[Bug 70721] yoga 2 pro: pentile matrix display color rendering distorted

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=70721

--- Comment #5 from Chris Wilson <chris at chris-wilson.co.uk> ---
You can always ask Lenovo. As far as I know the backlight does not have the
flexibility (in hue or pixel-level granularity) to be able to do fine color
adjustment. The only nauseau inducing trick I can think of would be to vary the
brightness level depending on content to enhance contrast and decreased
perceived discrepancy.

With care, you should be able to use create a calibration profile that
effectively maps every single RGB value to minimise the error. I don't think
ColorHug is quite that good, but it should be sufficient to improve colour
reproduction. Equally a profile generated by another Yoga2 Pro user would also
be a significant step forward. (In theory it should be quite simple!)

Thinking to myself, what would be interesting would be to use a ColorHug to
find the best gamma curves. (Those are done in hardware, the calibrated color
correction requires a post-processing pass by the gPu.)

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