I have a matrox dualHead2Go DP that can't handle the HDCP signals on the DP cable. I recently found a fix for this using a 'defaults write ...' setting. Today I updated OSX SL and lost that setting So when I have itunes or quicktime open my mouse is jumping and skipping every few seconds. does anyone know the relevant setting please. As far as I remember the tipster mentioned it disabled HD playback support in iTunes...
found it! Code: sudo kextunload /System/Library/Extensions/AppleUpstreamUserClient.kext/ sudo mv AppleUpstreamUserClient.kext AppleUpstreamUserClient.kext.backup source: http://www.insanelymac.com/forum/lofiversion/index.php/t152120.html
Works Great! Now how do I undo it? I was looking for a way to use mac computers in a mixed HDCP environment for AV system integration and this was the only solution that addressed the way the mac handled HDCP. I tried it using a HDMI DA to a LG monitor and a Atmos Samurai Blade HDSDI recorder with the HDMI to HDSDI converter option. I could record the desktop and any non-DRM source. So wonderful! Mission accomplished! But now my computer cannot play DRM protected content at all any thoughts?