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After enabling Hyper-V on my Windows 10 laptop I have 5 extra generic pnp monitors detected in my display settings panel and in my device manager. When I remove the Hyper-V feature these monitors are gone.
When I now connect an extra display to my HDMI port and I want do duplicate my second screen is never on a same display number. So today I extend display 1 and 6 but tomorrow it can be 1 and 5.
I am using a Dell Precision M2800
Any ideas why this happens?
Danny
Posted 2016-12-05T18:28:44.510
Reputation: 175
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Based upon past experience, this is typically caused by a a display driver. Try checking online for a newer one, and if that doesn't resolve the issue, try on older version.
– Run5k – 2016-12-05T19:17:58.2332But when I remove hyper-v I only see 1 monitor. So clearly Hyper-V is doing something strange here. – Danny – 2016-12-07T09:36:59.947
Perhaps Hyper-V is a contributing factor that serves as a catalyst to reveal the underlying problem. I could be wrong, but every time I have previously encountered this problem the display driver fixed it. – Run5k – 2016-12-07T13:57:40.787
1@danny-h I can confirm that I have the exact same problem as you. I enabled hyper-v this morning, and now I have extra monitors appearing, seemingly in random quantities and in a random order. Updating display drivers (for both Intel HD Graphics 4000 and AMD FirePro W4170M) does not resolve the issue. Turning off hyper-v does, however (which is unfortunately a non-fix -- i need hyper-v on since I'm trying to use docker for windows). – dvlsg – 2016-12-07T18:02:36.770
1@danny-h scratch that -- updating the drivers using Windows 10 device management doesn't resolve the issue, but grabbing drivers directly from the manufacturer's website (Dell, in my case, and the Intel drivers specifically) did fix it. The driver installer noted that it was installing an older version than was currently installed -- maybe the newest version of the drivers has an incompatibility / bug when mixed with hyper-v? Unsure. – dvlsg – 2016-12-07T18:13:56.387
Problem came back for me with a windows update. Using the current set of drivers on Dell's website doesn't fix it. – dvlsg – 2017-09-12T19:19:08.717
This also happened to me - installed Hyper-V and after the required reboot I have phantom monitors – toby1kenobi – 2017-10-04T10:45:01.423
@toby1kenobi, if this also happened to you and the accepted answer solved your problem, it might be prudent to comment and/or up-vote accordingly rather than author an entirely new question & answer pertaining to the exact same problem. – Run5k – 2017-10-11T15:36:21.040
I deleted my question for you, but this question here (that you're asking me to now participate in) has also been marked a duplicate, by five different people! – toby1kenobi – 2017-10-11T18:54:56.817
@toby1kenobi yes, it is technically labeled as a duplicate, but I am the person who posted the appropriate answer in both of them. However, as you strongly emphasized within your deleted question, the original one didn't specifically mention Hyper-V as the catalyst for the problem. This question did and already had an accepted, viable solution which solved the problem. You saw that before you created your "new" question/answer. Once again, that is deceptive and unprofessional, at best. – Run5k – 2017-10-11T20:18:33.757
I had the same issue with Lenovo Ideapad Y510P, I installed latest driver for Intel Graphics HD 4600 which I downloaded from Intel.com website. now the problem is gone. – Soorena – 2017-11-05T11:26:07.850