Windows 10: Main Monitor Failover to Seconsdary Monitor connected to External USB to DP Video Adapter

Hi everybody,Sorry to disturb. I am asking here because I was not able to find the answer in Google.com. May be this is a new problem...Preconditions:1. Two Identical Monitors with DisplayPort2. Monitor1 is connected to DisplayPort of PC Windows103. Monitor2 is connected to PC via External USB to DP Adapter4. Monitor1 is configured as Main Monitor in Windows Display Settings5. Extend this Display Option is selected in in Windows Display SettingsProblem to reproduce:1. Open any Windows application, for example Notepad or MS Word on Monitor12. Power-Off the Monitor1 3. Taskbar and Desktop Icon

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Windows from HDMI monitor move to DP monitor when monitors go to sleep.

Hi Bobbeloos,



Welcome to post in Microsoft Community.

I'm Mosken, I do apologize for the inconvenience that you're experiencing right now, let me help you figure it out.



According to your description, I knew that you have two external monitors of similar model connected via HDMI and DP, but when the system goes to sleep, the DP-connected monitor goes straight to black, but the HDMI-connected monitor shows "no signal" and then goes black, and when you go to sleep from sleep, the DP-connected monitor goes straight to black All windows in HDMI monitor moved to DP monitor when computer was woken up and the resolution was not normal. If my understanding is wrong, please correct me in the reply.



Based on the available information, the speculation is that when the system goes to sleep, your HDMI connected monitor will be directly disconnected, it is recommended that you turn off "Allow the computer to turn off this device to save power" by follow steps. "Win" + "X" > "Device Manager" > "Display Adapter", double click "Display Adapter" to expand the entry, you will see a list of your monitor device names, then select your external monitor device names(try both), right click > " Properties" > "Power Management" tab, then uncheck "Allow the computer to turn off this device to save power", then press Enter to confirm.



The above steps are provided based on the information I have learned so far, I wish that will be helpful to you. If your problem still cannot be solved by these steps, you could tell me the specific situation in the next reply. I will continue to assist you in solving the problem.



Best Regards,

Mosken- MSFT | Microsoft Community Support Specialist

 

Windows 10 External USB Monitor

Hi Anthony

Please provide more detail on this problem . . .

What type of USB port are you connecting that monitor to and what type of converter are you using?

What type graphics card/chip is on that laptop, does it support 2 external monitors - open Device Manager, expand the Display Adapters section, what device(s) are listed there?

 

Lost external USB monitor after W10 update of 10-01-2016...need help.

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Pancho,

9 minutes ago
Last edited: 1 minute ago

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