topic Re: Virtual display bug? in Graphics

Virtual display bug?

KWong21 — Mon, 14 Nov 2016 08:45:26 GMT

Hello,

I found a probably a bug with the Intel graphics driver,

I could copy the same problem with different NUC type of devices,

including Bay Trail, Cherry Trail and Braswell platforms,

they all have the same problem, when the problem appears, the screen goes black, leaving only the mouse cursor on screen,

if you are lucky enough, you could blind-click into the system, then display could come back but it would be the extended desktop screen,

the primary screen is gone.

Display OK at the beginning
Unplug HDMI cable from the system
Now put system to sleep
Plug HDMI cable back to the system (while it's still sleeping)
Now, wake up the system
Problem appears by 100% – a non-exist virtual display – "Generic Non-PnP Monitor" device now appears in device manager/servlet/JiveServlet/showImage/2-434323-308688/nonpnp.jpg
Video output mode being changed to extended desktop automatically: Virtual display + the external display, and virtual display takes over the display priority/servlet/JiveServlet/showImage/2-434323-308689/virtual.jpg
To recover, unplug HDMI and plug it back, display back to normal (Virtual Display – Generic Non-PnP Monitor disappeared), no more extended desktop, and primary display go back to the external display as it should
/servlet/JiveServlet/showImage/2-434323-308690/novirtual.jpg

Re: Virtual display bug?

KWong21 — Mon, 14 Nov 2016 08:53:26 GMT

Quite obvious that the display output is messed up.

I could copy the same problem on these devices:

1.) Intel Compute Stick STK1AW32SC (Cherrytrail Z8300)

2.) Asrock Beebox N3150-NUC (Braswell N3150)

3.) MINIX NGC-1 (Braswell N3150)

All of them are running the latest Windows 10 Anniversary edition + their latest graphics drivers installed.

Re: Virtual display bug?

KWong21 — Tue, 15 Nov 2016 07:03:17 GMT

"if you are lucky enough, you could blind-click into the system, then display could come back but it would be the extended desktop screen,

the primary screen is gone."

If the system has no password, hitting ENTER could go inside the wrong extended screen.

Re: Virtual display bug?

idata — Tue, 15 Nov 2016 16:31:05 GMT

Hello kenofstephen ,

Thank you for joining the Intel community.

Would you please fill out the information at the following link to better assist you.

/thread/77761 https://communities.intel.com/thread/77761

Please don't forget the SSU file the DxDiag and the DispDiag, also I will appreciate if you can attach the graphics report with the driver version that you have the issue.

You can follow the steps to get the Report for Intel® Graphics Drivers here:

http://www.intel.com/content/www/us/en/support/graphics-drivers/000005848.html http://www.intel.com/content/www/us/en/support/graphics-drivers/000005848.html

Regards,

Ivan.

Re: Virtual display bug?

KWong21 — Wed, 16 Nov 2016 15:03:27 GMT

Hi Ivan,

I shall provide what you asked for as soon as I have time to do so.

Re: Virtual display bug?

idata — Wed, 16 Nov 2016 23:00:51 GMT

Thank you enofstephen, meanwhile I recommend trying the new driver that Intel has released, you can download it here:

https://downloadcenter.intel.com/download/26404/Intel-Graphics-Driver-15-45-?product=88355 https://downloadcenter.intel.com/download/26404/Intel-Graphics-Driver-15-45-?product=88355

I suggest you to uninstall the old driver first and then install the new one.

http://www.intel.com/content/www/us/en/support/graphics-drivers/000005598.html Uninstalling the Intel® Graphics Driver and Intel® Display HDMI/Audio Driver

Regards,

Ivan.

Re: Virtual display bug?

KWong21 — Thu, 17 Nov 2016 07:02:10 GMT

Sadly the driver is not suitable for the devices I mentioned.

Re: Virtual display bug?

idata — Thu, 17 Nov 2016 19:05:30 GMT

Thank you kenofstephen , once you post the information we can continue from there.

Best wishes,

Ivan.

Re: Virtual display bug?

idata — Fri, 25 Nov 2016 19:38:01 GMT

Hello ,

I'm following on this post to ask you if your issue has been resolved or if you need further assistance.

Regards,

Ivan.

Re: Virtual display bug?

KWong21 — Thu, 01 Dec 2016 05:29:43 GMT

Hi Ivan,

I found a patch on the Internet that disable the virtual display function of the Intel driver which temporarily fixed the problem,

but it shouldn't be fixed this way because the virtual display capability is lost after applying the patch.

Here is the patch:

; ForceVirtualDisplay

; 1-Enable Virtual Display 0-Disable Virtual Display

cmd /c reg ADD "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0000" /v ForceVirtualDisplay /t REG_DWORD /d 0 /f

cmd /c reg ADD "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0001" /v ForceVirtualDisplay /t REG_DWORD /d 0 /f

cmd /c reg ADD "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0002" /v ForceVirtualDisplay /t REG_DWORD /d 0 /f

Re: Virtual display bug?

idata — Thu, 01 Dec 2016 18:45:52 GMT

Thanks for the information kenofstephen, if you could post the information that I requested above it will be great so we can further investigate on this issue.

Please fill out the information at the following link to better assist you.

/thread/77761 https://communities.intel.com/thread/77761

Please don't forget the SSU file the DxDiag and the DispDiag, also I will appreciate if you can attach the graphics report with the driver version that you have the issue.

Regards,

Ivan.

Re: Virtual display bug?

KWong21 — Fri, 02 Dec 2016 08:50:35 GMT

Category

Questions

Answers (N/A if not applicable)

Description

Provide a detailed description of the issue

Video output jumped to extended desktop mode by itself if HDMI is unplugged before sleep and plug back before wake up

Please place an X to the right of the option showing how often you see this issue using specific steps. (Ex: 'Every few times a game is started it flickers.' <- This would be "Often")<p>

Always (100%): X

Often (51-99%):

Sporadic (20-50%):

Very Sporadic (<20%):

Hardware (HW)

Brand and Model of the system.

MINIX NGC-1

Hybrid or switchable graphics system?

ie Does it have AMD or NV graphics too?

Make and model of any Displays that are used to see the issue (see note2 below).

LFP = Local Flat Panel (Laptop panel)

EFP = External Flat Panel (Monitor you plug in)<td style="padding: 0 5.4pt; border-top: none; border-right: 1pt solid windowtext; border-bottom: 1pt solid windowtext; border-left: none; font-style: inheri...

Re: Virtual display bug?

idata — Fri, 02 Dec 2016 14:21:37 GMT

Hello kenofstephen,

Just to make sure, did you try the Intel® generic driver? You can download it here:

https://downloadcenter.intel.com/download/25176/Intel-HD-Graphics-Production-Driver-for-Windows-10-64-bit-N-Series-?product=87258 https://downloadcenter.intel.com/download/25176/Intel-HD-Graphics-Production-Driver-for-Windows-10-64-bit-N-Series-?product=87258

Before installing this driver, I suggest you to uninstall the old driver restart your system and install the generic driver manually.

http://www.intel.com/content/www/us/en/support/graphics-drivers/000005598.html Uninstalling the Intel® Graphics Driver and Intel® Display HDMI/Audio Driver

http://www.intel.com/content/www/us/en/support/graphics-drivers/000005629.html Manually Install an Intel® Graphics Driver in Windows® 10 and Windows 8*/8.1*

Please let me know how it goes.

Regards,

Ivan.

Re: Virtual display bug?

KWong21 — Fri, 02 Dec 2016 17:06:42 GMT

I was using that driver before, same problem, please note.

Re: Virtual display bug?

idata — Fri, 02 Dec 2016 17:17:50 GMT

Thank you for that information!

Re: Virtual display bug?

KWong21 — Sat, 03 Dec 2016 05:25:20 GMT

The problem is not hardware dependent,

I am having the same issue on 3 different platforms of different brands.

They have one thing in common - they are all mini PCs without internal display.

Re: Virtual display bug?

idata — Mon, 05 Dec 2016 18:45:00 GMT

Thank you for the information.

Ivan.

Re: Virtual display bug?

KWong21 — Mon, 12 Dec 2016 04:26:08 GMT

When this bug can be fixed?

Re: Virtual display bug?

idata — Wed, 14 Dec 2016 00:50:40 GMT

I have tried to replicate this issue but I don't see the same behavior, when this happens does it cause any error in your system unable to work with it?

Ivan.

Re: Virtual display bug?

KWong21 — Wed, 14 Dec 2016 06:43:03 GMT

Interesting, I can copy on 3 different platfoms of different brands with the same method and you say you can't.

May I know how do you copy? Did you exactly follow these steps?

Display OK at the beginning - NO PROBLEM at this point
Unplug HDMI cable from the system - System is still running
Now put system to sleep by pressing the power button - System goes into sleep without HDMI cable attached
Plug HDMI cable back to the system (while it's still sleeping)
Now, wake up the system - You will then see the problem
Problem appears by 100% – a non-exist virtual display – "Generic Non-PnP Monitor" device now appears in device manager

Your China office can copy this problem, I don't know why you can't.