[Intel-gfx] Get brightness/gamma/contrast (currently IEGD user)

[Christopher James Halse Rogers]

On Tue, 2010-07-06 at 12:33 +0200, Dirk De Becker wrote:
> Hi all,
> 
> I am currently using IEGD (the Intel Embedded Graphics Driver), but I 
> would like to switch to the open driver supporting my 915GM device.
> With iegd, I am able to regulate brightness, contrast and gamma by using 
> iegd_esc_attr_t arrays.
> Can someone give me a hint on how to do this with the open driver?

You can get & set these properties from the XRandR interface.
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