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Solve a Mac Mini invalid resolution issue after install
Authored by: David Allen on Sep 07, '09 06:38:16AM

I had a similar issue after installing Snow Leopard on my '09 Mac mini. After the new OS booted the screen resolution was wrong so I went to System Prefs/Displays and selected what I thought I remembered was the display for my LG HDTV. WRONG! Black display with the LG's display flashing Invalid Signal.

I brain stormed for a moment and thought, aha, Screen Sharing from the iMac used by younger household members. It was a no go. It would not Screen Share. Then I remembered that I had allowed the iMac to Screen Share with the Mac mini, but not the Mac mini with the iMac. Why would I want the young ones spying on me?

I could connect with the mini, just not screen share, but how could that help me? Then I thought, there has to be a system preference for Screen Sharing. It is ~Library/Preferences/ I experimented with the iMac. Sure enough, if I disabled Screen Sharing and Trashed that file, that file did not return on a restart. But if I enabled Screen Sharing, that file was created.

So I connected with the mini from the iMac and dropped that file in the same location on the mini and did a hard shutdown and then restarted. As I did it I thought, "Dios mio, this will either really screw the pooch, or this will be my miracle idea!" On yje mini's reboot, I could Screen Share with the mini from the iMac and I resolved the Display Resolution in about 15 seconds.

David Austin Allen
Monterrey, NL, MX

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Solve a Mac Mini invalid resolution issue after install
Authored by: mikezang on May 23, '10 05:10:59AM

Hi, all experts

I am a newbie for Mac, I have a lot of years experience about Windows. I bought a Mac mini (later 2009) yesterday and connect it to my Sharp AQUOS TV using a Mini DisplayPort + USB sound to HDMI adapter with a HDMI cable.

After I boot my mini, the TV shows "Invalid video signal, check input signal" then black screen.

I guess the reason might be my AQUOS only supports 1080i (not 1080p) and Mac mini set default HDMI to 1080p automatically.

Then I have only a USB wireless keyboard, so that I can boot in safe mode, and my AQUOS have 2 HDMI, one d4,one s2 and one VGA ports, the VGA and mini plug are used by my ThinkPad, so I have to use other ports, what can I do?

Yesterday was a bad night for my first Mac night!

Please help me, all of you , Mac experts!

By the way, I went to Apple Store, they didn't have AQUOS and not solve my problem, that is very sad, now my Mac mini is just the box!

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