do you perhaps need to change the refreh rate to one supported by your monitor?
(doubt this, if so, it should display 'input out of range' but you can try)
also, have you tried testing with another DVI adaptor and/or cable?
also, do you need to enable the external display in system settings?
just some guesswork here for lack of being a mac user
hth
ecke

2010/12/9 Rick Womer <[email protected]>:
> I did.  No difference.
>
> http://photo.net/photos/RickW
>
>
> --- On Wed, 12/8/10, John Mullan <[email protected]> wrote:
>
>> From: John Mullan <[email protected]>
>> Subject: Re: Help needed for MacBook Pro-Dell Monitor connection...
>> To: "Pentax-Discuss Mail List" <[email protected]>
>> Date: Wednesday, December 8, 2010, 10:21 PM
>> I don't know if it makes a difference
>> on a Mac, try having the monitor connected and turned on
>> before turning the Mac on.
>>
>> jm
>>
>> -----Original Message----- From: Rick Womer
>> Sent: Wednesday, December 08, 2010 10:13 PM
>> To: Pentax List
>> Subject: Help needed for MacBook Pro-Dell Monitor
>> connection...
>>
>> ...and for my blood pressure!
>>
>> I set up a Dell U2410 monitor and connected it to my MBP
>> via the mini display port and DVI adapter.  My Dell
>> 2408 monitor at work does very nicely this way.
>>
>> No dice.  The monitor claims it's not getting a
>> signal, but when I ask it to find a signal it says it's
>> getting one through the DVI port.  Clicking "detect
>> displays" in System Prefs/Displays doesn't show me the Dell
>> monitor, though.
>>
>> Given a choice between a skunk run over by an 18-wheeler on
>> a hot summer day and Dell customer service, I'll take the
>> skunk.
>>
>> Can anyone provide some advice?
>>
>> Rick
>>
>> http://photo.net/photos/RickW
>>
>>
>>
>>
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