Second monitor works on Vista, not OS X

I'm not quite sure what's happening here, but I have a standard Acer LCD hooked up via the DVI-VGA adapter. When I plug it in, OS X doesn't see it - and nothing is displayed on the screen.
However if I boot into Vista, the monitor is detected fine, and works as expected. Clicking Detect Displays momentarily causes the LCD to flicker, but nothing appears.
Is there a way to alter external resolutions etc. using the Terminal?
Cheers
Phil
MacBook Pro 2.0   Mac OS X (10.4.9)   1GB RAM, 100GB 5400rpm

So in Display Preferences there is no indication that the screen is attached?

Similar Messages

  • I have a 27" IMac.  I want to add additional monitors to it.  There is a vga slot for the first monitor.  I would like to add a second monitor but there is not another via slot.  Is there an adapter I can get for via to usb?

    I have a 27" IMac.  I want to add additional monitors to it.  There is a vga slot for the first monitor.  I would like to add a second monitor but there is not another vga slot.  Is there an adapter I can get for vga to usb?

    Here's the problem I am trying to research for you...
    There does exist a way to add a second monitor via USB:
    USB 2.0 to HDMI Audio Video 1080P Adapter for Windows and Macbook
    It's the only device I know of that can do that.  The problem is that it wants a HDMI connection.  So that means a HDMI-to-VGA adapter or converter needs to be found (not VGA-to-HDMI, those are easier to find).
    Interesting article realted to this:
    Hdmi to vga adapter
    Maybe somthing like this converter will work. 

  • Why won't my second monitor work?

    Hello,
    I am new to the forum, as well as macs, and had a basic question I was hoping to get some assistance wit
    I've got a 13" macbook pro, and cannot get a second monitor to run on it.  I have purchased the Mini Display Port to HDMI adaptor, but when its all plugged up, its a no go.
    The monitor (Samsung SyncMaster) will show activity when plugged with the HDMI (running through diff input sources) and the screen on the 'puter will go blue ...
    After this, however, the screen on the Samsung remains blank and appears to be in sleep mode.
    Any thoughts or suggestions would be greatly appreciated.
    Thank you in advance,
    S

    On your computer, if you open the Displays preferences and do not see an Arrangement tab (or there is an Arrangement tab that shows only a single monitor) then there is something physically wrong with your connection.  Try clicking Detect Displays just to see if the computer can now sense the presence of the connection.  Check your cables and make sure the mini-displayport plug is pushed firmly in so that essentially all the metal part disappears inside the socket.  Mini-displayport plugs can be a little tricky in that you need to make sure the plug is fully seated in their socket.
    If you do have an Arrangement tab, and it shows two screens, then click Gather Windows to bring the second monitor's Displays preferences on to your main screen if the second monitor is not yet showing an image.  Set the proper resolution.  Set the refresh rate if that preference is shown.  You should see a picture at this point.
    Specifically which model Samsung SyncMaster? 

  • Can you use Apple TV for a second monitor to a TV (Not mirroring)

    I'm thinking about buying an Apple TV so I can have a wireless second display for my MacBook Pro. Am I able to do this or can I only mirror the one display? Am also what is the minimum Internet speed needed for AirPlay

    OK - I now have the bits and have set up the system...
    Airparrot is great. It allows you to select which display to mirror on the Apple TV. It also allows you to send audio to the Apple TV.  I have EyeTV and Front Row set up to use the second dispaly and Airparrot successfully sends this to the Apple TV. However my audio synce problems  remain. Whenever I use digital (toslink) sound from the iMac the audio is out by several frames. Unfortunately this even happns if I send both the video and audio to the Apple TV. It is unwatchable. This means I will need to switch to the RCA audio output on the iMac (which is AUX in on the hifi) whenever I want to send video to the AppleTV.
    If I play video from the Apple TV (using home sharing) then the audio sync is much better. But this means that Eye TV wont be accessible from the Apple TV menu (now there is an opportunity for a clever programmer).
    I have used QT Sync to adjust the sync when sending video to the Apple TV via quicktime. In speech the lips sync at a difference of 8 frames. However QT Sync is no good for playing video from Front Row or EyeTV. There is another programming opportunity...(adjusting sync for all types of output - it would be a good addition to Airparrot).
    So in short, I cannot use Apple TV to play TV from the iMac. And the Apple TV menu is much more limited, in many ways, than Front Row.
    (the iMac is still running Snow Leopard - which may be partly causing the problems - but there are several reasons why I dont want to upgrade it to Mountain Lion)

  • Late 2008 model - Not Displaying Second Monitor

    My logic board broke recently and I took it to Apple to get it fixed. Once it got out of repair, I picked it up and brought it home. Plugged in the DVI cable and it did not turn on. Turns out the display is there. I can move windows over to the second monitor, but it's not actually showing anything.
    I have a Samsung HDTV and a DVI cable. It's worked before, so I know it's compatible.
    The reboot did not work. "Detect Display" did not work. Adjusted brightness. Haven't tried using the cable on someone else's monitor, nor have I tried to use another DVI cable. I still have to look into these things.
    I'm figuring that somewhere there is something I have to restart, but Google and the forums have failed me.

    Haven't tried using the cable on someone else's monitor, nor have I tried to use another DVI cable. I still have to look into these things.
    You know what you need to do. Go ahead and do it.

  • Extending the desk top, adding a second monitor/screen

    Hi,
    I bought an Apple Mini-DVI to VGA adapter that allows me to plug my 20" vga monitor into my imac so that I can have more screen space. I had hoped to be able to drag files over to the 20" screen. That works, but when plugged into my imac, the 20" screen is blurry, and I can't look at it for more than five minutes without getting a headache. If I hook up the 20" screen to my pc, I can work on it all day.
    I got the idea to add my 20" monitor to my imac after reading posts here on the forum, which all gushed about how great the result was. I went into the Genius Bar to ask about the blurriness I was experiencing, and they told me to call Apple Care. Apple Care didn't know what to do, and after putting me on hold several times, they said the blurriness was "normal distortion" from the adapter. Well, then in my opinion, the adapter is useless.
    Is there anything I can do, or should I return the adapter?

    Thats strange, I have the same set up as you and the second monitor works fine with the Mini-DVI to VGA adaptor. The only thing i could suggest would be to try connecting another monitor to the Mac and see if you have the same problem. If not, it must be the monitor.

  • HP envy won't recognize second monitor

    I just purchaes an HP Envy 17t-j100 select edition notebook. I am trying to hook up a second monitor. The monitor is not the issue it works fine with the other laptops in the office however when i plug it into this one it wont recognize it and the screen on the second monitor just says cable not connected. I have a cord that is HDMI to plug into the computer and a VGA on the other side to plug into the monitor.

    Hi,
    Do you have a converter in between ? From HDMI (digital) to VGA (analog) you need a converter. Some "cord" may have builtin converter but some may not. Please check and get a right converter.
    Regards.
    BH
    **Click the KUDOS thumb up on the left to say 'Thanks'**
    Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

  • [Solved] no signal w/ second monitor and dual screen using nouveau, i3

    Hi!
    I just brought my old screen to my room and try to make it work. It works when the other one is not connected, so no hardware problems. The result is that I can go to the right and do stuff and move the window to my working screen, but the monitor stays black and says "no signal". I tried a long time with nouveau but without success. I was not able to make the graphic card work with the propretary driver from the website and I don't want to downgrade the xorg-server to 1.12 to install nvidia-96xx...
    %lspci | grep VGA [0]
    01:00.0 VGA compatible controller: NVIDIA Corporation G94 [GeForce 9600 GT] (rev a1)
    %xrandr [0]
    Screen 0: minimum 320 x 200, current 3200 x 1200, maximum 8192 x 8192
    DVI-I-1 connected 1920x1200+0+0 (normal left inverted right x axis y axis) 518mm x 324mm
    1920x1200 60.0*+
    1920x1080 60.0
    1600x1200 60.0
    1680x1050 59.9
    1280x1024 60.0
    1280x960 60.0
    1024x768 60.0
    800x600 60.3
    640x480 60.0
    720x400 70.1
    DVI-I-2 connected 1280x1024+1920+0 (normal left inverted right x axis y axis) 376mm x 301mm
    1280x1024 60.0*+ 75.0
    1280x960 60.0
    1152x864 75.0
    1024x768 75.1 70.1 60.0
    832x624 74.6
    800x600 72.2 75.0 60.3 56.2
    640x480 75.0 72.8 66.7 60.0
    720x400 70.1
    %cat .i3/config
    ### ommitted lines
    # Multi-monitor setup
    workspace 1 output DVI-I-1
    workspace 2 output DVI-I-1
    workspace 3 output DVI-I-1
    workspace 4 output DVI-I-1
    workspace 5 output DVI-I-2
    workspace 6 output DVI-I-2
    workspace 7 output DVI-I-2
    workspace 8 output DVI-I-2
    workspace 9 output DVI-I-2
    workspace 0 output DVI-I-1
    ### ommitted lines
    How I connect it:
    %xrandr --output DVI-I-2 --right-of DVI-I-1
    nl /etc/X11/xorg.conf.d/20-nouveau.conf [1]
    1 # the left one
    2 Section "Monitor"
    3 Identifier "DELL"
    4 Option "PreferredMode" "1920x1200_60.00"
    5 EndSection
    6 # the right one
    7 Section "Monitor"
    8 Identifier "NEC"
    9 Option "PreferredMode" "1280x1024_60.00"
    10 Option "RightOf" "DELL"
    11 EndSection
    12 Section "Device"
    13 Identifier "nvidia card"
    14 Driver "nouveau"
    15 Option "Monitor-DVI-I-1" "DELL"
    16 Option "Monitor-DVI-I-2" "NEC"
    17 EndSection
    18 Section "Screen"
    19 Identifier "screen1"
    20 Monitor "NEC"
    21 DefaultDepth 24
    22 SubSection "Display"
    23 Depth 24
    24 Virtual 3200 2224
    25 EndSubSection
    26 Device "nvidia card"
    27 EndSection
    28 Section "ServerLayout"
    29 Identifier "layout1"
    30 Screen "screen1"
    31 EndSection
    I don't know what I should try. I haven't tried yet the "old-school" Xinerama stuff, but it seems tedious and error-prone...unless someone tells me that it is actually a different and possibly working approach I'm not going to try it. Any hint is welcome! :-)
    Best,
    Marc
    Last edited by Maximalminimalist (2013-11-20 09:57:44)

    Hi!
    Thanks for pointing out the repo..I did yaourt -Ss nvidia from the beginning and I didn't pay attention to the nvidia package. Sometimes archlinux is more user-friendly than one expects...
    So now my second monitor works. :-)
    Moral of the story:
    If you want to use the NVIDIA driver, read
    https://wiki.archlinux.org/index.php/Nvidia
    And if it doesn't work, read
    https://wiki.archlinux.org/index.php/Nvidia
    again, because maybe you missed something...
    Best,
    Marc

  • Move all windows of an app to a second monitor

    Is there a way to move all the windows belonging to an app to the second monitor, all at once? I tried clicking on the app icon in mission control and dragging the windows to the second monitor but that does not work.

    No, as yet there's no method for doing this (or the opposite - moving all windows from a second monitor to the main one).  Maybe this'll be addressed in Mavericks?
    Failing that, you'll just have to engage in the time-honoured tradition of leaving Feedback.

  • IMac as second monitor

    I have a 27 iMac and a 24 iMac.
    Can I, and how do I, go about using the 24 iMac as second monitor?

    Niel, forgive my ignorance, I am trying to wrap my mind around this.
    I have a 2009 24-inch, and a 2010 27-inch. The easiest solution would be to run male to male mini display cable between both machines and use the 24, with the 27 as the second monitor.
    However, if it is not too much hassle, the opposite could be better.
    To use the 27 and have the 24 as the second monitor, you say I would have to "set up a network".
    Is that merely running a cable, or what exactly is involved?
    And, after setting up a network, I would use the ScreenSaver application.
    Presuming that I was successful in setting up and running the 27 via this method, would the ultimate result be slower than running the 27 as the second monitor?
    I do not do any games or graphics, primarily making books with CS5.

  • Second monitor only shows when I  open PPRO a second time.

    CS5 WIN7 - 64 Pro
    Looking for a suggestion /solution  to an issue I have had for some while.
    I have the latest Nvidia Drivers for QuadroFX3800 but the issue began at least two previous versions ago.
    I open PPRO and it does not see the second monitor. It is not an option in the Playback settings.  (Not even there / Not greyed out)
    In fact it shows an image briefly (flashes on then off) on the second monitor  then turns it off (ie. the image going to it from the source monitor.)
    I shut out of PPRO and re open it almost immediately.  Bingo.  2nd monitor shows and its is also an option in the PB menu.

    I think I'm right in sayng that Mosaic has been added to the latest driver, 267.05 - the ability to stretch the desktop across 2 monitors.  I haven't been aware of it before.
    I say that because, having toyed with Mosiac,  I noticed that PP CS5 did flicker a few times upon boot in a way that it didn't on earlier nVidia releases.
    It seems to have settled down now.
    Am I not right in thinking, shoternz, that you are using the 2nd monitor as your preview, rather than program monitor?  Maybe there's a corrolation.
    Get your BM Intensity Pro out of the cupboard!

  • Second monitor on iMac not working with Lion

    I have a mid-2011 Thunderbolt 21.5" iMac. A secondary monitor is connected to the iMac with a Mini DisplayPort-to-HDMI cable (a single cable, not an adaptor and cable).
    When I was running Snow Leopard, the monitor worked just fine. After upgrading to Lion, the second monitor just has a black screen, and quickly goes into power save mode.
    I have already tried resetting the NVRAM (as described here: http://support.apple.com/kb/HT1379) and resetting the SMC (as described here: http://support.apple.com/kb/HT3964).
    Has anyone seen this problem? Any other suggestions for solutions?

    same here, just performed the upgrade to Lion and my secondary Samsung screen (direct HDMI cable) do not work anymore (I have a mid 2011 iMac 21.5'').
    I have tried the tricks mentioned on the following discussion:
    No Signal on HDMI TV After Lion Upgrade
    ie open terminal
    cd /System/Library/Displays/Overrides/DisplayVendorID-410c/
    sudo mv DisplayProductID-0  DisplayProductID-0.old
    Reboot after entering the commands
    But it is not working, the developper clearly messed up the video output in Lion OS!!!
    Let me know if you have a solution, I am reduced  to single screen use in the meantime... and regret the upgrade...
    Thanks

  • When I upgraded my Mac Pro HDs I lost the capcity for 2 monitors.  One monitor works fine but the second one is not "seen" by the Mac Pro.  Help?

    My MacPro is a dual quad core 2.8 intell processor system with 6 gig of RAM and 4 HDs.  I recently upgraded the HDs from 500 gig each to 2 TB each.  I did that by copying each existing hard drive to a new hard drive and then inserting the new hard drive where the copied drive had been.  I followed all of the instructions for the OX system that came after copying and replacing the drive with the OX on it.  Unfortunately now I can no longer use the 2 monitors that I used to use on the system.  One monitor works fine, the second on is not found by the OX system and simply won't respond or receive a signal from the computer.  Any ideas?

    Have you tried a NVRAM / PRAM reset?
    Shut down your Mac.
    Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
    Turn on the computer.
    Press and hold the Command-Option-P-R keys before the gray screen appears.
    Hold the keys down until the computer restarts and you hear the startup sound for the second time.
    Release the keys.

  • T400 Vista 64bit cant see second monitor in port replicator

    I installed Vista Business 64bit on my machine that came with 32bit Vista.  I was able to download all the drivers.  Everything works except it will not see my second dislpay on the port replicator. It sees the VGA display but not the DVI one. 
    Although the ATI software installed , I cannot use the control center.  It says Ati catalyst control center cannot be started becuase the current active GPU is not supported.
    Tried calling support and they wont help me becuase the machine came with 32.  
    If I go in through thw windows display setup it doesn't see the second monitor.  This all worked with it was 32 bit vista.
    Anyone know of any way around this without going back to Vista 32?
    Product: ThinkPad T400 2765-T7U 
    Original description: T9400(2.53GHz), 2GB RAM, 160GB 7200rpm HD, 14.1in 1440x900 LCD, 256MB ATI Radeon 3470HD, CDRW/DVDRW, Intel 802.11agn, Bluetooth, Modem, 1GB Ethernet, UltraNav, Secure chip, Fingerprint reader, Camera, Intel Turbo Memory, 9c Li-Ion, WinVista Business 32 (now 64)
    Message Edited by ov10mech on 03-25-2009 06:56 AM

    Solved.. uninstalled the Intel driver and reinstalled and everything worked after that.

  • New 13" Macbook Pro trying to connect to a Panasonic VIERA TC-L42U30 as second monitor. I've used multiple hdmi-thunderbolt/mini displayport adapters and multiple hdmi cables and still no success. The Macbook does not sense the second monitor (TV). Help?!

    I've been a Mac since 2008, so I know my way around the system pretty well. This issue, however, has me stumped. I had an iMac until now and only now am I experiencing some difficulty with my new MacBook Pro. The model I have is the newest 13" Macbook Pro model and I'm trying to connect a Panasonic VIERA TC-L42U30 42" HDTV as a second monitor via the Thunderbolt port.
    It worked the first two times and hasn't worked since, after 10-15 attempts with different configurations, turning things on n off, restarting the mac, unplugging the cables, adapters, TV, resetting the P RAM, etc... I've used multiple hdmi-thunderbolt/mini displayport adapters and multiple hdmi cables and still no success. No matter what I do, the Macbook does not sense the TV as a second monitor anymore.
    I took the MacBook Pro to the Apple Store, and their "genius" there had it working fine with a DVI connection to a regular monitor. The Panasonic TV I have has HDMI connections and one VGA connection which does not support HD, but no DVI option. I want an HD connection to mirror or extend my MacBook Pro screen. At the Apple Store, they didn't have a Thunderbolt/Mini DisplayPort to HDMI adapter, so he could not try that out for me.
    Anyone else have this configuration or another similar one with a Panasonic HDTV?
    Ideas? Suggestions? Anything?! Help!!
    P.S. I'm running Mountain Lion, if that wasn't already obvious. Everything is up to date in my App Store as well.
    Thanks!

    Hi There,
    I have had the exact same issue but with a projector.
    The issue lies with Mountian Lion 10.8.2.
    I tried many a combination with no luck to get HDMI working.
    Took my mac into the apple store and came to the conclusion it was the software, so I asked them to install 10.8 onto it (this is destructive so a backup is a must)
    Bought my macbook home and voila, now displaying through my projector.
    There is a small graphics update after 10.8.1 which seems to be the cause.
    Hope this helps.
    Thanks.

Maybe you are looking for