[TriLUG] Display adapter and cable to monitor

[bak via TriLUG]

Apple sells a DisplayPort —> Dual-Link DVI adapter. Spendy but it works; I used one with a 1440p monitor for a couple years.

http://www.apple.com/shop/product/MB571LL/A/mini-displayport-to-dual-link-dvi-adapter <http://www.apple.com/shop/product/MB571LL/A/mini-displayport-to-dual-link-dvi-adapter>

—bak

> On Feb 2, 2017, at 08:03, Wes Garrison via TriLUG <trilug at trilug.org> wrote:
> 
> Most computer HDMI ports and single-link DVI only support up to 1900x1200.
> 
> Dual-link DVI <https://en.wikipedia.org/wiki/Digital_Visual_Interface>
> supports up to 2560x1600 (which includes 2560x1440).
> 
> DVI on most Macs that I've seen are single-link, so don't go that way.
> 
> You'll have to do either DisplayPort on both ends, or *TWO* HDMI cables and
> hope your distribution supports link aggregation.
> 
> That's why there's 2 ports on the monitor.
> 
> What model is this monitor?  I'm surprised it doesn't have Dual-link DVI.
> 
> -Wes
> 
> _________________________________
> Wesley S. Garrison
> Network Engineer
> Xitech Communications, Inc.
> phone:  (919) 260-0803
> fax:       (919) 932-5051
> __________________________________
> "Lead us not into temptation, but deliver us from email."
> 
> On Thu, Feb 2, 2017 at 6:26 AM, Ron Kelley via TriLUG <trilug at trilug.org>
> wrote:
> 
>> Brian,
>> 
>> Specifically, what video card is this?  Wikipedia seems to indicate the
>> video card is 2009 vintage based on the “Cedar” chipset info.  Is that
>> correct?  If so, you might be better off getting something like an NVidia
>> GeForce 730 fan-less card with HDMI for about $60 (https://www.newegg.com/
>> Product/Product.aspx?Item=1FT-001K-00003&cm_re=nvidia_730-_-
>> 1FT-001K-00003-_-Product).  Then, you can use your HDMI-to-HDMI cable at
>> 2560x1440.  If you need more graphics horsepower, you can opt for the
>> 750-Ti card for about $150.
>> 
>> I have a spare ATI card sitting on the shelf with a HDMI output.  If you
>> live close to apex, you can stop by and borrow the card to see if that
>> fixes your problem.
>> 
>> -Ron
>> 
>> 
>> 
>> 
>> On Feb 2, 2017, at 1:20 AM, Brian McCullough via TriLUG <trilug at trilug.org>
>> wrote:
>> 
>> I have been bothered for a while, ever since I bought and installed a
>> new 32-inch HP monitor, because it only seems to do 1920x1080, rather
>> than the native 2560x1440.
>> 
>> I have been doing research tonight, and find that while X.0.log shows a
>> lot of information about the card and all, it is very informative about
>> the mode lines.  Incidentally, this is a Radeon Cedar-type board.
>> 
>> At first, it shows a list of mode lines that include, and seem to
>> prefer, 2560x1440, but then say that the HDMI output is active, and it
>> will only deliver 1920x1080.
>> 
>> Apparently, the DVI output is the desired one.
>> 
>> OK, no problem.  I will get a DVI cable an attach that.
>> 
>> Oops!   The card on the machine talks DVI, but this new monitor only has
>> two HDMI connectors and a DisplayPort connector.
>> 
>> OK, so back to the research.
>> 
>> 
>> I find that if I want to plug a cable into my Apple laptop with a
>> DisplayPort connector and then into my monitor with a DVI connector, no
>> problem.  HOWEVER, I want the connection to go the other way.  Is this
>> possible?  The research says: probably not.  EXCEPT that the maximum
>> resolution that the adaptors that I have found is 1920x1080.
>> 
>> NO improvement, even if the cable works the other way.
>> 
>> 
>> More research.
>> 
>> 
>> MAYBE I found an adapter that is designed for DVI on computer, DP on
>> monitor.
>> 
>> But, again, the maximum resolution is 1920x1080.
>> 
>> 
>> 
>> SOoooo.  The final question is, is there such a thing as a DVI to DP
>> adapter that will handle the native resolution of this monitor? Would a
>> different video card improve the situation?
>> 
>> Is there another solution altogether?
>> 
>> 
>> 
>> Thank you,
>> Brian
>> 
>> 
>> --
>> This message was sent to: Ron Kelley <rkelleyrtp at gmail.com>
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>> 
>> --
>> This message was sent to: Wes <wes at xitechusa.com>
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>> address.
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>> Welcome to TriLUG: http://trilug.org/welcome
>> 
> -- 
> This message was sent to: bak at picklefactory.org <bak at picklefactory.org>
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