[Solved] Full Screen on VB 6.0.10 does not auto-resize

[dkaptain]

I just updated VB to 6.0.10 and full screen does not work properly.
The screen does go to full screen but the display of the guest does not resize to fill the screen. There is a large black border around the guest's screen.

View -> Full Screen Mode is checked
View -> Auto-resize Guest Display is checked

I have installed Guest Additions, ran VBoxLinuxAdditions.run and rebooted several times.

VirtualBox
VB Version 6.0.10
VBox_GAs_6.0.10

Host: MacBook Pro (Renina, 15-inch, Mid 2015)
macOS Sierra Version 10.12.6

Guest: Linux CentOS 7
Kernel 3.10.0-957.21.3.el7.x86_64

[socratis]

We need to see a complete VBox.log, from a complete VM run, where the problem occurs:

• Start the VM from cold-boot (not from a paused or saved state) / Observe problem / Shutdown the VM (force close it if you have to).
• With the VM completely shut down (not paused or saved), right-click on the VM in the VirtualBox Manager and select "Show Log".
• Save only the first "VBox.log", ZIP it and attach it to your response. See the "Upload attachment" tab below the reply form.

[dkaptain]

Attached is a zipped copy of the log.
I was not able to log into my CentOS 7 guest system this morning.

As a workaround, I have been reverting back to VirtualBox 5.2.32 which still works for me.

[BigHOOMan]

This is happening to me as well. I can't access anything because the screen will not resize correctly.
Running mac os 10.14.6 and just updated Virtual Box 6.0.10 on a MacBook Pro
Very frustrating because I have time sensitive items I need to work on.

[Mister Blunt]

Same here.

I'm on a 5K 27" Retina Display and max resolution for Win 10 1903 guest is 1024 x 780. Too small to use.

Using Virtualbox 6.0.10
Using Vbox Guest Additions for Windows v. 6.0.10
Host OS: MacOS Mojave 10.14.6
Hardware: 2017 27" iMac 5K, SSD only, 32GB RAM
All 64-bit

Vbox settings:
8GB RAM for Guest on a 32 GB total for host without VM running.

Thanks very much for any help. See attached.

[ChicagoBud]

Just jumping on the bandwagon here. Did anyone figure this out?

[dkaptain]

I've been refreshing this page on a daily basis. I haven't been able to figure anything out.
As a work around, I'm using VB version 5.2.32 and ignoring the helpful messages that there is a new version available.

[socratis]

@dkaptain

00:00:03.459986 3DEnabled  <integer> = 0x0000000000000000 (0)
00:00:03.459992 VRamSize   <integer> = 0x0000000001000000 (16 777 216, 16 MB)

Go to the VM Settings » Display » Screen. Enable 3D acceleration. Increase the VRAM to the max 128 MB. I had no problem going in FullScreen mode with a Fedora28 guest. Also, make it a habit to start the VM in normal mode (something like 1280x1024) and once started then HostKey+F to switch to FullScreen mode.

@Mister Blunt

00:00:01.023288 VMSVGAPciId  <integer> = 0x0000000000000001 (1)

Go to the VM Settings » Display » Screen. Change the vGPU from "VMSVGA" which is the default for Linux guests, to "VBoxSVGA" which is the default for Win guests.

[dkaptain]

The solution by socratis worked.
It left my screen in very high resolution which makes it very difficult to read.
I was able to adjust the screen resolution using my guest CentOS utilities.
In addition to those changes, I had to
View -> Virtual Screen 1
and select "autoscaled output" as "unscaled output" was selected.

Thank you @socratis

[socratis]

It left my screen in very high resolution which makes it very difficult to read.

What you should do in that case is to go to the VirtualBox Preferences » Display » Scale Factor, change that to 200%. There's no need to adjust anything in none of your VMs after that. Even the LiveCDs look as they should. On top of that, the View » Virtual Screen 1, is set to "autoscaled output".

That's after a lot of trial and error...

[BigHOOMan]

What about My MacBook Pro Mojave 10.14.6
Using a Dell E2211H 1920x1080@6)Hz
It was working great until the update.

[socratis]

@BigHOOMan
We need to see a complete VBox.log, from a complete VM run, where the problem occurs:

1. Start the VM from cold-boot (not from a paused or saved state) / Observe problem / Shutdown the VM (force close it if you have to).
2. With the VM completely shut down (not paused or saved), right-click on the VM in the VirtualBox Manager and select "Show Log".
3. Save only the first "VBox.log", ZIP it and attach it to your response. See the "Upload attachment" tab below the reply form.

I would also like to see the recipe of the VM, the ".vbox" file.

1. Right-click on the VM in the VirtualBox Manager. Select "Show in Finder".
2. ZIP the selected ".vbox" file and attach it to your response.

[BigHOOMan]

Screen not resizing

[socratis]

@BigHOOMan
You have not installed the Guest Additions (GAs). No GAs => no FullScreen. With the VM window having the focus, go to the host's menu "Devices" » "Insert Guest Additions CD Image...". If not prompted by auto-run, run "VBoxWindowsAdditions.exe" from the CD. Make sure there are no errors or suggestions during the install.

[BigHOOMan]

Thanks! That did it!