Comment # 1 on bug 1060072 from Larry Finger

I have made the suggested changes. Thanks for the clear description of the
problem.

The commit message for the new version are as follows:

- Make changes suggested in bsc#1060072
  The specific changes are: 
  (1) Remove the test in vboxdrv.sh as the script tests for the wrong file.
This is safe because
      if the package is not installed, the script will not be there.
  (2) Move VBoxDbg.so to package virtualbox-qt. With this change, packages
libQt5Core, libQt5Gui
      and libQt5Widgets are no longer needed with package virtualbox. As a
result, a text-only 
      server no longer needs to load QT to support headless virtual machines.

I believe that these two changes fix your issue.