mtx + Matrox P650 + XF86VidModeSetGammaRamp() problems ?

[Graeme Gill]

Alex Deucher wrote:
> I'm guessing their driver either ignores the request or doesn't
> implement the functionality in some cases.  Unfortunately since the
> driver is closed source about all you can do is complain to matrox.

OK thanks. It appears that XF86VidModeGetGamma() is implemented,
while XF86VidModeSetGammaRamp() is not, making display calibration
impossible.

Graeme Gill.