Solved iPhoto viewing problem for headless Mac Mini
Had problems viewing photos that were stored on a headless mac mini (used Back to My Mac to access). Couldn't see photos in large or full view, only thumbnails. Adding this to the mini completely resolved that problem. Yippee.
PROS: Used one of these in an office so the computer didn't loose the handshake with a plasma TV. Now the computer doesn't have to be rebooted every time the TV is turned off. Works great and an easy setup.
Solves the problem introduced with multiple displays on a single output.
Solves the screen resolution problem I had in my setup where a Mac mini would have trouble reading what resolution and refresh rate to use while sending the signal through an HDMI splitter (MonoPrice 4921) to a TV and a projector. I simply programmed the DVI Doctor while connected directly to the TV, then reconnected the HDMI splitter. I have been running this way for quite some time and the Mac mini always thinks it is only connected to the TV, even if nothing other than the DVI Doctor is connected.
PROS: Presents a stored set of information (size refresh, etc) from a display to an input device even when the display is disconnected. Works well in front of a splitter where more than one brand/model of display is used. Can be programmed with information from a standard display and then used with a display that provides information in a way that a device doesn't recognize. Power supply only needed during programming.
CONS: DVI cable provided isn't high quality - if using on a high-end system consider buying a high quality DVI cable as well.
I bought this device 6+ months ago and was happy with it using a DVI source. Today I have found that it passes HDMI audio from a 2010 Mac mini HDMI port with a set of M/M DVI-HDMI adapters or in my case, cables that I unfortunately could not find on Monoprice.com. I "programmed" the DVI Doctor while plugged into the selected HDMI input port on an AV-receiver with the display device turned on and connected to the HDMI output port. The Mac mini now ALWAYS sees the main display (appears as TX-SR606) as well as HDMI audio out (appears as TX-SR606), whether or not the input is selected on the receiver or even if it is turned off. As a result, OS X and Plex do not default to Internal Speakers, and my display resolution settings stay put. While I wish OS X would solve this issue on it's own, this solution is so effing awesome I just had to write a review of the DVI Doctor.
Works perfectly with my older Mac Mini which has a DVI jack and my Panasonic LCD TV which has HDMI inputs. With this device the Mini "thinks" the TV is always on and connected. Makes it much easier to use screen sharing or remote desktop when the TV is not connected to the Mini. Set it and forget it!