrix-based profiles (v2 or v4) Big Sur fails to color-manage the cursor (mouse pointer, etc), which looks odd blue (DK are our standard color temperatures, so a 7000-8000K cursor stands out like a sore thumb).After an afternoon’s worth of debugging and work, here’s what I found. Interestingly, some older profiles exhibited this issue, others showed the regular Catalina “blue cursor” issue, while a few were OK. And I also think that all monitors are color-important, so they have to be properly calibrated and profiled. I do profile each display on production machines, as we’re doing color-critical work on them. It turned out pretty quickly that the cause is the custom ICC display profile.
Now, I have installed Big Sur betas and even the final release on the very same MacBook on an external disk countless times, with no such issue. It was suspicious even during the upgrade that something wrong is going on: there was no difference between checked and unchecked states of the presented check boxes. Spoiler: macOS Big Sur fails to properly use table-based v4 ICC profiles…
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