RandR extension missing error
aritger at nvidia.com
Tue Jun 5 07:18:31 PDT 2007
Hi Hal, sorry for the slow response.
On Sun, 3 Jun 2007, Hal V. Engel wrote:
> So how do I get Xinerama features with out Xinerama enabled? Twinview is not
> the correct answer since twinview does not allow for correctly setting the
> video card gamma tables for the displays. IE. in twinview the XFree86
> VidMode extension does not work correctly for multipule displays (I have been
> told that it also does not work correctly for drivers that use mergefb).
> Only one gamma table is available for both displays and this is all but
> useless for my needs. The ability to set individual per display video card
> gamma tables is a requirement for any system used for color critical work.
Understood on the need for per-display device LUT control. Unfortunately,
the XF86VidMode extension only gives control with per-X-screen
granularity, because TwinView/mergedFB drive multiple display devices
without the core X server knowing. RandR 1.2 exposes this more cleanly.
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