Mac pro (late 2013), Dell UP2414Q and windows8.1 bootcamp

I bought mac pro (late 2013) and Dell UP2414Q.
Monitor is set on DP1.2 and works normally in OS X. I get 4K@60Hz, I can switch to lower resolutions like 1920x1080 and it works.
Then I Installed windwos 8.1 which I need for some testing and I have aproblem here:
When DP 1.2 is enabled, and I switch to 1920x1080 resolution, I get 2 pictures on screen squeezed together - totally useless and I can't work on that.
If I disable DP 1.2 and revert on monitor to DP 1.1 it works normally. But I switch to 4K with only DP1.1 enabled I can get only 30Hz out.
As it seems under OS X I can use any resolution with DP 1.2 enabled, but not in windows 8.1 via bootcamp.
I would really really love to get this working, I tried next things, but nothing worked:
-update bootcamp support
-update AMD gpu drivers from their web page
I already wrote on Dell forum and I got redirected here on apple forums.

which model  rMBP 13"  or rMBP 15"
the 13 will support it with the latest intel drivers.
the 15 will support it with the latest nvidia drivers.
i have both models and both are working correctly.

Similar Messages

  • Fix for blurry text on Dell 30" U3014 connected by DisplayPort to Mac Pro (late 2013) AMD D700

    Just connected my new Mac Pro (late 2013) to my Dell 30" U3014 with DisplayPort cables, only to find blurry text and bad gamma etc.
    Whilst the earlier post/discussion Mac Pro (8 core with the D700 GPU's) (Dell U2713H) was somewhat illumative, I thought a simple list of links for this specific configuration might help someone.
    The Ruby script, modified for D3014 can be found at post http://embdev.net/topic/284710#3153072
    If you're impatient like me, don't forget to copy the created Folder to /System/Library/Displays/Overrides before rebooting.  Thanks to Blurry text on Dell Monitor + Mac OS X | Danilo Ercoli
    Piers

    Hi Grant,
    Thanks for taking the time to think about my issue and respond. But I don't see where your response is relevant.
    I want to connect two monitors, each via Mini-Display Port, and only one will work at a time. I am not using DVI cables at all. In this article, http://support.apple.com/kb/HT6068, it clearly states that I can connect three monitors via Thunderbolt (mini-display port) as long as they're on different busses. I was doing that, and it didn't work.
    What display configurations can I use with my Mac Pro (Late 2013)?
    You can connect up to six displays to your Mac Pro (Late 2013) running Windows 8 via Boot Camp. Check the list below to be sure you're setting up your displays in a supported configuration via the HDMI and Thunderbolt ports.
    You can connect:
    Six Apple LED Cinema Displays (27-inch) or third-party displays via Thunderbolt. For best results, attach displays to different Thunderbolt busses when possible (see figure below).
    Three Apple Thunderbolt Displays (27-inch). Connect only one per Thunderbolt bus (see figure below). Note: You could connect three more LED Cinema Displays (27-inch) or third-party displays, one per Thunderbolt bus, for a total of six displays.
    Two Apple Thunderbolt Displays (on Thunderbolt bus 1 and 2) and one 4K Ultra HD TV using HDMI.
    Two 4K displays (on Thunderbolt buses 1 and 2) and one 4K Ultra HD TV on HDMI).

  • Mac Pro (Late 2013), Photoshop CC stamp tools and Yosemite Problems

    Lately when I'm using the the stamp tool in Photoshop CC after a few clicks I hear a short "click click" out of the Mac Pro Late 2013 when then goes on to freeze
    my keyboard and basically makes it useless. I then have to save the photo by clicking in the menu bar, restart the computer which clears the problem. I'm using a Wacom Intuos Pro and thought it could the problem but I tried it also with a normal usb mouth clicking on an image and get the same results. What is this "click click" noise because as soon as I hear that I know that the Mac Pro is going to freeze.........anyone else having any Photoshop problems?

    I've not tried exporting with Premiere but with After Effects on my identical Mac Pro also using istat menus, I rarely if ever see the 2nd GPU spin up. I'm exporting right now for example and:
    makes me wonder if this is infact an issue with Istat menus or if the 2nd gpu really isnt being utilized.

  • Why isn't Photoshop fully optimized for the Mac Pro (Late 2013), and when will this happen?

    On the new Mac Pro (late 2013):
    Currently, Photoshop CC 2014 seems to lag behind iMacs and Macbook Pros (even older ones) for some tasks.
    I assume that this issue is related to either multi-core processing but seems more likely to be a problem with the ATI GPUs not being optimized as the Nvidia GPUs are.
    Why is this the case, and when will this be addressed?
    Any feedback from Adobe official would be appreciated.
    Thanks

    jameskachan wrote:
    …The obvious reason [sic] seems to suggest…
    That's what it suggests to you, in the limited scope of your vision and knowledge, and without your having provided detailed specs about your hardware.
    Due to the current unavailability of clairvoyants and mind-readers in the forum, we respectfully request you supply sensible, complete details.
    We don't even know what your specific issues are, and for all we know you may be running the pathetic, buggy Yosemite OS—which Apple is giving away for free.
    In this case, you have been enormously fortunate in that you received a reply from none other than Gµrµ Chris Cox, a top Adobe engineer who has been writing Photoshop code since the last millennium.
    It's hight time you drop the attitude and avoid further embarrassing yourself in a public forum.  Just my two cents.

  • Cannot connect between a Mac Pro (late 2013) and a MBP and vice versa

    Cannot connect to Macbook Pro from Mac Pro late 2013. I have tried via ethernet and wifi. I can screen share either way. I have tried to connect to other MBP's on the same network with no luck. I try and connect as a registered user, as I usually do, with no luck. When I enter the Username and then Password the box vibrates as if the details are incorrect, they are definitely correct however.
    I have no firewall on. Both devices are using the most recent OS.
    Thanks in advance
    Jeff

    Hi Grant, Here is the Console system log. Tried to connect to Macbook Pro at 15:46:30
    Mar 22 15:44:28 Jeffs-Mac-Pro com.apple.xpc.launchd[1] (com.apple.preference.datetime.remoteservice[744]): Service exited due to signal: Killed: 9
    Mar 22 15:44:38 Jeffs-Mac-Pro kernel[0]: hfs: mounted Time Machine Backups on device disk2s2
    Mar 22 15:44:40 Jeffs-Mac-Pro com.apple.backupd[736]: Disk image /Volumes/Data/Jeff’s Mac Pro.sparsebundle mounted at: /Volumes/Time Machine Backups
    Mar 22 15:44:40 Jeffs-Mac-Pro mds[35]: (Volume.Error:880) Root store set to FSOnly with matching create! (loaded:1)
    Mar 22 15:44:41 Jeffs-Mac-Pro com.apple.backupd[736]: Backing up to /dev/disk2s2: /Volumes/Time Machine Backups/Backups.backupdb
    Mar 22 15:45:27 Jeffs-Mac-Pro com.apple.backupd[736]: Will copy (72.8 MB) from Jeff Mac Pro HD
    Mar 22 15:45:27 Jeffs-Mac-Pro com.apple.backupd[736]: Found 973 files (72.8 MB) needing backup
    Mar 22 15:45:27 Jeffs-Mac-Pro com.apple.backupd[736]: 1.56 GB required (including padding), 232.28 GB available
    Mar 22 15:45:48 Jeffs-Mac-Pro NetAuthSysAgent[773]: NAHSelectionAcquireCredential complete: iakerb A88A5E19-89A1-8FEF-EE42-8F065FC94669 - ***@mac.com: GSSCred: 0x7ffa296262f0 <MC: iakerb com.apple.idms.appleid.prd.4f7466316e4d737570647351515953457261382b32773d3d@WEL LKNOWN:COM.APPLE.LKDC>
    Mar 22 15:46:41 Jeffs-Mac-Pro NetAuthSysAgent[773]: NAHSelectionAcquireCredential complete: iakerb A88A5E19-89A1-8FEF-EE42-8F065FC94669 - ***@mac.com: GSSCred: 0x7ffa29432780 <MC: iakerb com.apple.idms.appleid.prd.4f7466316e4d737570647351515953457261382b32773d3d@WEL LKNOWN:COM.APPLE.LKDC>
    Mar 22 15:47:04 Jeffs-Mac-Pro Console[781]: Failed to connect (_consoleX) outlet from (NSApplication) to (ConsoleX): missing setter or instance variable
    Mar 22 15:47:17 Jeffs-Mac-Pro com.apple.xpc.launchd[1] (com.apple.PubSub.Agent[784]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.pubsub.ipc
    Mar 22 15:47:17 Jeffs-Mac-Pro com.apple.xpc.launchd[1] (com.apple.PubSub.Agent[784]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.pubsub.notification
    Mar 22 15:47:36 Jeffs-Mac-Pro com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): The _DirtyJetsamMemoryLimit key is not available on this platform.
    Mar 22 15:47:56 Jeffs-Mac-Pro Dock[286]: void CGSShmemReleaseMappedMemory(CGSShmemID): failed to find shmem ID 787.

  • New Mac Pro (Late 2013) and Motion

    Although Final Cut Pro is optimized for the new Mac Pro (Late 2013), the current Motion 5.1 apparently is not.  Even when turning the render settings down, the playback of a complex motion sequence within Motion was extremely choppy.  When exporting to a ProRes file, only four to six of the available 12 threads ony my 6-core system were being only partially utilized.   I have 64 GB RAM and dual D700s with nothing else running, so system resources are plentiful.  Any suggestions out there?  Hopefully there will be an update to bring it up to speed.

    The sequence I am rendering in Motion is definately complicated, with about 100 differencet images on a moving wall with reflections and multiple other effects.  This definitely pushes the system alot but I was able to use the same sequence on a very old Mac Pro (2006) and a i7 Hackintosh with an Apple 5870 card overclocked to 4 GHz without this severe stuttering on playback within Motion.  There is no shortage of memory on the new Mac Pro with 64 GB RAM and D700s with 6 GB VRAM, running all files on the main internal SSD.  Very strange.

  • Mac Pro late 2013 mouse and keyboard

    Today I receive my new Mac Pro late 2013. With my big surprise is without mouse and keyboard.
    Which keyboard and mouse I have to buy?
    Cable or wireless?
    How and where connect?
    I also see in the online store there is only cable keyboard USB 2 but the Mac Pro have only USB 3 ports.
    Please help me. I'm very frustrated. I have this new fantastic computer  front me and I can't do nothing.
    I look every where but I not find any information about.

    You can use wireless keyboard and mouse.
    http://store.apple.com/us/product/MC184D/B/apple-wireless-keyboard?fnode=56
    http://store.apple.com/us/product/MB829LL/A/apple-magic-mouse?fnode=56

  • Eye strain on Mac Pro late 2013

    Hi guys,
    I Have a problem with my Mac Pro late 2013. After few hours of work my eyes start to hurt really badly, my head hurts also. I am working on Dell U2713HM, few days ago I changed it for a pair of u2312 Dell monitors and I feel the eye strain again. When I try to work on my Asus laptop using the same monitor I don't have a problem. I tryed all the advices on the web for eye strain regarding monitor configuration but it has no effect. Also i can see the image on the monitor isn't rendering properly for example when I open an image there is always some square parts randomly missing.
    Do I have a graphic card problem, monitor problem or something else.
    Any experiences anybod, please help.

    I agree I tried a little Google and came up with this site maybe something to look at https://discussion.evernote.com/topic/47161-mac-evernote-clip-rectangle-control- command-c-not-working/page-2 and there seems more have problems thoug not with Mac Pro MBP Retina: Poor image quality from hdmi output
    and here http://forums.macrumors.com/showthread.php?t=1235305
    Hope something of this will help. To me it seem that there is a communicate problems between Mac Pro and The monitor.

  • Mac Pro (Late 2013) OSX abnormally slow

    Hi,
    I'm not sure why but my OSX is running much slower then before, weird thing is I don't even install many softwares in it. Below is the description of the issues I'm facing.
    Beach ball frenzy, lots of things ended up with beach balls from switching back and forth between apps (safari and cad). Within app itself, safari freezes occasionally and then whatever I click during that time period (like opening a new tab, links in the page) will suddenly open and this goes on with other apps as well, even finder takes a few seconds to show the content.
    Start up time : 14.2 sec
    Waiting for shut down menu to appear : 15 secs
    Click shut down: forever (monitor goes to sleep after 10 minutes of inactivity, but computer is not turned off)
    Previously, whenever software update requires restart, os will just hang and give a grey screen error, this will cause my computer to be in a boot loop where turning off will show the same error as well. Only way I find out is to open in safe boot, apply update and all goes to normal but it seems the problem is not solved cause now my OS just doesn't work properly. 
    Oddly enough, I got no problem installing Yosemite.
    I don't think it's hardware problem cause right now my windows 8 partition is running much faster then OSX. Oh the irony

    EtreCheck version: 2.0.5 (90)
    Report generated October 19, 2014 at 9:55:08 AM GMT+8
    Hardware Information: ℹ️
      Mac Pro (Late 2013) (Verified)
      Mac Pro - model: MacPro6,1
      1 3.7 GHz Quad-Core Intel Xeon E5 CPU: 4-core
      12 GB RAM Upgradeable
      DIMM1
      4 GB DDR3 ECC 1866 MHz ok
      DIMM2
      4 GB DDR3 ECC 1866 MHz ok
      DIMM3
      4 GB DDR3 ECC 1866 MHz ok
      DIMM4
      empty empty empty empty
      Bluetooth: Good - Handoff/Airdrop2 supported
      Wireless:  en2: 802.11 a/b/g/n/ac
    Video Information: ℹ️
      AMD FirePro D300 - VRAM: 2048 MB
      AMD FirePro D300 - VRAM: 2048 MB
      DELL U2711 2560 x 1440 @ 59 Hz
    System Software: ℹ️
      OS X 10.10 (14A389) - Uptime: 0:4:9
    Disk Information: ℹ️
      APPLE SSD SM0256F disk0 : (251 GB)
      S.M.A.R.T. Status: Verified
      EFI (disk0s1) <not mounted> : 210 MB
      Macintosh HD (disk0s2) /  [Startup]: 150.00 GB (39.42 GB free)
      Recovery HD (disk0s3) <not mounted>  [Recovery]: 650 MB
      BOOTCAMP (disk0s4) /Volumes/BOOTCAMP : 100.14 GB (12.33 GB free)
    USB Information: ℹ️
      Apple Inc. BRCM20702 Hub
      Apple Inc. Bluetooth USB Host Controller
      SteelSeries Sensei Raw Gaming Mouse
      3Dconnexion SpacePilot PRO
      Dell Dell USB Keyboard
      Generic Ultra Fast Media Reader
    Thunderbolt Information: ℹ️
      Apple Inc. thunderbolt_bus_2
      Apple Inc. thunderbolt_bus_1
      Apple Inc. thunderbolt_bus_0
    Configuration files: ℹ️
      /etc/sysctl.conf - Exists
      /etc/hosts - Count: 20
    Gatekeeper: ℹ️
      Mac App Store and identified developers
    Kernel Extensions: ℹ️
      /Applications/Capture One 7.app
      [not loaded] com.Leaf.driver.LeafFwXDriverMatcher (1.2.0d1) Support
      /Applications/DiskWarrior.app
      [not loaded] com.alsoft.Preview (4.4) Support
      /Library/Extensions
      [loaded] com.3dconnexion.driver (10.2.0 - SDK 10.8) Support
      /Library/Extensions/3Dconnexion.kext/Contents/PlugIns
      [not loaded] com.3dconnexion.virtual.driver (10.2.0) Support
      /System/Library/Extensions
      [loaded] com.avira.kext.FileAccessControl (1.0.0d1 - SDK 10.9) Support
      [not loaded] com.nvidia.CUDA (1.1.0) Support
    Startup Items: ℹ️
      CUDA: Path: /System/Library/StartupItems/CUDA
      Startup items are obsolete and will not work in future versions of OS X
    Launch Agents: ℹ️
      [loaded] com.avira.antivirus.general.agent.plist Support
      [loaded] com.avira.antivirus.ipm.ui.plist Support
      [failed] com.avira.antivirus.notifications.agent.plist Support
      [loaded] com.avira.antivirus.odscan.default.plist Support
      [loaded] com.avira.antivirus.scheduler.agent.plist Support
      [running] com.avira.antivirus.systray.plist Support
      [loaded] com.avira.antivirus.telemetry.agent.plist Support
      [loaded] com.avira.antivirus.update.default.plist Support
      [loaded] com.nvidia.CUDASoftwareUpdate.plist Support
    Launch Daemons: ℹ️
      [loaded] com.adobe.fpsaud.plist Support
      [failed] com.avira.antivirus.dbcleaner.plist Support
      [failed] com.avira.antivirus.ipm.loader.plist Support
      [running] com.avira.helper.watchdox.plist Support
      [loaded] com.bombich.ccc.plist Support
      [running] com.cleverfiles.cfbackd.plist Support
      [running] com.edb.launchd.postgresql-8.4.plist Support
    User Launch Agents: ℹ️
      [loaded] com.google.keystone.agent.plist Support
      [loaded] com.logos.LogosIndexer.plist Support
      [running] com.spotify.webhelper.plist Support
    User Login Items: ℹ️
      SmartDaemon Application (/Library/Application Support/CleverFiles/SmartDaemon.app)
      iTunesHelper Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
      Caffeine Application (/Applications/Caffeine.app)
      Alfred Application (/Applications/Alfred.app)
      CrossOver CD Helper Application (/Applications/CrossOver.app/Contents/Resources/CrossOver CD Helper.app)
      3DconnexionHelper Application (/Library/PreferencePanes/3Dconnexion.prefPane/Contents/Resources/3DconnexionHe lper.app)
      Cinch Application (/Applications/Cinch.app)
    Internet Plug-ins: ℹ️
      FlashPlayer-10.6: Version: 15.0.0.189 - SDK 10.6 Support
      Flash Player: Version: 15.0.0.189 - SDK 10.6 Support
      QuickTime Plugin: Version: 7.7.3
      Default Browser: Version: 600 - SDK 10.10
    3rd Party Preference Panes: ℹ️
      3Dconnexion  Support
      CUDA Preferences  Support
      Flash Player  Support
      FUSE for OS X (OSXFUSE)  Support
    Time Machine: ℹ️
      Time Machine not configured!
    Top Processes by CPU: ℹ️
          16% avguard.bin
          3% WindowServer
          1% fontd
          0% syslogd
          0% AppleSpell
    Top Processes by Memory: ℹ️
      436 MB avguard.bin
      245 MB mds_stores
      155 MB Safari
      129 MB SmartDaemon
      116 MB Calendar
    Virtual Memory Information: ℹ️
      5.70 GB Free RAM
      5.21 GB Active RAM
      678 MB Inactive RAM
      1.29 GB Wired RAM
      1.03 GB Page-ins
      0 B Page-outs

  • My Mac Pro late 2013 hangs at 18 minutes left on update to Yosemite.

    I Attempted to update my Mac Pro late 2013 to Yosemite after it was released today through the Apple Store. Unfortunatly after several hours and many auto restarts it hung at 18 minutes to go.
    THe Mac is backed up on an Airport 4, but is there any other way and how do I get to the backup?
    Thanks for any help.

    Try resetting the SMC and NVRAM
    Intel-based Macs: Resetting the System Management Controller (SMC)
    About NVRAM and PRAM
    Next note the time of text problem and then after reboot open the Console app and look for log entries at that time. Post suspicious ones here

  • Premiere Pro CC crashing on brand new Mac Pro (late 2013)

    Such a big disappointment, yesterday our brand new Mac Pro (Late 2013) with OS X version 10.10.2 was installed and Premiere Pro CC is constantly crashing. One of the problems is that when I open a brand new project and before I add any content to a new sequence I just want to position the video track higher so I can see more audio tracks, the program crashed. I did it several times (new projects, new sequences) every time the same crashing program.
    Deinstalled Premiere Pro and reinstalled it again, but no luck.
    Tomorrow I created a whole new account with administrator rights on the Mac, the issue as described above was gone but at some point in time the program crashed again, and when I reopen the project, with two sequences open (one with footage and one empty) and I want to close the empty one, Premiere is crashing again. So I can't continue my work on this project and need to start over again....
    This is the error report that I'm getting....
    I hope somebody can help me on this because it's very frustrating...
    Thanks in advance

    Hi tschreiber10,
    Thanks for posting on Adobe forums,
    Please follow this document http://helpx.adobe.com/creative-cloud/kb/ame-premiere-crash-launch-export.html
    Regards,
    Sandeep

  • Can iMac 27 late 2009 enter TDM connected to a Mac Pro late 2013?

    I'm trying to get an iMac 27 late 2009 to enter target display mode when connected to a Mac Pro late 2013.
    I tried with Apple's Thunderbolt cable and pressing Command + F2 on the iMac did nothing.
    So I bought a Mini DisplayPort cable, and now Command + F2 makes the iMac's screen turn black for a second and then back.
    After rebooting, before logging in, if I press Command + F2 it actually works for about 2 seconds and then back to the iMac's screen. After this, if I keep trying it just flashes black.
    So, my question is, has anyone managed to connect this two devices?
    Should I buy another cable? Format the iMac? Any suggestions?
    Thanks for the help.
    OS X Mavericks 10.9.4 on both machines.

    Thanks for your help.
    I don't know what more I can add to the initial post.
    The second Mini DisplayPort cable that I tried is Belkin, I don't think there are better cables for this, since Apple is not selling it anymore.
    I did mentioned that if I restart the iMac, before logging in with any user, pressing command + F2 or simply connecting the cable will actually work, it shows up as a second display on the Mac Pro, I can move the mouse pointer on the iMac. But after about 2 seconds the iMac exits Target Display Mode, and after this pressing Command + F2 will only turn iMac's monitor black for about a second and not entering TDM anymore.
    I even checked the firmware versions and both are up to date according to this.

  • USB Card Reader not recognized on new Mac Pro (late 2013)

    My Sony USB multi-card reader (model: MRW62E), which I use for SD cards mostly, works on my MacBook Pro (Retina, Mid 2012), my new iMac, and my old Mac Pro (2009), via the USB ports, but is unrecognized entirely on my new Mac Pro (late 2013). All machines are running OS X Yosemite 10.10.2. Neither the card reader, nor the cards appear at all in FCP, image capture, apple system profiler, the desktop, or disk utility. I cannot find any drivers online addressing the issue, including Sony's website.
    Perhaps an additional update for increased compatibility vis-a-vis the new Mac Pro would do the trick...

    Does the reader show up under USB in System Report?
    If the reader is working properly both the reader and an inserted card will show up.

  • After Effects is NOT using the full Twelve GB of memory on my Mac Pro late 2013 dual video cards

    I would like to know if there is a reason why AE CC12 and CC13 (2014) is not using the full amount of video card memory on my MP late 2013. It's six GB per freaking card I invested in and its not accessing it.
    Is there a work around this issue?

    Why shouldn't it. When I upgraded to this new Mac Pro late 2013 with its dual video cards. Premier turned into a blasting fast editor. I no longer need to render my edited cuts and the scrubbing of preview and timeline footage is phenomenal. The only performance boost I've seen in AE with this new system is in rendering and I can't even say its double as fast in comparison to Premier or Encoder and its an 8-Core system with 32GB of ram. Everything else is flying.
    So again to answer your why should it. I rebuttal with "Why shouldn't it". The other two mentioned programs are using GPU resources to improve performance why is AE so behind the curve.
    I'm not the only one asking why. I was in the audience at a Dmala meeting here in LA with Todd Kopriva and Al Mooney previewing AE and Premier 2014.
    People kept asking Todd about performance boost in between questions about new features. Todd finally just asked what do you prefer a couple of new features or performance boost. Everyone wanted performance boost over new features. If you think I'm making this up go ask Todd Kopriva.

  • Running 4 screens as one with Mac Pro Late 2013

    Hello there, got a Mac Pro late 2013 edition driving 4 60" 1080P screens in a 2x2 configuration.  Trying to make those work as one 4k display.  Was able to get it working to allow us to display a page across all 4 displays.  But have not been able to get a video to display across all 4.  Our current  configuration has also been very finnicky and anytime we move the webpage around, it snaps the window to be full screen across the bottem two displays. 
    Anyone have any idea's as to how to make this work the way we are wanting to?

    "Fullscreen" is a garbage feature ported from IOS and the iPhone, the land of tiny screens and one-at-a-time processing -- AVOID it at all costs.
    This will work as long as you stretch a Window across multiple screens, and turn OFF all hints that you want multiple, independent screens.
    This describes the new ways Mavericks tries to undercut the way it used to work:
    OS X: Using Multiple Displays in Mavericks

Maybe you are looking for