Dual DVI Monitor KVM

Hi, I like to know if there is any one have
experience using a dual DVI monitor kvm switch with
Mac Pro successfully. I own a 'Uniclass' 2-port dual
dvi kvm, so I can share the dual monitor with another
Linux box. However, it works on the Linux box, but
when I tried to switch to Mac Pro, all I can see it
works just in the beginning before the OS X load,
that is the grey apple and small spinning circle on
primary monitor, then the monitor lost the signal.
If you have successful story, can you let me know
which brand of kvm you are using? Thanks in
advance.
I'm using a RATOC Systems switch with mine. It supports
dual monitors but I only have one monitor so i only use it
like that. The model I have doesn't seem to be available
in the USA. Only Japan where I live. Here's a analogue
switch that they make however. Two of these would probably
work if you don't mind going throught the analogue 15pin
conversion.
http://web1.ratocsystems.com/english/products/subpages/RS-210c.html
I guess since that page is one of the few offerend in English
that it's available in the USA.
My RATOC KVM is dual monitor / KB / Mouse / Line-in / Line-out
for 4 PCs and cost about $150. Switchable either by a button
on the KVM Box or by a KB HotKey sequence. Mine is made
for PCs but it's working fine with the MacPro.

Similar Messages

Video drivers issue (dual DVI monitors off bay :: one black and white and one color)

Hello,
I have tried everything to try to make these two monitors color. They are both relatively new Dell monitors. Both are DVI, both are connected to the latest Lenovo bay for my T430 laptop. Both worked fine after I initially installed both video drivers (Intel HD Graphics Driver for Windows 7 [64-bit]) and NVIDIA Optimus Display Driver for Windows 7 [64-bit]). Then out of nowhere one of them (Dell 1) decides it wants to be seen in black and white! I initially thought it was the monitor itself, but when swapping monitors (Dell 1, Dell 2) the other monitor (Dell 2) went black and white when plugged into the DVI formerly used by the Dell 1 monitor. Ok, so now it must be the DVI ports on the bay station (Lenovo) right? Nope. I had a tech bring me a second, brand new bay (identical). Same issue! So this leads me to the video drivers...
Does anyone have any idea. I disabled each driver and reenabled each to no avail. The drivers are the latest drivers downloaded directly from Lenovo's site. Checked the driver settings/monitor setting using both Windows 7 Professional and Nvidia to see if anything stood out. Nothing.
Any help would certainly be appreciated. Thank you in advance! :~)

I got a new laptop and when I plugged it into my docking station the external monitors were all in black & white. My old computer still worked fine without changing any settings on the monitors. I found that I needed to go into Control Panel \ NVidia Control Panel \ Display \ Adjust Desktop Color Settings, then select the monitor I wanted to adjust, then set the slider up for Digital Vibrance. For some reason on the new laptop the NVidia settings defaulted to 0 for this.

I want to run dual DVI monitors with my 8800GT wth a 26" and 22" LCD's

Today, my 26" LCD arrives. My 24" goes upstairs and the 22" LCD comes downstairs to my office. I want the 26" to be my main monitor and the 22" to be my web browsing monitor for when I'm editing photos or playing games on the 26" Things like managing my windows media player via the 22" would be nice. Nvidia has support for dual monitors in thier latest video drivers. My question is wheather I lose video processng power by running two monitors. I have have Vista 64 bit and 8GB of ram to support my system. Some suggest getting a second video card, but the 8800gt is already powerful enough for me.
What do I do and what will be the best setup for my system

Try it and see what the results are. You are going to get a perfomance hit as the VGA is now doing double duty--not sure how much--testing will tell you. What kind of budget do you have?

Dual DVI Monitors at Aluminum MacBook 13"

Hi,
I want to buy a 24-inch display and I am wondering if I can use it with this setup:
1.
Macbook 5,1 (Aluminum, late 2008)
with NVIDIA GeForce 9400M
and Mini DisplayPort
and Mini DisplayPort to DVI Adapter
2.
ViewSonic 20-inch with DVI-D input 1600x1200@60Hz
3.
Some 24-inch with 1920x1200
Do I need another Adapter to use both Displays, the 24-inch and the 20-inch?
Do I need another Adapter to use only the 24-inch, without the 20-inch?
What ports would be best for the yet to be bought 24-inch? DisplayPort?
Thanks in advance for your replies!

You don't need Apple's dual-link DVI adapter, in fact I would avoid that adapter unless you really need it (because of its cost and for compatibility reasons). Since all of the displays you plan on connecting to run at 1920x1200 or less you only need standard (single-link) DVI. Dual-link doesn't allow you to connect simultaneously to two displays, it just supports higher resolutions (anything beyond 1920x1200).
Here is a link that describes the differences between single-link and dual-link DVI:
http://www.datapro.net/techinfo/dvi_info.html
If you need to drive two external displays simultaneously you probably want one of the third-party dual-head adapters. Here is a link to one such product:
http://www.matrox.com/graphics/en/products/gxm/dh2go/
There are also USB-based display drivers (as the previous post noted), but you may find the performance of those products somewhat lacking.

Help Connect my Mid-2009 Macbook Pro to my new YAMAKASI CATLEAP Q270 SE 27" LED 2560X1440 WQHD DVI-D Dual Computer Monitor

Hi,
I am trying to connect my Mid-2009 Macbook Pro to my new YAMAKASI CATLEAP Q270 SE 27" LED 2560X1440 WQHD DVI-D Dual Computer Monitor. I am not having a lot of luck.
My machine:
OS: Mac OS X Lion 10.7.4 (11E53)
Graphics Card: NVIDIA GeForce 9400M 256 MB
Processor: 2.53 GHz Intel Core 2 Duo
I am trying to connect it using the:
Mini DisplayPort to Dual-Link DVI Adapter
DVD-D HDMI cable
YAMAKASI CATLEAP Q270 SE 27" LED 2560X1440 WQHD DVI-D Dual
(http://www.ebay.com/itm/150788045871?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m149 7.l2649#ht_16597wt_877)
Here is what is happening.
1. I connect the Mini DisplayPort to Dual-Link DVI Adapter + HDMI Cable to Monitor
2. Main monitor powers up like it is trying to display
3. Laptop Monitor displays second part of desktop
4. I can never get the Yamakasi to display a picture
Here is what I have tried:
1. Different HDMI-D cables
2. ATLONA AT-DP400 Dual Link DVI to Mini Display Port Converter
3. Zapping the P-Ram
4. Powering monitor with laptop closed
5. Forcing the system to see the second monitor
The nearest I can figure:
- The laptop does see the catsleap (it displays resolutions I can set it to)
I am completely stumped, I was hoping someone could advise me.
Thanks,
Don

Hey Kytarx,
I found the winning combination this weekend.
I tried:
- Apple Mini DisplayPort to Dual-Link DVI Adapter
- ATLONA AT-DP400 Dual Link DVI to Mini Display Port Converter
- Monoprice Mini DisplayPort | Thunderbolt® to HDMI®, DVI & DisplayPort Adapter
My experience:
- Altona didn't work at all, and their support claimed it would not.
- Monoprice didn't work to Dual DVI, it did work to HDMI (great price I wish it did)
- Apple Mini Displayport adapter did work, but would only work with certain USB + Display port combos.
The thing that was tripping me up was that two of the Dual DVI-D cords were bad. Once I found the working cord, it was easier to find the working adapter. The experience I did find to be a frustrating / expensive one. However, the Monitor itself is beautiful.
Hopefully this helps someone else..
Don

What adaptor do I need to connect from mini display port to a dvi monitor

I want to connect a 2nd monitor to my mac mini via the mini display port, will the Apple adator do this ok or will I need an active adaptor

I had trouble with different Mini DisplayPort to DVI adapters, including a couple of Apple branded ones.
When I mentioned the problem to the Apple rep. at Fry's. He walked straight over to the rack, handed me a > Kanex Mini DisplayPort to DVI-D Adaper grined and said, I've never had one of these baby's come back.
After that my 2010 Mac Mini has been very stable running Dual 21.5" Samsung DVI monitors. One in on the Apple Supplied HDMI to DVI adapter, the other now on the Kanex Adapter has been rock solid for over a year.

Does Mac Mini's HDMI-to-DVI cable support analog DVI monitors?

The Apple website shows that the new (late 2012) Mac Mini comes with an HDMI-to-DVI adapter cable in the box :-)
The DVI video connector standard supports both analog and digital video signal modes, but not all models support both modes.
I have an old PC monitor with a DVI connector, which is probably analog only. Will this work with the new (late 2012) Mac Mini?
In other words: does Apple's HDMI-to-DVI adapter cable support all DVI monitors, or only those with a digital input?
Many thanks!
- Martin

Your right about the DVI standard support both analogue and digital. The three types are
DVI-A (analogue only)
DVI-D (digital only)
DVI-I (supports both)
In this case the HDMI to DVI adaptor will only support digital DVI. This is because the HDMI port only supports digital.
Generally monitors with a DVI port support digital DVI, if you compare the socket and pins layout on the monitor to the one on the Mac adaptor if they are the same layout then that should indicate the monitor indeed supports digital DVI.
Note: The maximum resolution supported by the Macs HDMI port is 1920x1200, if your monitor supports a higher resolution then you should get a Mini Displayport to DVI adaptor or if needed a Mini Displayport to Dual Link DVI adaptor (for the highest resolutions).
The following may help http://en.wikipedia.org/wiki/Digital_Visual_Interface

Don't setup an XServe with a DVI monitor if you intend to use a VGA monitor

Hi Forum Folks.
A bit of a "gotcha" to warn others about, with XServes, and VGA vs DVI monitors.
We Recently re-setup (erase + install a fresh OS) on a 2008 XServe Xeon, with a DVI (Digital) monitor connected. All worked fine, and we went to move the server into the production environment.
However, when we moved + plugged the XServe into it's new home (a rack), it would not boot (flashing question mark).
Moving the Xserve out of the rack, and back to it's work-bench setup, made it work again.
We traced the problem to the monitor we used... If we hooked up a digital (DVI) monitor, the XServe worked fine (with the mini DVI to DVI connector). If we hooked up a VGA monitor (with a mini DVI to VGA connector) that's when the XServe wouldn't boot. We tried a variety of common techniques to solve the problem, including resetting various settings, re-installing Mac OS X 10.5.6 Server over the top etc.
The solution:
(Although I'm sure there are simpler solutions):
We setup the server again (from scratch) using the VGA monitor combination from the very start of the setup, and all worked fine (on VGA or DVI monitors). The server is happily in production now, with it's VGA output.
So the lesson here: Always set up your XServe using a VGA-based monitor in the first instance.
Hope this helps someone else.
Cheers,
Derek

So the lesson here: Always set up your XServe using a VGA-based monitor in the first instance.
... or don't use a monitor at all
I don't think I've ever used a monitor when setting up a server - maybe used a KVM if I've re-installed or upgraded the OS, but for the main part every install I do is run remotely.
Still it's good to know, especially since it defies logic.

New X220 support dual external monitors with mini dock plus?

Hi,
I need to purchase a new Lenovo laptop in urgent.
But we need to make sure it support dual display to two external monitors. (VGA)
My question is:
(1) we plan to purchase with mini dock plus, it have two HDMI port.
can it support two external monitors for Intel HD Graphics 3000?
( we will close the Lids when use in dual external monitors)
(2) Can i use DVI to VGA convertor convert to VGA for supporting two external monitors
(3) what is the weight difference for X220 SATA HDD and SSD HDD?
Please kindly help in urgent!
Rgds,
Sun
Solved!
Go to Solution.

Hi
Yes, it work.
It must need a Display port to VGA (F) convertor.
Thank you.
Cheers
Sun

Dual External Monitors with 15" MacBook Pro (Late 2011)

I'm looking for suggestions for using dual external monitors with new MacBook Pro's. The company I work for has started to puchase these for certain employees and we are looking for any good suggestions.
It appears that the display/thunderbolt port should be able to support many devices but I have not seen any way to hook up multiple displays. The idea is that these employees would be working with the macbook pro screen closed while in the office and use dual displays. The only option that I can find is to use a usb device to output video to a second display. I don't really like that because my experience with these devices is that they usally present a display lag and I know our graphic designers would never go for that.
One employee suggested that he use the VGA adapter and then get a VGA splitter. I'm not exacty certain that would work though. Wouldn't that just mirror the display on two screens instead of allowing an extended desktop? Also it looks like expensive Apple displays have ports so that you can daisy chain thunderbolt devices out of those monitors but this company will not go for the cost of those displays.
Am I missing anything? Any suggestions would be helpful.
Thanks!

Look into the Matrox Dualhead2Go DP Edition. If it works with Thunderbolt Macs, it will support two identical 1920 x 1080 DVI monitors as one extended desktop. Verify with Matrox that it is Thunderbolt-compatible and will suit your purposes before ordering.

Dual DVI video card

Have a P7-1280t - i5-2320 QUAD 3.0GHZ 6GB
Would like to have a dual DVI setup since I have two monitors. I had a Nvidia Qaudro card laying around...tried it but it's looking for that additional power source for the card and the powersupply doesn't have it.
What card is compatible with my new Desktop
Thanks

You could just add an adapter, though not everyone is happy with that, for your 2nd port on the GT120.
Could wait for Nvidia eVGA GTX 285 Mac Edition next month.
http://eshop.macsales.com/item/EGVA/01GP31080TR/
There is/was and should be 8800GT with nice specs and dual monitor support.
Barefeats is a great resource of tests and benchmarks.
This gives a good idea of what cards and what to expect:
http://barefeats.com/nehal10.html
Some discussions of 4870, GTX285 etc.
http://forums.macrumors.com/showthread.php?t=705291
http://forums.macrumors.com/showthread.php?p=7546575#post7546575
http://forums.macrumors.com/showthread.php?t=694042
And some comments on the FX 4800 and using in Windows vs OS X:
http://forums.macrumors.com/showthread.php?t=705457

Dual external monitor setup?

I'd like to use dual external monitors, ideally also plus the laptop screen for a total of 3 monitors, with my new 5th gen 17" MBP. I hear that USB-to-DVI options out there due have very poor poor refresh rates and picture quality. I'd like to use the ViDock2 expresscard/34 setup, which is a full fledged external video card, http://www.villagetronic.com/vidock2/index.html, but I understand it only works with MBP gens 1-4. Anybody know any other multi-monitor solutions that work with gen 5, other than poor quality USB options? Anybody know why the ViDock2 doesn't work with the MBP 5th gen?

Check out the Matrox dual head and triple head units, marc.
http://www.matrox.com/graphics/en/products/gxm/
My suspicion is that you will need the more expensive "DP" versions to operate effectively with the new model.
Cheers
Rod

Dual-DVI Adapter and Windows 7

Just under a month ago we have purchased a new mac mini that's running Windows 7. Mac mini is now connected to a 29" UltraWide AOC Display using a Dual-DVI link adapter. Everything is working okay in terms of resolution, but the screen cannot detect input after Windows 7 boot screen.
When you first switch on the mac, you get the Windows start up and then it goes to a black screen. The monitor displays no signal on DVI and goes to standby. We have to unplug the DVI adapter from the thunderbolt port and plug it back in, for the monitor to come back on.
Any ideas what could be wrong? Do we need a special driver for the adapter?

As previously stated mount # and chroot in the install grub to /dev/sda mbr - nothing will be lost from your hdd and grub will boot in preference to winloader
Use the the beginners guide for the commands and adapt for your system
https://wiki.archlinux.org/index.php/Be … ase_system
https://wiki.archlinux.org/index.php/Be … bootloader
... and always install windows first - if you did a clean windows install it may be best to install all the service packs / major updates before bothering to reinstate grub as you may find you need to repeat the process anyway

Dual 30" monitors - - best video card?

I’m a PC user - - please don’t throw rocks (or apples) at me - - and I want to replace my present dual 19” monitors with two Apple 30” ACDs - - side by side for a 5120x1600 desktop. My Windows box will accept a PCI-e x16 video card.
I’ve been considering either the nVidia Quadro FX 3500 or the ATI FireGL V7200.
Doe anybody have experience with either or both of these cards? Any suggestions as to other cards which will support two monitors that each require a dual-link DVI port?
Thanks,
-Nick

it would seem to me that the obvious answer is one of the new NVidia 8800GTX cards. DX10 support, Open GL2.0, HDCP, some even have out of the box water cooling fittings if you need a cool / silent machine.
the cards you mentined are workstation class cards, which do have driver support for certain applications, but my take on workstation class cards is that they do not necessarily have the power of the new gaming cards (gaming is NVidia and ATI's focus, because of demand) and are much more expensive. I think that the driver support that is enjoyed with CAD/CAM products is opposite with general purpose software.
with the cost of the 8800GTX, it is almost a free experiment given the cost of FX cards to see if it works for you. my one suspicion is the immature drivers currently available for 8800 cards. that should be resolved pretty quickly, however.

2 DVI Monitors and HDMI TV

Hi there,
I recently purchased a new 6 core mac pro with the standard Radeon 5770 card. I'd like to be able to hook up my two DVI monitors (Dell 2405FPW and SP2309W) as well as a Panasonic HDMI 32inch TV to it. I was wondering if this was possible.
Had a live chat with "TECH SUPPORT" at monoprice.com, and they suggested I purchase the Mini DisplayPort to Dual-Link DVI Adapter, as well as the Mini DisplayPort to HDMI (with digital audio) adapter. I purchased the Apple version of the Dual Link adapter and monoprice's HDMI adapter.
I hooked them all up, but am not able to use all three monitors simultaneously. I've read apple's support pages and have seen how you may need TWO Dual Link adapters for DVI displays. but...then how do I get the HDMI tv to work?
Has anyone been able to do this.
Thanks in advance.

<http://support.apple.com/kb/HT4279>
When using three displays with one card, all Mini DisplayPort adapters must be the active type. All dual-link DVI, VGA, and some single-link DVI adapters are active, but there don't seem to be any active Mini DisplayPort to HDMI adapters.
You can use a DVI to HDMI adapter with the DVI port on the card, or with an active Mini DisplayPort to DVI adapter, but that won't provide audio over the HDMI link because there is no audio on DVI. You can use a separate cable for audio, or use a special DVI to HDMI adapter that can add the audio from the Mac Pro's optical output to the HDMI link:
<http://www.apogeeinc.net/products/item.aspx?item=2745>

Dual DVI Monitor KVM

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