I have a DVI Doctor hooked up between a Zotac GT430 and an Onkyo TX-SR606 via HDMI -> DVI -> HDMI to bitstream audio.
The DVI output of the card is hooked up directly to my tv.
When everything is running fine, the HTPC, which is running Windows 7 x32 SP1, can see both displays.
However, from time to time, the secondary (Onkyo) display is not detected. When this happens, I have to hook up power to the DVI Doctor and get it to "refresh" its EDID info. After this, it works fine, sometimes for a couple of weeks, sometimes just a few days.
The device is slightly over 18 months old and the problem started a month or so ago. I know many people here use this particular device, so I wanted to know if anybody else has experienced this issue.