Guest-additions installed but problems with the windows

[abecidofugy]

Hello,

I have installed a Virtualbox in my Win 8.1, the version is 4.3.20.96997. I use Kubuntu in a guest. I have made a entire clone of the VM, because I wanted to test Plasma 5.2. I have install all the package, all works but I have a big problem with guest additions.

What I have done ?

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cd /opt/VBoxGuestAdditions-4.3.20
sudo sh uninstall.sh
sudo apt-get remove --purge build-essential dkms linux-source linux-headers-$(uname -r)
sudo apt-get install build-essential dkms linux-source linux-headers-$(uname -r)

I have reboot. Plasma 5.2 works, I can log in with out problem. Then I try to install the guest-addition. So I mount the ISO in the top menu of my VM.
I copy all the file in ~/guest

The I reboot again, in before log in I make an CTRL + ALT + F1. Enter there lines :

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cd ~/guest
sudo sh VBoxLinuxAdditions.run


Compile is done without errors.I add myselft to vboxusers and vboxsf

I reboot. The windows log-in is large : I log on, I'm on Plasma 5.2

But now the panel menu is not displayed, and the program I launched before installing Guest addition are not displayed (Kate and Dolphin). They are launched because I can made a ALT + TAB to pass for the preview windows (thumbnail) to the another.

What's the problem with Virtualbox, please?

Thx for your help

[loukingjr]

Try disabling 3D acceleration.

[abecidofugy]

Ok, it works now with 2D and 3D desactivated. Is it a bug? Or it's because Plasma 5.2 is not finished?

Thx for your help.

[loukingjr]

You never need 2D enabled for Linux as far as I know. It's mainly because Plasma 5 is using a new graphics setup, isn't finished so there are some issues.

I do have to say without 3D acceleration Plasma 5 runs as fast as any guest I have with 3D acceleration enabled. Quite a bit faster than some.