N570GTX M2D12D5 Dual monitor not recognized

N570GTX M2D12D5
Windows 7 64 bit
Two monitors connected to DVI outputs
Second monitor not recognized by Windows 7 or NVIDIA Control Panel
Not found by Rigorous Display Detection either.
Does something else have to be set to get this card to enable 2 displays?
MMc

remove current vga drivers in safe mode with >>Driver Sweeper<<
then install 270.51 from nvidia web page and see how its goes

Similar Messages

Monitor not recognized by Mac anymore?????

Hi
This is big and what is APPLE doing to solve this issue??
I just copy some posts from the forum to show how big this issue is, there is 8 more pages with the same problem, and i am one of them!!!!
HELP!!!! WE ARE FREAKING OUT HERE AND NEED A SOLUTION!!!
Yes, me. I have an HP w2207 who worked with my 3 y.o. old MacBook (OS 10.4.??) via the DVI-port flawlessly. Then bought a brandnew MacBook Pro with 10.6.X and the external monitor stopped being recognized. It works now that I have changed the connection to the VGA-port of the monitor (and bought yet another adapter for the MacBook Pro) but the quality is not what I'm used to.
MacBook Pro Mac OS X (10.6.1) HP w2207 external monitor
MattLTH
Posts: 15
From: Salt Lake City, UT USA
Registered: Dec 4, 2007
Re: External monitor not recognized!
Posted: Dec 1, 2009 1:29 PM in response to: cruzcj
Reply Email
Yes. I've tried 7 different Macs including a MacBook Pro with Snow Leopard (10.6.2) and my external monitor doesn't work with it either.
For me here's a recap:
Installed SL on a Mac Pro connected to a 23" Cinema via DVI and Olevia 537 via HDMI Input #1 and now that input no longer works with Mac computers.
Reinstalled 10.5.8 on the Mac Pro and HDMI #1 still didn't work, so I plugged the Mac into HDMI #2 and it worked.
Reinstalled SL on the Mac Pro connected to a 23" Cinema via DVI and Olevia 537 via HDMI Input #2 and now that input no longer works with Mac computers.
Since then, every device (PCs, DVD Players, Video Cameras, etc...) I connect to either of the HDMI inputs work fine. However, neither HDMI input works with ANY of the 7 different Macs (regardless of OS version) I've tried, except for a 10-year-old G4 running Panther or Tiger.
The monitor had previously worked with the MacPro (HDMI input #1) and a G5 (HDMI input #2) for almost 2 years.
When I plug the MacPro into any other monitor via HDMI, it works fine. Same thing with the G5.
My theory is still that the installer for Snow Leopard somehow made my monitor's HDMI inputs incompatible with Macs. I'm so frustrated that I'm ready to buy a new monitor, but since there's no guarantee that a new monitor won't be adversely affected by Snow Leopard, I'm still dubious.
Matt
MacPro, MacBook Pro, PowerMac G5 Mac OS X (10.6.2)
Stephen Darling...
Posts: 59
From: London, UK
Registered: Sep 24, 2004
Re: External monitor not recognized!
Posted: Dec 5, 2009 8:22 AM in response to: Roger Kaufmann
Reply Email
Another "me too" post...
Not sure exactly when it stopped working (since I don't use it every day) but my Viewsonic VX2455wm stopped working with my MacBook recently too. Checked with another MacBook (six months newer than my Late 2006 model) and that exhibited the same problem. Both machines have fully patched Snow Leopard installs. Both started with Tiger. Mine is regularly connected to the external monitor, the other has never been connected. I'm connecting using a DVI cable and a mini-DVI-DVI adapter.
The monitor appears to work correctly. I've checked with a Windows laptop connected on the VGA port. I want to test with another DVI-enabled machine to see whether or not its the cable.
MacBook C2D 2Ghz Mac OS X (10.6.2) iPhone
cruzcj
Posts: 4
From: California
Registered: Nov 28, 2009
Re: External monitor not recognized!
Posted: Dec 13, 2009 10:38 PM in response to: Stephen Darling...
Reply Email
My wife's 15" MBP arrived on Wednesday. Connected it tonight to her new Dell 23" ST2310 via a MiniDisplayPort to VGA and it works fine.
MacBook Pro 15" 2.8GHz Mac OS X (10.6.2)
Gaston55
Posts: 4
From: Sweden
Registered: Dec 15, 2009
Re: External monitor not recognized!
Posted: Dec 15, 2009 12:06 AM in response to: Roger Kaufmann
Reply Email
Hi Guys
I have the same problem with my new Dell 2209WAf. It worked fine before i changed from L to SL.
I didn't know what happened so i have spend hours and hours to resolve the problem.
Hours with Mac support and friends didn't change anything, i still cant make my Dell to work, or show up in preferences. I am working as a photographer and this issue is a real problem.
I just heard from Mac Support that Apple is working on it.....well, doesn't help us with the problem today.
So Apple, DO SOMETHING ABOUT THIS! NOW! this problem should NEVER showed up, this is something you should have fixed before telling all the Macers to upgrade!!!
Macbook Pro Mac OS X (10.6.2)
RWildman465
Posts: 2
From: Illinois
Registered: Dec 16, 2009
Re: External monitor not recognized!
Posted: Dec 16, 2009 1:18 PM in response to: Gaston55
Reply Email
Experiencing the same issues. However, on bit different hardware.
I'm using the XLR8 ProView USB input devices. Using these devices on a mixture of 10.5.8 and 10.6.2 systems (2 MacBooks, 2 Mac Mini and 1 iMac).
I can confirm the following:
When attempting to mirror video, or extend the desktop, using a mini-DVI to S-Video/Composite device on OSX 10.6.2 no video is sent to the mini-DVI device (inputing into the XLR8).
When attempting to mirror video, or extend the desktop, using a mini-DVI to S-Video/Composite device on OSX 10.5.8 video is sent to the mini-DVI device (inputing into the XLR8).
Let me also state, that the mini-DVI port on the Mac Mini's do work. They have been connected to 19" monitors and working without issue. Today, the mini-DVI devices were replaced with minidisplay port devices, which are use in conjunction with the mini-DVI ports.
It would appear, in my case, that the problem is that the mini-DVI port on both the MacBook and Mac Mini, running 10.6.2, as a secondary display device is not operating properly.
iMac Mac OS X (10.6.2)
Todd Camp
Posts: 2
From: Chicago
Registered: Dec 19, 2009
Re: External monitor not recognized!
Posted: Dec 23, 2009 12:41 PM in response to: RWildman465
Reply Email
Same problems here. I reloaded OS 10.4.6 which is what shipped with my MBP1,2 17" 2.16 Intel Core Duo 2GB ram and after installing that, i was able to select 1920x1080 for my external HP w2338h, DVI-VGA, never been able to connect DVI-HDMI. On SL, the max rez I was able to "use" was 1600x1200 which looked horrible. So this leads me to suspect that this must be an issue with SL.
I spoke with Apple Tech support on Sat and was no help. The only suggestion was that I take my MBP and Monitor to the Apple Store. Those of you who are fortunate enough to live in Chicago in the winter, then you know that option really isn't that feasible, it is but just a giant pain.
Early 2006 MBP 17" Mac OS X (10.6.2)
Salm0n
Posts: 1
From: Minneapolis
Registered: Dec 27, 2009
Re: External monitor not recognized!
Posted: Dec 27, 2009 9:57 AM in response to: Todd Camp
Reply Email
I have an iMac 9,1 Intel Core 2 Duo that I bought last June. It came with Leopard, but I upgraded to Snow Leopard. Currently, it's running 10.6.2. My HP w2207 Widescreen monitor works perfectly with it using the DVI port on the HP and the mini-display (not mini-DVI) port on the iMac.
However, I just bought the top-of-the-line iMac 11,1 Intel Core i5 QuadCore three days ago and it crashes nearly every time that it wakes from "sleep" when the HP w2207 is connected to it. It doesn't even recognize that the w2207 is connected to it. Additionally, when the w2207 is connected, it (a) looks terrible - very dim and very granular, and (b) causes the iMac QuadCore to operate very sluggishly. When I disconnect the HP w2207, the iMac QuadCore is lightning-fast.
Much like my older iMac, the QuadCore is running 10.6.2 and I'm using the mini-display port.
iMac 11,1 & iMac 9,1 Mac OS X (10.6.2)
Marjorie Colletta
Posts: 20
Registered: Mar 17, 2005
Re: External monitor not recognized!
Posted: Jan 6, 2010 6:07 PM in response to: Roger Kaufmann
Reply Email
This is a Me too post, I have a MacBook and NEC Multisync Monitor that worked fine before I upgraded to 10.6.2. I've tried to get it to work without any luck. I've written NEC to see if they have a solution.
MacBook 2 GHz Intel Core 2 Duo Mac OS X (10.6.2)
davej147
Posts: 12
Registered: Jun 1, 2006
Re: External monitor not recognized!
Posted: Jan 11, 2010 6:24 AM in response to: Roger Kaufmann
Reply Email
Another me too post. I have a new 17" MacBook Pro with 10.6.2 installed. Trying to connect to an HPL2245wg - sometimes it works flawlessly - other times not at all. Some mornings I spend 30 -40 minutes rebooting, unplugging and plugging the monitor, Detecting Displays, changing the Graphics Card (Energy settings) - all to no avail. Very, very frustrating Apple - please figure out what is going on with this issue....and get it fixed!
17" MacBook Pro Mac OS X (10.6.2) Very happily gave all my XP-stuff away!
Anteck
Posts: 2
From: Australia
Registered: Sep 30, 2009
Re: External monitor not recognized!
Posted: Jan 20, 2010 2:31 PM in response to: Roger Kaufmann
Reply Email
Wow, me too. Did a minor software update (apple released it) last night, got on this morning and BANG - my main 24" Dell display is NOT working.
This is ******, apple have surely f**ked up here. It's never had a hitch, ever, since i bought it 9 months ago.
We are all reporting the same thing - software update, and then no working external display...
APPLE???
Macbook Pro 2.2 15" Mac OS X (10.6.2)
Zedog
Posts: 13
Registered: Aug 10, 2006
Re: External monitor not recognized!
Posted: Jan 20, 2010 2:59 PM in response to: Roger Kaufmann
Reply Email
I seem to have found a fix for myself. I was having terrible issues with the screen blinking and flickering constantly. I tried to reset the SMC with everything unplugged and the computer would not reboot at that point on it's own which led me eventually to reinstalling SL.
Reinstalling SL is quite painless actually as it installs on top of your profile. After reinstalling I ran software update which installs the cumulative upgrades. Now I usually don't have any problems but must follow the instructions to run in clamshell mode to the letter.
After a week of running in clamshell mode I started having an issue with the dock not lining up so I put the computer to sleep, disconnected the monitor and restarted with nothing connected. After that, followed the clamshell mode instructions again and have been working fine again all week.
I've also disabled my screen-saver, and deleted the windowserver preferences as part of my debug process but not sure if that has contributed to my new found stability.
http://support.apple.com/kb/HT3131
Mac OS X (10.6.2)
pragmaik
Posts: 2
From: Duisburg
Registered: Apr 16, 2008
Re: External monitor not recognized!
Posted: Jan 21, 2010 1:08 AM in response to: Roger Kaufmann
Reply Email
Me too. I have a MacBook Pro 2,2 running the latest Snow Leopard 10.6.2. After I have installed yesterday's security patch it does not recognize external displays on the DVI port any longer. Tried it with a 23" DELL at the office and a 23" Samsung at home. Both have worked without any problems for years.
I am curious to learn how this behavior is related to security...

Gaston,
This is not the correct Feedback venue for your issue.
Please select an appropriate product from those displayed HERE and use the corresponding form to communicate to the correct department.
ali b

External monitor not recognized (X200)

Hi,
I have an X200 with Vista
When I connect an external monitor (or projector) it is not recognized. Shift-F7 results in a message that no external monitor is detected. However, if I leave the monitor connected, put the system in standby and then resume, it recognizes the external display.
Any thoughts to how I can get it to recognize without this work-around? Thanks

I had the same problem. I think it's a vista device driver issue. Try this-
Power down your laptop. Plug in the external monitor. Boot the computer - it should default to the external monitor, and Windows should recognize it. Then, shut down normally.
Pull the monitor cable, boot your laptop regularly, reattach the cable, and give it a try.
It worked for me.

External LG monitor not recognized by MBP

I've been using an LG Flatron L22WTG external monitor with my MBP (purchased 2011) running 10.7.2. The monitor worked fine until recently and now is not recognized by the MBP and goes into "power saving mode". There is no response when I press "recognize monitors". Tried the settings for power saving and monitors. This issue is recent, but I don't know if it occured with my recent installation of the last Lion patch.

Me too, but my LG monitor just stopped working after I installed the recent "Thunderbolt Firmware Update".
Literally the monitor was working yesterday. This morning I installed the update and now it's broken. Great update.
Anyone have a fix?

Apple monitor not recognizing keyboard

My 7 day old Apple 23" monitor is not recognizing my 7 day old Apple keyboard (hardwired, not wireless). I am using a MacBook Air. All was fine until last night.
Suggestions?
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Elizabeth

Some similar things but not many. I have not changed anything in the computer. Update , I did borrow a VGA to VGA cable was able to get this to work. But for the life of me I cannot get a signal from the Displayport. Also I tried a Displayport to DVI-D cable with no results. I would like to use a digital signal rather than an analog. Maybe I will try to update my Bios.
Thanks for your reply. Anybody else had this problem?

Dual monitors not working in bootcamp?

Recently added 8 more gigs of ram, and after this my video driver shows a triangle with an ! under bootcamp running windows 7,
i have tried countless times to update the driver to no evail
even used the bootcamp drivers from the original discs to repair bootcamp and nothing has helped!!
what can i do?
before the memory upgrade the monitors worked fine under bootcamp, but now they only show 1 and will not show both!!
thanks!!
(possibly a windos 7 issues?)

The hatter wrote:
You realize you do need graphic driver, and Nvidia has Windows 7 (32/64), and ATI is suppose to have a universal driver. No mention of what your card is. And I would hope x64.
Good grief, but please a) don't use Apple drivers, b) always use the "troubleshoot compatibility" for any installer (control+click on the application) before running. Apple is treated as not supported and won't install (now) with build 7077 (after feedback finding it causes errors, love the way their feedback and testing really does work).
Boot Camp can 'doorstop' in some cases a good installation.
http://discussions.apple.com/thread.jspa?threadID=1866970&tstart=0
Use Driver Sweeper and then reinstall the latest compatible driver. And no, dual monitors does work.
mine is the ati radeon 2600 hd xt and it worked flawlessly up until about 2-4 days ago,
oh well, xp pro it is then,
i dont want the headache of dealing with windows 7 beta!
xp should be fine to use correct?
will there be any other steps i will need to take in order for everything to function together well?
thanks

S5610y monitor not recognized

Have a Slimline s5610y that the monitor is not recognized by the computer. I have tested monitor with another computer, monitor is good. I have tried another monitor with the s5610y and still not recognized. I have tried VGA and DVI, nothing works. I know hard drive comes on, I can hear it power up and go through the motions without capturing the monitor. Any suggestions?
Thanks in advance.
wpooh65

Hello wpooh65,
Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I understand that you have tried 2 monitors on your HP Pavilion Slimline s5610y Desktop PC and neither work, but they do work on another computer. If you see absolutely nothing from the computer when they are connected I think it would be best if you contacted HP technical support for repair options.
US support link to contact options for HP products purchased in the US.
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I would like to thank you for posting on the HP Forums. Have a great day!
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
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Find out a bit more about me by checking out my profile!
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Wacom intros5 and dual monitors not working

I know there are issues with Mavericks, dual monitors & USB, but I have a problem with my Intuos5 tablet: since installing Mavericks it no longer maps to both monitors. Changing settings under monitors and wacom sys prefs does not change anything. It will only map to monitor 1.
in fact mapping under the wacom sys prefs doesn't seem to work at all.
Any ideas other than going back to ML or waiting for a new driver?
Anyone seen behaviour like this?
Thanks

The hatter wrote:
You realize you do need graphic driver, and Nvidia has Windows 7 (32/64), and ATI is suppose to have a universal driver. No mention of what your card is. And I would hope x64.
Good grief, but please a) don't use Apple drivers, b) always use the "troubleshoot compatibility" for any installer (control+click on the application) before running. Apple is treated as not supported and won't install (now) with build 7077 (after feedback finding it causes errors, love the way their feedback and testing really does work).
Boot Camp can 'doorstop' in some cases a good installation.
http://discussions.apple.com/thread.jspa?threadID=1866970&tstart=0
Use Driver Sweeper and then reinstall the latest compatible driver. And no, dual monitors does work.
mine is the ati radeon 2600 hd xt and it worked flawlessly up until about 2-4 days ago,
oh well, xp pro it is then,
i dont want the headache of dealing with windows 7 beta!
xp should be fine to use correct?
will there be any other steps i will need to take in order for everything to function together well?
thanks

Dual monitor not working in 2012R2 essentials anywhere access

Hi
I tried to connect to 2012R2 Ess anywhere access (Remote portal) from a W7Pro client using two monitors.
Only one monitor gets used though. Can Anywhere Access be configured to enable dual monitor use in RDP sessions?
Many thanks
Rgds
Willem

Hi Willem,
As per my research, dual monitor is supported but for that to get access you need to have Windows 7 Enterprise or Ultimate version. Win 7 Pro client doesn’t support.
Apart this issue seems more related to Essential Forum, for detail you can ask in our Essential Forum over here for more accurate details.
https://social.technet.microsoft.com/Forums/windowsserver/en-US/home?forum=winserveressentials
Hope it helps!
Thanks.
Dharmesh Solanki
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

Xrandr dual monitors not displaying correctly.

When I use xrandr to try and run a dual monitor setup instead of having them mirror the screen turns into a mess of pixels. The mouse behaves correctly but I can no longer see windows or anything like that.
I am using the radeon driver and OpenBox. All software is running the most up-to-date versions.
ed ~ $ xrandr -q
Screen 0: minimum 320 x 200, current 1280 x 720, maximum 8192 x 8192
VGA-0 connected 1280x720+0+0 (normal left inverted right x axis y axis) 476mm x 268mm
1920x1080 60.0 +
1280x1024 75.0 60.0
1280x960 60.0
1280x800 59.8
1152x864 75.0
1280x720 60.0*
1024x768 75.1 70.1 60.0
832x624 74.6
800x600 72.2 75.0 60.3 56.2
640x480 72.8 75.0 66.7 60.0
720x400 70.1
LVDS connected 1280x720+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
1366x768 60.0 +
1280x720 59.9*
1152x768 59.8
1024x768 59.9
800x600 59.9
848x480 59.7
720x480 59.7
640x480 59.4
HDMI-0 disconnected (normal left inverted right x axis y axis)
Any attempt to use xrandr (for example to set the correct resolution) results in my entire screen turning into a mess of pixels and I have to restart X to get things back to normal.
I don't have an xorg.conf file at the moment.

I think I have narrowed down the cause to Cairocompmgr, when I turn that off I can switch between my monitors and operate at the correct resolutions.
I don't have any 10-monitor.conf at the moment and even simple xrandr commands like xrandr --output LVDS --auto --VGA-0 --right-of LVDS were making things go crazy. I haven't tried doing dual head yet without cairocompmgr, mind.
Edit: Confirming that with cairocompmgr disabled, everything works as expected.
Last edited by spamuel (2011-12-05 23:38:45)

Yosemite dual external monitors not recognized?

I upgraded my Macbook Air this morning to Yosemite 10.10 from Mavericks. Now, my Mac only recognizes one of my two external monitors. By this I mean that only one of my two external monitors appears in the Arrangement tab of the Display settings dialog box. This setup worked previously under Mavericks though the mouse motion was jerky on the USB monitor. Is this a bug or does Yosemite not support 2 external monitors? The external monitor that works for Yosemite is connected through the DVI port. The one that no longer works is connected through a USB port via an HDMI to USB adapter. I've rebooted my Mac and the monitor several times and tried the second USB port on my Mac. Both monitors are Samsung though they are different models. Suggestions?

Same issue - but I fixed it! I had the same issues with my MBP while running Mavericks. I tried updated to Yosemite (my co-worker runs Yosemite and has no monitor issues) to no avail. It still did not want to acknowledge any external monitors. Finally I did away with the HDMI connections altogether. I bought to DVI to Thunderbolt cords (Cable Matters, Gold Plated) from Amazon and BOOM! Fixed. Both monitors fire right up every time I plug it up.
I know its not a real fix...its still an issue that Apple needs to address, but it seems to be a great way to get around it until they do. Ive been using these cables for a couple of weeks now and still rocking. I hope this helps someone!
A little history for other to compare to.
MacBook Pro (Retina, 15-inch, Refurbished Late 2013)
Scenario 1: Mavericks 10.9.5
                    Monitor 1: HDMI to HDMI
                    Monitor 2: HDMI to HDMI via Mini to Thunderbolt Adapter
Scenario 2: Mavericks 10.9.5
                    Monitor 1: HDMI to Thunderbolt
                    Monitor 2: HDMI to Thunderbolt
Scenario 3: Yosemite Update
                    Monitor 1: HDMI to Thunderbolt
                    Monitor 2: HDMI to Thunderbolt
Scenario 4: Yosemite Update
                     Monitor 1: DVI to Thunderbolt
                     Monitor 2: DVI to Thunderbolt

Dual monitor not working under Boot Camp on Mac Pro ATI HD 2600 XT

Recently got a brand new Mac Pro with ATI Radeon HD 2600 XT graphics card.
On the Mac side (Leopard), everything works perfectly: my second monitor (a plasma screen connected with HDMI to the second DVI of the ATI card via HDMI/DVI adapter) is fully recognized and it works as an extended desktop or in Mirroring mode.
Under Boot Camp (Windows XP Pro) however, NOTHING: the second monitor always appears in the display properties, but it is grayed out (inactive), and when I try to activate it, it switches back to being grayed out immediately and nothing gets displayed on it.
After reading all the posts I can find on the topic, I tried the following (in pretty much every possible combination - Thank god for WinClone that allows me to restore the Boot Camp basic install image without having to reinstall Windows from scratch every time):
a) Bootcamp 2.0 (installed by default by Bootcamp assistant)
b) Update to Bootcamp 2.1
1) Windows XP Pro SP2c vanilla install (from my Windows XP pro install disk)
2) Update to Windows XP SP3 (I tried with and without BC 2.1: both worked -> BC 2.1 didn't seem to be required for SP3 - maybe because this is a mac pro and not a MB or MBP)
i) ATI drivers installed by default by Boot Camp assistant (BC 2.0) or by BC 2.1
ii) Latest ATI drivers found on ATI web site specifically under Boot Camp / Mac Pro.
Note: Interestingly, the catalyst installer worked ok (provided .NET framework 2.0 is installed though), but it seems that the Radeon BootCamp/Mac Pro driver set itself from ATI's web site does NOT include a driver for the HD 2600 XT - so when I install this driver set, it tells me that no compatible hardware was found...
iii) Latest ATI drivers found under Windows XP (these did include one driver specifically for the Radeon HD 2600 XT)
NOTHING seems to work. I read posts (most of the from late last year) about ATI Catalyst utility showing a 3rd monitor at some point, but I never got any 3rd monitor showing in any of my many many trials with Catalyst. I have yet to get a single image appear on my plasma under Bootcamp Windows. I don't believe its the hardware because everything works great on the max OS X side.
I am actually considering switching to an NVidia 8800 GT just to get the dual screen to work under BootCamp/Windows XP because I really need it and I read everywhere that drivers for NVidia are far better than ATI ones.
Any advice? What should I try next before getting an 8800 ?
Is there a diagnostic utility that I can use to test my config including the GC?
Thanks!

Hi there aside from my laptop I have an iMac 20" with the same HD 2600 XT card. I recently installed the Catalyst 8.6 driver by using a driver mod from driverheaven, I use Vista 32. By installing it this way I got boosted performance and many issues with the bootcamp drivers were fixed. As you may already know the ATI drivers do not install on bootcamped macs usually but the mod tool fixes this. Its unofficial so do so at your own risk but try it out and see if you get the second monitor if not just rollback. Hope this helps and I didn't want to say too much about the 8.6 driver mod because it may not be allowed here but google will provide any answers.

HDMI disconnected and monitor not recognized [SOLVED]

Hallo guys,
I run a desktop with an ASUS motherboard and an ATI video card.
I have two monitors, the first is connected by DVI and is properly workling, the second accepts DVI or VGA, then I used a VGA-HDMI adapter to plug it into the HDMI port of my graphic card.
But the monitor is not recogized and is in stand-by, waiting for a signal.
I connected the same monitor+vga+hdmi connector to my VAIO laptop (also Arch running) and it works.
Could anyone help me?
Thanks.
Last edited by Astroarch (2014-09-11 08:15:28)

Try another adapter, booting up with the monitor turned on or simply fake a monitor connection on the vga side and see if it is recognized, similar to this (at your own risk obviously).

External monitor not recognized after upgrading to win 10

After upgrading to Windows 10, my external Samsung monitor isn't recognized. Not sure if I need new drivers from HP or Samsung (they say they don't have anything for me, of course).

Hello I managed to solve my problem of brightness key not working by Installing the Intel HD Graphic 3000 Driver from Intel official site. So if your Graphic card is Intel HD 3000 Graphic and your system is 64 Bit OS then you can follow the below link to download it and install.....https://downloadcenter.intel.com/download/24971/Intel-HD-Graphics-Driver-for-Windows-7-8-64-bit Note :- This Graphic driver only support the following intel Processor And If Your Are still running the built in intel graphic card, then only download it and install at you own risk.Supports Intel(R) HD graphics on: 2nd generation Intel(R) Core(TM) i3 processor 2nd generation Intel(R) Core(TM) i5 processor 2nd generation Intel(R) Core(TM) i5 vPro(TM) processor 2nd generation Intel(R) Core(TM) i7 processor 2nd generation Intel(R) Core(TM) i7 vPro(TM) processor Intel(R) Pentium(R) Processor 900/B900/G600/G800 Series Intel(R) Celeron(R) Processor 700/800/B700/B800/G400/G500 Series

Third monitor not recognized on new Mac Pro

Hi all!
So, I got my new Mac Pro a couple of days ago.
Spending two days migrating from the old Mac Pro.
Today I was going to setup my three monitors but only two of them is recognized!?
I have one HP ZDisplay hooked up via HDMI for output when editing.
I also have two Samsung monitors as standard monitors, those two are connected via DVI-Displayport into TB.
The problem is that I can only have one or the other of the Samsung monitors working at the same time.
This only occurs when I have the HP monitor connected via HDMI, as soon as I unplug that one, both of the Samsung monitors work.
Any ideas?

You are running into:
Can I connect a DVI display?
Mac Pro supports DVI displays using Mini DisplayPort to DVI adapters. Use a single-link DVI adapter such as the Apple Mini DisplayPort to DVI adapter for DVI displays with a resolution up to 1920x1200. Use a Dual-Link DVI adapter such as the Apple Mini DisplayPort to Dual-Link DVI adapter for resolutions up to 2560x1600.
Mac Pro supports a total of two single-link DVI displays. If you connect a third DVI display using a passive adapter or a display via HDMI, it will cause one of the three displays to become inactive.
Can I connect more than 2 DVI or HDMI displays?
Mac Pro supports a total of two DVI or HDMI displays when connected via the built-in HDMI port or using the Apple Mini DisplayPort to DVI adapter. To connect additional DVI displays, use an active DVI adapter such as the Apple Mini DisplayPort to Dual-Link DVI adapter. You can connect up to six active adapter DVI displays. This requires a powered USB hub since Mac Pro offers four USB ports and you will need six to connect them all.
From:
Mac Pro (Late 2013): Using multiple displays - Apple Support
If the Samsung monitos have a displayport/mini display port input use that. Otherwise you need to purchase an ACTIVE mini displayport to DVI adopter like this one
http://www.amazon.com/Accell-B087B-006B-2-DisplayPort-Single-Link-Certified/dp/B 0098HVZA0/ref=sr_1_3?ie=UTF8&qid=1421443353&sr=8-3&keywords=ACTIVE+DVI
or
http://www.startech.com/AV/Displayport-Converters/Mini-DisplayPort-to-DVI-Active -Adapter~MDP2DVIS
For displays greater than 1920X1200 yo need a dual-link adopter
http://store.apple.com/us/product/MB571Z/A/mini-displayport-to-dual-link-dvi-ada pter

N570GTX M2D12D5 Dual monitor not recognized

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