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I have OpenGL code which successfully acquires and renders to a RGB10_A2 visual on a Windows 7 system, using a Quadro 4000 (current and previous drivers) connected to a Dell U3011 display via DisplayPort.
Unlike other DeepColor displays I've tried, this display/card combination appears to trigger the display to switch it's scanout signal for every viewport/graphic context I create, which results in a lot of "flashing" of the entire display during startup.
I can't find any settings in the NV control panel or Dell on-screen menus to help configure the system to be more DeepColor/30-bit desktop friendly.
Has anyone else experienced this issue and/or come up with a solution to avoid this behavior?
As an update, this still occurs if I switch to a 10-bit grayscale Dome E2 display via DVI as well (still using Quadro 4000). ATI FirePro cards didn't exhibit this behavior, so I think this is a driver issue. – holtavolt – 2011-11-03T22:42:59.240