No Window Decorations in Zorin 9 after Guest Additions - VirtualBox 4.3.20

[FutureAlex]

After Installing Zorin 9 32 bit core (3D Acceleration Enabled) I installed VirtualBox Guest Addtions as follows:

In Termainal ran:

sudo apt-get install build-essential linux-headers-$(uname -r) dkms

Then from VirtualBox Menu selected Devices - Insert Guest Additions CD image... And ran it. After I rebooted all Window Decorations were missing (Minimize Maximize/Restore and Close buttons) I tried everything in Zorin but found that it happened after I installed Guest Additions from VirtualBox.

The only fix was to install Guest Additions from terminal in Zorin using the following:

sudo apt-get update

sudo apt-get install virtualbox-guest-x11

and choose Y to overwrite

I rebooted and my Window Decorations Were Back.

I think the problem is with 4.3.20 Guest Addtions CD image

[Michael Thayer]

Thank you for the report. I have to tell you though that we are not likely to find time to investigate this as is, as I don't know of anyone else or other guest systems affected by this. If you can investigate more yourself and get a better idea of what is going wrong we might be able to look at it of course.

[Michael Thayer]

See #13723. Does this occur with 3D disabled? What components (GNOME, whatever) does Zorin use?

[FutureAlex]

It does not occur when 3D is disabled. Zorin uses GNOME 3

[FutureAlex]

One other thing to note: With 3D enabled the decorations show in VBoxGuestAdditions_4.3.12.iso ​http://download.virtualbox.org/virtualbox/4.3.12/ and earlier - they do not work in 4.3.14 and above.