Virtual Screen 2 "Enable" Greyed Out

Discussions related to using VirtualBox on Windows hosts.
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Craboak
Posts: 4
Joined: 27. Nov 2021, 03:11

Virtual Screen 2 "Enable" Greyed Out

Post by Craboak »

Hey all I read through the forum and other posts in referring to fixing dual displays in a Windows 10 VM didnt seem to lead me to success.

CPU: Ryzen 9 3900x
GPU: XFX 5700xt
RAM: 32gb 3200 MHz
MOBO: Asus x570-E

Host OS: Windows 10 64bit
Guest: Windows 10 64bit
Configuration for VM:
- Base Memory: 8192 MB
- Acceleration: VT-x/AMD-V, Nested Paging, Hyper-V Paravirtualization

- Video Memory: 256 MB
- Screens: 2
- Graphics Controller VBoxSVGA
- Acceleration 3D


When running the VM the Virtual Screen 2 option doesn't seem to let me enable it and as a result Windows can never detect a second display and let me set one.
How would I go about fixing this so I can run multiple displays? If I need to provide anything additional let me know. Any help is appreciated.
scottgus1
Site Moderator
Posts: 20965
Joined: 30. Dec 2009, 20:14
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Windows, Linux

Re: Virtual Screen 2 "Enable" Greyed Out

Post by scottgus1 »

Looks like everything in your VM and host is good, except for Guest Additions in the VM. If you think they are installed already, please provide a VM log:

Start the VM from full normal shutdown, not save-state. Run until you see the problem happen, then shut down the VM from within the VM's OS if possible. If not possible, close the Virtualbox window for the VM with the Power Off option set.

Right-click the VM in the main Virtualbox window's VM list, choose Show Log. Save the far left tab's log and the hardening log next to it, zip them, and post the zip file, using the forum's Upload Attachment tab.
Craboak
Posts: 4
Joined: 27. Nov 2021, 03:11

Re: Virtual Screen 2 "Enable" Greyed Out

Post by Craboak »

Requested Logs
Attachments
VMLog.7z
(42.27 KiB) Downloaded 103 times
scottgus1
Site Moderator
Posts: 20965
Joined: 30. Dec 2009, 20:14
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Windows, Linux

Re: Virtual Screen 2 "Enable" Greyed Out

Post by scottgus1 »

Guest Additions are not installed in the VM. These are necessary to enable multiple monitors. See section 4 in the manual.

Also the Windows 10 VM will like two processors, not just one.
Craboak
Posts: 4
Joined: 27. Nov 2021, 03:11

Re: Virtual Screen 2 "Enable" Greyed Out

Post by Craboak »

ah thank you for the point in the right direction. I will read through the documentation and reach back out if I get stuck.
Craboak
Posts: 4
Joined: 27. Nov 2021, 03:11

Re: Virtual Screen 2 "Enable" Greyed Out

Post by Craboak »

Perfect that fixed everything. Thank you so much for the help!!! :D
scottgus1
Site Moderator
Posts: 20965
Joined: 30. Dec 2009, 20:14
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Windows, Linux

Re: Virtual Screen 2 "Enable" Greyed Out

Post by scottgus1 »

Great! Glad you're up and running.
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