I have just bought a used Dell Ultrasharp 3007 30 inch monitor, I connected it to a G5 quadcore MAC computer with an NVIDIA 6600 video card, I have two DVI video ports, on one port the display can only be set on a maximum resolution of 1080X800, while when inserted on the other DVI port the display selector can show the various resolution options up to 2560 x 1600, but when any hiigher resolution than 1080X800 is selected the display turns pink with vertical stripes. I tried to connect it to my Mac laptop which has a hi res of 1920X1200 and the same thing happens to the Dell display, turns pink and with stripes and nothing on the display is visible. What could the problem be? Thanks

SOURCE: False color with Dell E151FPp and Mac Mini

a big issue with this..does the mac mini have the drivers for that monitor? only one way to find out..

www.mac.com has support and drivers, no?

SOURCE: Dell 2407WFP Monitor losing signal and having colored line artifacts

To your problem number 1:

I would check to see what the refresh rate is on your main monitor. Especially after waking the monitor from sleep, Windows tend to forget the refresh rate settings on secondary monitor and set it to the same as your main monitor. If your main monitor is set at 75hz or something, it could cause the secondary monitor to display the "out of range" message. When you reset the "extend my desktop to this monitor" setting, it probably resets the refresh rate to 60hz again.

This can sometime be remedied by checking to see if the monitor drivers are installed correctly. A lot of times the video card driver also gets in the way. I've had a lot of experiences with ATI drivers behaving very sporadically with multi-monitor setups, where they will consistently change to "plug-n-play monitor" and thus reverting any custom setting I have.

As to your problem #2:

I've had a fair bit of experience with this as well. The fact that the line shows the same way regardless of the monitor's own tilting orientation, means the error is probably coming from the video card signal rather than the LCD panel itself. This usually is a foresight of a nVidia card that's about to break.

I've went through many, many nVidia video cards over the years. They all inevitably break over time, probably because nVidia relies strictly on third party vendors... and to stay price competitive the third party vendors cut corners wherever they can. I always get the same horizontal line error over time as you described here.

The only way to know for sure, is to get a replacement video card, borrow one from a friend if you can, and see if the same problem still comes up. It's very possible for this to show up on only one of your two monitors. Try switching the monitor output as well, to see if the line now shows up on the other monitor instead.

SOURCE: can not select dvi input 2.

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