RTR3InitEx failed with rc=-1912 (rc=-1912)

[Ralf Mardorf]

On Fri, 22 Jan 2021 21:24:46 +0100, Ralf Mardorf wrote:
>To build the kernels reinstall the Virtualbox package/s, since Oracle
                     ^ modules ;)
>might not build using dkms and from Ubuntu repositories they
>automatically should get build using dkms
                                          ^when installing the
                                           Virtualbox package/s