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When Ubuntu 14.04(Lubuntu) was working fine, updated latest of 14.04(Not 16.04). Then following error started to appear after login:

VBoxClient: VBoxClient (seamless): failed to start. Stage: Setting guest IRQ filter mask Error: VERR_INTERNAL_ERROR

Ignoring the above message went for upgrade to 16.04. After successful upgrade, rebooted. Now I can only see black screen after splash screen. Can anyone help with this?

Just before black screen-

Failed to start LSB: VirtualBox Additions service.

Full Video

run the following to fix your packages and system :

sudo apt install -f && sudo apt purge virtualbox-guest-additions -y && sudo apt autoremove -y && sudo apt autoclean && sudo apt full-upgrade -y && sudo reboot

This might be caused due to upgrading kernel without uninstalling virtualbox guest additions. The reason for VERR_INTERNAL_ERROR may be the same.

Go to Recovery Mode and use root shell to uninstall virtualbox guest additions, fix broken packages and complete upgrade process.

Detailed steps:

1. Hold down left Shift just after virtual box splash screen. It will take you to grub menu


2. Select the first Recovery mode menu


3. Select Enable networking. This will automatically mount disk in read/write mode


4. Select Drop to a root shell menu


5. Use following commands to finish upgrade, fix broken packages

wget http://security.ubuntu.com/ubuntu/pool/main/g/gcc-5/libstdc++6_5.4.0-6ubuntu1~16.04.10_amd64.deb
sudo dpkg -i libstdc++6_5.4.0-6ubuntu1~16.04.10_amd64.deb

sudo apt install -f

sudo apt purge virtualbox-guest-additions -y
#Or you may run /opt/VBoxGuestAdditions~/uninstall.sh and sudo dpkg -purge unity-scope-virtualbox

sudo apt autoremove -y
sudo apt autoclean
sudo apt full-upgrade -y
sudo reboot

This should solve the problem.

Remember! Never upgrade without uninstalling virtualbox guest additions, the culprit.