WMS 2012: Black screen to every client

I use Windows Multipoint Server 2012. I have 6 clients per server. Every server has 3 graphic cards with 2 exodus each one (one VGA and one DVI). I also have 6 simple USB hubs, plugged into server (every usb hub has one mouse and one keyboard).
The problem is that many many times when server stats, cannot connect with clients and all i get is a black screen (keyboard and mouse don't work) to the monitor of every client. I have to restart again and again to finally see login screen at clients monitor.
This happens almost every day...
Graphic card's drivers are installed. Windows multipoint server 2012 is updated.
Does anyone know why this happens?
Thank you very much..

I'm having same problem. I have a server with 2 GFX cards. It works fine until it goes into low power mode then when yo move the mouse to wake the clients the monitor reacts and the light goes green as if it is waking, then we get a black screen with no
login prompt.
I will try change powercfg and repost here.

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After install WMS 2012 and patch WMS-KB2791647-ENU-x64, all hardware drivers and patches, the system ran well for 2 days, but then the screen
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Can you provide more information about the setup you have for your server? Specifically whether or not it is domain joined or not and whether there are any specific policies that might have changed to trigger the behavior? Also, the information about the
number of users, types of user (domain/local), the types of station (USB direct connect, thin clients, zero clients, etc.) would be helpful.

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Last edited by niqingliang2003 (2011-01-22 01:55:05)

OMFG. i cannot believe my eyes.
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Which Mac Mini? > Finding your Mac OS X version and build information
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Hi Peter,
Based on your description, the following thread also focused on this kind of issue and can be referred to for troubleshooting.
Server 2012 Black Screen on Login
http://community.spiceworks.com/topic/406717-server-2012-black-screen-on-login
Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.
Hope it helps.
Best regards,
Frank Shen

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APPLE ***!!
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How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
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WMS 2012: Black screen to every client

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