Originally Posted by tabari
If it is all about the bitrate, why doesn't it support 1080p24 3D
HDMI 1.4 doesn't mean anything for cables or anything else. HDMI logo guidelines prohibit the use of a version number with any HDMI product as of January of this year, and much earlier for cables. The reason for this prohibition is that it confuses people like you.
As previously stated, for HDMI cables, it all comes down to the bit rate they will handle.
For active devices, such as your "switch", it comes down to bit rate (until very recently no HDMI electronics could handle full high speed bandwidth) and features supported. When a source (your HTPC) and a sink (whatever you are using to display the signal) connect, the sink sends its capabilities to source, and the source selects the resolution based on that information. If there is repeater (switch) in between, it has to pass on the information to the source. It may also modify it based on its own capabilities. There is really no difference between the electronics required to pass a 3D signal and a 2D signal. A repeater only processes bits and doesn't care about the content. And there are "1.3" switches that handle 3D just fine. So, the only way a switch is going to cause this problem is either simply not passing on all the sink information to the source, or it is resetting the bits that show the source is capable of 3D. In the case of a simple switch, the solution would be to get a switch that is specified as 3D capable.
However, what you have is not a simple switch, but a matrix switch. It is a combination of a switch and a splitter. Splitters are a different beast.. Because the source can only output one resolution, and two or more sinks with different capabilities may be connected, the spltter part of the matrix will set the resolution passed on to the source to the common capabilities of the sinks. IOW if there is a 3D sink and a 2D sink attached to the matrix, the source sees 2D. I suspect this is what you are experiencing.