Trying to Mirror my desktop?

Question

Hello have a 24inch and just bought adapter "mini dvi to dvi" and then bought "hdmi to dvi" ! I tried to do this and getting frustrated sound wont work on tv... And cant get the resolution to match, wont play full screen??????
I have a 32" Vizio lcd hdtv 720P
Should I just do dvi to dvi???
Please help me out guys tell me the trick

Answer 1

Hi dohcguy
The iMac's mini-DVI output does not support audio, you need to run a parallel audio cable to the TV. To do this you will need a 3.5mm Stereo to RCA adapter (like the one in the link below) and RCA cables to go from the iMac's output jack to the set's input.
http://www.nextag.com/Cables-to-Go-Mini-87727346/prices-html?nxtg=10c4e0a24051e- A3F9D6FEEE79567F
When the computer is mirroring video, it tries to synchronize the resolution of the built-in and external displays. If they can't be matched, the computer will change the resolution of both screens to the highest common resolution which may cause areas of the built-in display to be blacked out. Or worse if you select the proper resolutions for one, the other is so far off it's nearly unusable.
http://docs.info.apple.com/article.html?artnum=303086
With that setup you are better off using Extended desktop mode and setting each display to its native resolution. Then when you want to watch say a DVD movie drag the DVD Viewer panel to the TV display and select full screen. Or if you wish to show say an iPhoto slideshow on the TV drag the iPhoto window to the TV display and play it there. Using Extended Mode will allow you to use both displays at the same time to do two different things.
Tip: In the Displays Preference ✓ the box for "Show displays in the menu bar" this will give you a (display icon) up on your menu bar for quick access to display settings.
Dennis