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"To extend the desktop, a desktop or display must be disabled."

Whenever I try to connect a third monitor to my desktop I get that message. I have a dp to dvi (active), hdmi to vga (active), and dvi to vga (passive). Why does this happen? Unless I have something wrong, they should all work. All the monitors are vga only except one which is dvi, hdmi, and vga.
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More about extend desktop desktop display disabled
  1. What video card do you have?
  2. AMD Radeon HD 7770
  3. derekullo said:


    So, what you are telling me is I can't do this. My main display is connected to the dp. The other two have to be vga.
  4. derekullo said:


    Also, may I be able to connect the third monitor to the onboard graphics having both run simultaneously. (Sorry if this is or isn't common knowledge. Graphics isn't exactly my specialty)
  5. Could you give a link to the active dp adapter you are using? And the exact gpu model? You could possibly use the igpu, check your bios for an igpu multi monitor option assuming this is the xps 8500 you mentioned in the other thread.
  6. k1114 said:
    Could you give a link to the active dp adapter you are using? And the exact gpu model? You could possibly use the igpu, check your bios for an igpu multi monitor option assuming this is the xps 8500 you mentioned in the other thread.


    http://www.amazon.com/Cable-Matters-Plated-DisplayPort-Adapter/dp/B00BI3YEQO/ref=sr_1_4?ie=UTF8&qid=1401664905&sr=8-4&keywords=dp+to+dvi+adapter

    That is the dp to dvi adapter.

    Couldn't find the model. It is just the HD 7770 that dell gives you. Has three ports on the back contrary to the model from amd on their website.

    And multimonitor support IS enabled in the BIOS.

    And I tried doing it. It is finicky though. When I connected it (pc was on), the monitor turned on then went to sleep. When I restarted it, nothing happended. The two monitors connected to the GPU were the only ones on. And all it does is repeat this paragraph. (BTW this paragraph is when the third monitor is plugged into the onboard graphics)
  7. k1114 said:
    Could you give a link to the active dp adapter you are using? And the exact gpu model? You could possibly use the igpu, check your bios for an igpu multi monitor option assuming this is the xps 8500 you mentioned in the other thread.


    And BTW the intel graphics does NOT show up in the device manager. And I do have the xps 8500.
  8. That's a passive adapter, states in the description. That's why it's not working.
  9. k1114 said:
    That's a passive adapter, states in the description. That's why it's not working.


    Sorry. Wrong one. They look similar though. http://www.bestbuy.com/site/rocketfish-displayport-to-dvi-d-adapter/8927855.p?id=1218955993012&skuId=8927855&st=DP%20to%20dvi&cp=1&lp=5
  10. k1114 said:
    That's a passive adapter, states in the description. That's why it's not working.


    Since this one is probably passive too, what are my options?
  11. k1114 said:


    So no on the onboard graphics?
  12. Are the intel drivers installed? It's called intel multi display in the dell bios. When that is enabled, you just have the monitors in before you turn it on and it should work.
  13. k1114 said:
    Are the intel drivers installed? It's called intel multi display in the dell bios. When that is enabled, you just have the monitors in before you turn it on and it should work.


    The intel drivers are not. Should I install them? They don't exactly work. The last time I tried this, my computer shut down before it could start up and kept doing that loop.
  14. Best answer
    The monitor connected to the mobo won't be on unless the drivers are installed.
  15. k1114 said:
    The monitor connected to the mobo won't be on unless the drivers are installed.


    Makes more sense than not. Thanks
  16. k1114 said:
    The monitor connected to the mobo won't be on unless the drivers are installed.


    I can run two graphics drivers at once?
  17. On windows 7 and 8, yes.
  18. k1114 said:
    The monitor connected to the mobo won't be on unless the drivers are installed.


    k1114 said:
    On windows 7 and 8, yes.


    Whenever I try to install the drivers, it says that my computer does not support the minimum requirements. I checked in my devices, and 2500 wasn't there in the device manager..
  19. You may need the driver installed beforehand. Some mobos are weird like that. You can try to only have a monitor on the mobo or you may need to take out the gpu.
  20. k1114 said:
    You may need the driver installed beforehand. Some mobos are weird like that. You can try to only have a monitor on the mobo or you may need to take out the gpu.


    Okay I will try that
  21. k1114 said:
    You may need the driver installed beforehand. Some mobos are weird like that. You can try to only have a monitor on the mobo or you may need to take out the gpu.


    I tried all of these things but to no avail. I tried to install drivers and all it did was tell me that my system didn't meet the minimum requirements. I unplugged all monitors from the gpu and put the one I am trying to get on the mobo. It still didn't work. I removed the gpu and tried and it didn't work. And yes, I double checked the bios and it is enabled.
  22. k1114 said:
    You may need the driver installed beforehand. Some mobos are weird like that. You can try to only have a monitor on the mobo or you may need to take out the gpu.


    Well I repeated the steps again. But this time I got different results.
    Here is what I did:
    Disabled Onboard
    Restart
    Enabled Onboard
    Restart
    Shutdown
    Plugged in monitor with hdmi to vga (tried vga didn't work)
    Started computer.


    Here is what happened:
    After last step, computer shut down before getting to POST then restarted and booted up fine but with monitor disabled

    Plugged in monitor while windows was on, computer repeated what happened.

    I am starting to think it is the PSU but other people with the xps 8500 have done this successfully.
  23. And still, intel 2500 doesn't show in device manager.
  24. With the gpu out, reset cmos. There should be no reason it doesn't use the igpu since there is no other gpu to use.
  25. k1114 said:
    With the gpu out, reset cmos. There should be no reason it doesn't use the igpu since there is no other gpu to use.


    Took the CMOS battery out. Left it out overnight. Put it back in. And nope. Still don't work. And I did update the BIOS to the latest version. Still, no display. The monitor isn't even powering on when I start the computer (while it didn't do this before). I tried both ports. I tried a different monitor. Again, the PSU maybe. I put the graphics card in and booted to windows and plugged in the GPU. And again, computer turned off when igpu was plugged in and couldn't restart until I plugged it out.
  26. k1114 said:
    With the gpu out, reset cmos. There should be no reason it doesn't use the igpu since there is no other gpu to use.


    Since I just decided to give up on the integrated, if I used this adapter http://www.amazon.com/Accell-B087B-005B-DisplayPort-Single-Link-Certified/dp/B004071ZX0/ref=sr_1_2?ie=UTF8&qid=1401714774&sr=8-2&keywords=active+dp+to+dvi would it work? The other two are hdmi to vga and dvi to vga.
  27. RobCrezz said:


    I plan on setting up this monitor as a tv for a client and many of the reviews stated that there is some lag with videos. The DP to DVI is amd certified and active so that is what I am probably going to use.
  28. orangesmasher221 said:
    RobCrezz said:


    I plan on setting up this monitor as a tv for a client and many of the reviews stated that there is some lag with videos. The DP to DVI is amd certified and active so that is what I am probably going to use.


    If you use these with USB 3 there is no lag, but good luck with that.
  29. When you say plug in the igpu you mean the monitor in the igpu? What cpu do you have?

    Why spend $56 and use usb when the dp adapter is $24? Bandwidth may not be the cause of the lag. It's just how it works and with comments saying it loses ogl and hardware acceleration support, it can't be too capable. When I looked up info, I found it uses your cpu to encode and the hardware on the adapter to decode. There are other usb adapters that emulate the gpu so you get better performance as well as full hardware support on the connected monitor.
  30. k1114 said:
    When you say plug in the igpu you mean the monitor in the igpu? What cpu do you have?

    Why spend $56 and use usb when the dp adapter is $24? Bandwidth may not be the cause of the lag. It's just how it works and with comments saying it loses ogl and hardware acceleration support, it can't be too capable. When I looked up info, I found it uses your cpu to encode and the hardware on the adapter to decode. There are other usb adapters that emulate the gpu so you get better performance as well as full hardware support on the connected monitor.


    I have the intel i5 3450. Sorry, my english isn't the best. I mean the monitor into the igpu.
  31. Well it seems you can't get the igpu to work at all under any circumstance then I'd have to assume an issue with the mobo if it never worked before. You could send it to dell but if you don't care, you could just get the dp adapter.
  32. k1114 said:
    Well it seems you can't get the igpu to work at all under any circumstance then I'd have to assume an issue with the mobo if it never worked before. You could send it to dell but if you don't care, you could just get the dp adapter.


    Yeah. My warranty expired. I don't feel like paying for a new warranty for a new mobo. I'll just get the adapter.
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