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Is there anyway to do something like Mac OS X's "Detect Displays" on Windows (Vista Business, SP2)?

I have two monitors connected to two computers, one of them through a KVM-switch. When Windows is started or unlocked while not the active computer on the switch, the screen resolution is set to 1024 x 768 on the switched screen. It is also reported as the largest size the screen can handle, so I can't just reset it to its native 1680 x 1050.

On my Mac, I can just use System Preferences -> Displays -> Detect Displays to make the OS pick up that it's actually a bigger screen, but I haven't been able to find something like this on Windows. Tips or suggestions?

Edit: If I reboot the PC while it is the active computer in the KVM switch, I can change the resolution to 1680 x 1050 without a problem. The issue is that the KVM switch is reporting a max resolution of 1024 x 768 and I can't get Windows to detect that there's another screen at the end of the cable without a reboot.

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What model/make KVM? –  Tog Nov 17 '10 at 12:07
    
@Tog: It's one of these: aten.com/products/… –  Lizzan Nov 17 '10 at 12:22
    
What graphics card are you using? Also, is the other computer on the KVM using the proper resolution? –  MBraedley Nov 17 '10 at 13:08
    
@MBraedley: The graphics card is an ATI Radeon HD 2600 XT. My Mac also changes the resolution to 1024 x 768 if I start it while it's not the active computer in the KVM, but I can just do a "Detect Displays" to have it pick up the right display again. –  Lizzan Nov 17 '10 at 14:00
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There is a great big honking 'Detect' button in the Display Properties in Windows 7. I thought Vista has this functionality but if the button isn't there I don't know what to tell you, as I don't have a Vista image handy I can poke around with. :/ –  Shinrai Nov 17 '10 at 15:06

4 Answers 4

up vote 2 down vote accepted
+50

(Moving comment to answer per @Lizzan's request, although I didn't quite think it warranted being an answer)

There is a great big honking 'Detect' button in the Display Properties in Windows 7. I know Vista has this functionality (at least, I recall being able to do it in XP as well so why would it be missing?)but if the button isn't there I don't know what to tell you, as I don't have a Vista image handy I can poke around with. :/

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Since my question was "Is there anyway to do something like Mac OS X's "Detect Displays" on Windows (Vista)?", and you say there's such a button, I'd say it counts as an answer! =) –  Lizzan Nov 17 '10 at 19:04
    
It may NOT have the button though. See, I'm not sure. I can't think of any valid reason it WOULDN'T though... –  Shinrai Nov 17 '10 at 19:30
    
@Shinrai: Could you possibly add a screenshot of where I can find this button - I have a Swedish OS and I'm not sure that I'm in the right place because I can't find the button you've mentioned. –  Lizzan Nov 18 '10 at 6:27
    
I did find the button on my Windows 7 virtual machine, but I haven't been able to find it on my Vista. Can anyone with access to Vista find this button and post a screenshot of it? –  Lizzan Nov 18 '10 at 6:35
    
@Lizzan - Looks like my fears were correct. Hope somebody's able to find this for you. –  Shinrai Nov 18 '10 at 15:15

On Windows 7 you can press [WindowsKey]-P and choose between single, clone and extend.

This also detects the monitor if it's currently not seen – useful when the second monitor is lost after a KVM switching etc.

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If you can't change the resolution to be any higher, then it is probably a limitation of the graphics card. You can look your graphics card model number up online to see if it supports a resolution of 1680 x 1050.

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The graphics card supports the resolution fine, if I restart the computer while it is the active computer in the KVM-switch. I'll edit my question to add that. –  Lizzan Nov 17 '10 at 10:15

First right click you desktop, then click screen resolution. At the top right there is two buttons Detect and Identify this is probably what you are looking for.

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Is this on Vista? Could you please provide a screenshot, because I can't find the Detect button, only the Identify one. –  Lizzan Nov 24 '10 at 5:07
    
What version of vista? You will have to wait until I get home tonight for a screen shot. –  Kyle Nov 24 '10 at 13:42
    
Vista Business, SP2 –  Lizzan Nov 25 '10 at 6:50

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