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Mac mini won't detect second dell display

 
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skythedirector
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PostPosted: Mon Oct 21, 2013 7:44 pm    Post subject: Mac mini won't detect second dell display Reply with quote

I have a Mid 2011 Mac mini server - OS X 10.8.5

My two dell monitors are the E2210H & E2211H (which I believe are both 24", maybe 27")

I have two adapters, one is DVI-D -> HDMI, the other is DVI-D -> Thunderbolts. I can make either adapter work with the E2210H, but in my Settings->Displays, it won't "detect" the second monitor, the E2211H, regardless of which adapter is connected to it.

The previous owner had both screens working, which leads me to believe I simply need to install a driver, however, all of the ones I have tried are unsuccessful. This, and the fact both adapters work with the E2210H, also leads me to believe I don't need to purchase any new pieces.

Does anyone have any suggestions?
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Cypher
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PostPosted: Tue Oct 22, 2013 2:04 am    Post subject: Reply with quote

You haven't mentioned if the second monitor will work on its own ?

I'd try removing the working one and just setting up the system with the second one as the primary. If it works then its not a driver issue or monitor problem.

Do you have another system to try the monitor on first ?
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skythedirector
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PostPosted: Wed Oct 23, 2013 2:07 pm    Post subject: Reply with quote

Good call, I cannot get the E2211H to work on its own with any adapter configuration.

It receives power, but it says "message - there is no signal coming from your computer"

does this help diagnose the problem?
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Cypher
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PostPosted: Wed Oct 23, 2013 2:09 pm    Post subject: Reply with quote

It sounds like a problem with the monitor rather than your Mini.

The leads / adaptors should be ok as they work well on your other monitor and given they are both dell monitors its unlikely the lead is an incorrect type.

Do you have access to another computer you could test the monitor on ?
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skythedirector
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PostPosted: Wed Oct 23, 2013 2:33 pm    Post subject: Reply with quote

Yes, I just attempted to connect the '11 as another display for my MacBook pro, and it was unsuccessful.
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PostPosted: Wed Oct 23, 2013 3:46 pm    Post subject: Reply with quote

On your monitor you should be able to select which input you want to use. I think if you go into the MENU you should have an option for Input Source.
In there you should be able to select AUTO, VGA or DVI.

Just check its not set to VGA. Selecting Auto or DVI should enable it to switch to the DVI input. I'd stick it to DVI and then double check everything.

BTW I looked up both your monitors and they are both 21.5" models.
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skythedirector
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PostPosted: Wed Oct 23, 2013 4:09 pm    Post subject: Reply with quote

haha, I certainly over-estimated their size.

And, this was one of the first things I tried.

Both "DVI-D" and "Auto Select" fail.
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PostPosted: Wed Oct 23, 2013 4:16 pm    Post subject: Reply with quote

I thought it might be worth a try incase it was stuck on VGA mode and you hadn't spotted you could select the input.

I'm not sure what else you can try now as it all seems to be pointing to a fault monitor.
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