Any advice? Dual monitors not working through Surface dock.

Discussion in 'Microsoft Surface Book' started by elee532, Mar 28, 2016.

  1. elee532

    elee532 Member

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    I am having trouble getting my external monitors working through the surface dock. They flash on and off. Sometimes they work for a minute, then they start flashing off and on again. Either one connected directly to the surface works fine. I'm trying to set them as extended, with the Surface Book screen set to off. I'm using MS recommended cable. One monitor is LG ultra wide 2560 x 1080 connected via HDMI. The other is QNIX 2560 x 1440 concocted via DisplayPort. I've tried three different Surface Docks.

    Any advice?
     
  2. Bandito

    Bandito Active Member

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    If you connect just the QNIX monitor to the dock, does that work? What adapter are you using to go from the dock to HDMI?
     
  3. elee532

    elee532 Member

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  4. Seneleron

    Seneleron Active Member

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    I don't know if this will help you or not, but on the reviews for the surface dock on Amazon one person mentioned needing an ACTIVE mDP cable to get it working.

    Relevant text:

    I don't run dual 4k, don't [yet] own the dock, so I can't confirm or deny personally, but figure someone here can either debunk or confirm.
     
  5. elee532

    elee532 Member

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  6. Bandito

    Bandito Active Member

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    What kind of cable/adapter are you using to connect to the LG monitor to go from mini-DP to HDMI?
     
  7. elee532

    elee532 Member

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  8. baydude

    baydude Member

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  9. elee532

    elee532 Member

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    Well that's messed up! MS recommends active but they link to one recommended cable and it's passive. WTF!
     
  10. elee532

    elee532 Member

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    Does active/passive apply only to Mini DisplayPort to HDMI? Or, is there also active and passive Mini DisplayPort to DisplayPort cables as well?

    Thanks!
     
  11. Bandito

    Bandito Active Member

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    From what I've read, you definitely should have an active mini DP to HDMI adapter. That will probably fix you right up.

    You mentioned that you've connected the displays, one at a time of course, directly to the SB with success. I am curious to know if you've done the same with the Surface Dock and what your results were there. Do they both work correctly on the dock if only one is connected at a time?

    As far as active adapters for mini DP to DP goes, there are none as all of the signals are the same between the two, it's just the connectors that are different. If I recall correctly, mini DP actually has more signals going through it than a DP connector does, because mini DP can be used for ThunderBolt connections as well as monitor connections.
     
  12. elee532

    elee532 Member

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    Thanks Bandito!

    They do not work reliably if I hook them up to the dock one at a time. Each will work occasionally. But eventually, they start flickering on and off. Sometimes it's constant. Sometimes it's just every few minutes or even every few hours. It just doesn't seem like this dock was ready for prime time yet.

    I'll give the active adapter a try with the HDMI monitor. Not sure what to do about the monitor with the DP connection.
     

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