USB External Monitor Problem

Discussion in 'Microsoft Surface Pro 2' started by Jabob, Jan 15, 2014.

  1. Jabob

    Jabob New Member

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    So I have a AOC USB powered external monitor (model is E1659fwu), when I connect it to my Surface Pro 2 it powers up but it only shows a black screen. I have looked through all the settings I can find as well as the manual with no luck. It worked fine the first time I plugged it in, but not since then. Just hoping someone has a idea as to how to fix it. Thanks.
     
  2. drolem

    drolem Active Member

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    Is it plugged directly into the SP2, or plugged in via a hub?
     
  3. hotphil

    hotphil Member

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    My first thoughts too. The power drain is too much.
    That monitor claims to operate at <8 watts when in use. The specs for USB3 seem to be up to 0.9 amps current draw. And a voltage of 5. So (and someone may well correct me on this) the USB max power available is 0.9 * 5 = 4.5 watts.
    So if the monitor's getting even close to its 8 watt max drain, that's over the specification for a USB3 socket. And I suspect the socket's not allowing it to drain that much. It'd probably work fine in a desktop PC where the hardware may well let it have the current it wants.
     
  4. Jabob

    Jabob New Member

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    I have tried it both using a hub and without, neither seems to work. It turns on and registers it but it only shows a black screen
     
  5. hotphil

    hotphil Member

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    Actually, before thinking about power, if it's displaying just a black screen have you configured the display settings to mirror/extend the display to the additional monitor?
     
  6. Jabob

    Jabob New Member

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    Ya, I have checked up on that, it is in extend mode. The surface also makes the USB connect noise several times when I plug it in. The display powers on but goes black. Not too sure why that is. I have even been able to drag an open program into the blank second screen, it still shows the program as running, but I can see it because the display is dark.
     
  7. the_new_normal

    the_new_normal Member

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    Try a few different resolutions (lower ones), see if you can get something to come up
     
  8. jnjroach

    jnjroach Administrator Staff Member

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    Have you installed the latest DisplayLink drivers? They are usually pretty good at updating their drivers (www.displaylink.com ). Another
    thing to try is if you have a split USB Cable that used to come with portable hard drives, try that plugging the power side into a USB to Power Adapter.
     

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