Hi, I know there was a known issue with flicker but I can't seem to find a fix - even after searching the forums and other online resources. Can someone tell me if this issue was ever solved please? I've just bought a used Mac Mini mid 2011 2.5 with the AMD Graphics chip. As soon as I plugged into my receiver via HDMI the flickering started - there were no problems when connected to directly to Plasma TV. Thunderbolt connection has the same issue when plugged into receiver but fine with TV. My receiver is a Marantz 1605 and my plan was to play Hi-Res audio from Mac Mini via HDMI connected to the Marantz hence my need for HDMI/Thunderbolt connection between Mac and Marantz. All help appreciated!