The i810 driver doesn't seem to support setting gamma values to get around hardware-problems where for example grayscales gets a blue tint (wich i get on my Acer 382Tmi (Intel 855GM)).
I guess the real problem is that the driver tint's my screen blue, but i'm not sure that this is the 810-drivers fault (though the screen doesn't tint on windows). Anyway the need for gamma-correction is enough since this is a quite common chipset on laptops.
*** This bug has been marked as a duplicate of 2826 ***
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