Black Screen With Vm in Top Left Corner Virtualbox

6 Answers 6

The guest additions cd needs installed within the client. You can do this from the client toolbar. Devices -> Insert guest additions CD image...

That will mount the guest additions cd image. Click on it to run it. Let it install. It will then reboot the guest operating system. When the guest restarts and you log back in you will be able to go full screen and the resolution will adjust automatically. You can scale the window whatever way you want by dragging the corners of guest window and it will auto adjust to whatever that resolution is.

answered Nov 26 '17 at 14:42

Eamonn DoyleEamonn Doyle

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6

• This answer deserves the most votes. After following these steps, Windows will always fill the entire window without needing to modify settings in either the guest or the host.

  Nov 28 '17 at 21:24

• Totally agree with @trebormf. This is the correct answer

  Jan 3 '18 at 9:58

• At first I found the display to appear slightly 'soft'. After checking the vm display settings I notice that the scale value was 101%. After correcting this to 100% I now have a good sharp display

  Jan 3 '18 at 10:08

• It happened to me after a windows update, when Guest Additions was already installed. Going out of an into full screen mode again (right-ctrl + f, right-ctrl + f) solved the problem (more or less what is in the second paragraph, but without mouse).

  Aug 13 '18 at 8:25

• In my case there was no optical drive attached to my VM. I had to go to Settings -> Storage to add one before I could insert the disk

  Jul 7 '20 at 18:38

Most probably the resolution in Virtualbox does not match your monitor resolution. Try to change the resolution inside the virtual machine.

answered Mar 6 '16 at 12:34

kukulokukulo

1,970 8 silver badges 21 bronze badges

7

• How do I achieve this?

  Mar 6 '16 at 12:36

• Inside Windows 10 set the resolution matching your monitor.

  Mar 6 '16 at 12:42

• Thanks, it worked. Unfortunately, the highest resolution available is 1600x1200. Also, in that resolution, my mouse doesn't go above a certain level. Is there anyway to add a custom resolution? And is there anyway to fix this mouse problem?

  Mar 6 '16 at 12:57

• I was able to solve the problem. You simply execute this command in the terminal: VBoxManage setextradata "VMName" CustomVideoMode1 1920x1080x32

  Mar 7 '16 at 6:18

• @RahulMukherji's answer worked. Just replaced "VMName" with my VM's actual name and after windows booted up, went and selected the 1920x1080 resolution in Windows Display Settings.

  Aug 6 '19 at 9:26

I had a similar problem and did the following (with the Windows 10 VM stopped):

1. In the manager right-click and choose settings for the Windows 10 VM
2. Click on User-Interface options, at the bottom
3. Un-check/disable the option Show in Full-Screen/Seamless

This seemed too easy to possibly fix it, but it worked for me! No more black anomalies and such!

answered Apr 19 '17 at 8:09

answered Jan 31 '17 at 5:34

Krishna ChaliseKrishna Chalise

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I found there's an option at the bottom right corner of the window.

Pick the icon between the folder and recording icon. Choose 'Virtual Screen' in the dropdown then you'll be provided a whole bunch of resizing options. Pick one that fits your testing purposes.

Kulfy

15.8k 25 gold badges 53 silver badges 94 bronze badges

answered May 28 '19 at 15:53

Another possible cause is less than 28 Mb of Video Memory has been allocated to the VM. To adjust

1. Shutdown VM
2. Go to Settings / Display in VirtualBox
3. Adjust Video Memory slider so at least 28 Mb has been allocated.
4. Start up VM
5. My VM did not automatically switch to full screen until I moved it to my 2nd monitor and then back to my main screen. I also right clicked on monitor icon on bottom of VM window and selected a couple of different resolutions - some adjusted others didn't.

answered Jan 27 at 11:36

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Black Screen With Vm in Top Left Corner Virtualbox

Source: https://askubuntu.com/questions/742692/black-screen-around-virtualbox-vm-in-fullscreen-mode-guest-additions-installed

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