Windows 10 virtual screen 1 and 2 extended display issue

[A11en]

Setup:

Windows 10 1803
VBOX Version 5.2.12 r122591 (Qt5.6.2)

2 virtual screens 1680x1050

Virtual screen 1 is main display.
I can see task bar on Virtual Screen 2 and mouse movement and can click on icons in the task bar and they will open on Virtual Screen 1.

Issue is that I cannot move any open application from Virtual Screen 1 to Virtual Screen 2. In windows 10 the displays are set in "extend display"

I also see where virutalbox guest additions is consuming a lot of CPU. Avg 80% the VM is sluggish.

Any Ideas?

[A11en]

To add some additional information.

The extended display option works fine on the host machine with same monitors. It is only with Virtual Box VM that I see the issue.

[socratis]

You've got to setup your screens from within your guest. Did you do that? They're not necessarily going to "copy" the settings from your host, it's more that unlikely...

[A11en]

yes the screens are defined in the guest.

in experimenting it seems that the moment I try to drag something from screen 1 to screen 2 the vboxtray.exe spikes up in CPU and stays up consuming resources. The VM at this point is VERY slow to respond. although killing the process and restarting it does not seem to resolve the issue. I reboot and then the moment I try to move an object of app to screen 2 it spikes and my VM comes to sluggish.

[A11en]

another observation I just saw.

If I kill the vboxtray.exe and NOT restart it. I am able to move objects between the two screens without an issue.

[socratis]

Disable Drag 'n Drop. See if that improves the situation...

[eliosbrocchi]

Hello I've the same version and the same operating system "Windows 10 1803 VBOX Version 5.2.12 r122591 (Qt5.6.2)", but when I run an imported Windows 7 64bit Virtual machine in normal mode I've the following attached screen, other virtual machine create on this pc run normally, I've the same situation when I import an exported virtual machine in a Virtual Box installed in Debian 8 64 bit. The situation is indipendent by OS Virtual Box Guest and Host (I've updated both, I've updated Virtual Box Software, I've updated Guest Additions), the behavior for me is for import/export but I've not found a solution to reset the VM. Anybody have idea ?
Thanks Elio

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