Color banding
I'm just posting a follow-up to my earlier post.
There is still a problem with
color banding, although the display is definitely better with this issue than before.
Although it may look ok for most uses, your display might be suffering from the same problem. It's easy to check: the following graphic should show smooth gradients everywhere:
On my display I have noticeable color banding in the blue to dark areas (and to a lesser extent in the red/magenta to dark areas) - it shows up as very pixelated, with pixels sort of "vibrating" between different shades of blue when it should all be one nice transition.
There is a thread on this issue with Macbook Pros on this forum
here.
Now it appears to me that how bad this is depends on the overrides file you're using. I think this is true because it was much worse when I was using a different overrides file before. It was easily noticeable on my desktop backgrounds before, now it is much harder to spot, making me think in the earlier post that the problem had gone (but it is still there).
Of course it also depends on the panel itself. But these are 6 bit panels dithered to look like they use 8 bits, and my guess is that the dithering algorithm looks at the overrides file to see how to implement the algorithm. (This is just my guess, folks, those with more knowledge please step in.) If the overrides file is not set up to properly match the specific panel you have installed, then there will be color banding with what looks to me like dithering artifacts showing up - this might explain the 'shimmering' or 'vibrating' effect that I'm seeing.
It might also explain the issues we're seeing with colors in Windows, if Windows implements dithering differently.
I'd very much like to know if those who seem to have the Samsung revision 04 panel working fine have any color banding with the above image. If you don't, could you post the overrides file you're using? If you do, then I'm guessing that this may be a problem we're going to have to live with, unless someone knows how to generate a better overrides file.