If you run Bodhi on a GMA500, you probably have a netbook, most likely with a webcam. For a graphics solution that works with webcams have a look here: http://www.bodhilinux.com/forums/index.php?/topic/408-gma500/ Vaapi works as well (for all these other devices where they used the GMA500), but is slightly less stable than the PSB drivers (https://launchpad.net/~gma500/+archive/ppa). However, the PSB drivers do not have as good 3D support. Basically, what you get with PSB is screen rotation, what you get with EMGD is 3D and Xvideo (you'll be able to see yourself and others on the webcam) - see this thread as a workaround for rotation on EMGD (http://www.bodhilinux.com/forums/index.php?/topic/51-t91-bodhi-and-emgd/).
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