Follow along with the video below to see how to install our site as a web app on your home screen.
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You also have Matrox MXO option if you are okay with 8-bit.
Also, Snowleopard runs with 2.2 default, so use something like EyeOne and set the target to gamma 2.2. then your display stays at 2.2 as long as whatever app you are using don't change it.
Possibly one reason it has not worked is I'm using a DVI to HDMI connector on the output of the MXO and the HDMI goes to the 1080p viewsonic TV.