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I am running 12.04 with the LTS Hardware Enablement Stacks as my VirtualBox host. (I'm using lts-raring and VirtualBox 4.2.20.)

When setting up a new Kubuntu 14.04 guest with Virtual box, upon installing guest additions I saw the warning "Not installing X Window System drivers".

The Kubuntu 14.04 VM runs at a very low resolution (small window). How do I resolve this?

I've gone through the usual steps for setting up the guest additions. Here's the outline:

Devices > Install Guest Additions (Host+D)
sudo apt-get install build-essential gcc dkms (and Linux headers, if needed)
cd /media/$USER/VBOXADDITIONS_4.2.20_XXXX/
sudo ./VBoxLinuxAdditions.run
then reboot the VM

I cannot upgrade VirtualBox because the .deb package tries to uninstall all my LTS Hardware Enablement Stack packages. I've had this happen before and I don't want to risk the damage to my system entailed by that. So I have to stick with VB 4.2.20 on the host.

Update: I just found this: http://xpressubuntu.wordpress.com/2014/02/14/virtualbox-and-the-latest-14-04-display-stuck-at-low-resolution/ Maybe this is related?

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you've linked my blog! - anyway - I'm curious - I'm running the latest HWE on 12.04 and have installed VirtualBox direct from Oracle and it hasnt affected the HWE. How did you install 4.2.20 and from where? –  fossfreedom Mar 4 '14 at 16:39
@fossfreedom - thanks for the great blog (and the update about VB 4.3.8 solving your problem). I installed 4.2.20 direct from Oracle. When I went to install the 4.3.8 deb package from Oracle, it threatened to remove all my HWE packages. You had no problems with that? –  MountainX Mar 4 '14 at 16:57

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