Ubuntu
virtualbox package

Virtual box broken after kernel update to 5.8

Asked by Pharma Eng on 2021-01-14

Hi, I got a problem in oracle Virtual box after update the kernel version from 5.4.0-XX to version 5.8.XXX on Focal Fossa. After system restart it can not load Windows virtual machine. Warning is: virtualbox-dkms doesn not have kernel module sources and has to be reinstalled. So after reinstall Virtual box is not working again. Tried some configuration without any success. Only good thing was that I have backup and after installing Ubuntu 18.04 virtual machine is now working again on a kernel 5.4.0-60. Does someone else got similar problem and where could be the problem? My hardware is i5-2430M CPU @ 2.40GHz × 4 , HD Graphics 3000, 8GB RAM, SSD 500. Something else: Kernel 5.8 delayed the system performance almost two times during the boot.

Question information

Language:: English Edit question

Status:: Solved

For:: Ubuntu virtualbox Edit question

Assignee:: No assignee Edit question

Solved by:: Manfred Hampl

Solved:: 2021-01-14

Last query:: 2021-01-14

Last reply:: 2021-01-14

Link existing bug

This question was reopened

2021-01-14 by Pharma Eng

Manfred Hampl (m-hampl) said on 2021-01-14:

Probably Bug #1901904 (solution already available in focal-proposed)

Which version of Virtualbox do you have installed and from which source (Ubuntu repositories or virtualbox.org)?

Pharma Eng (pharmaloop-deactivatedaccount) said on 2021-01-14:

Virtual box v. 6.1.16 with same extension pack version.

Pharma Eng (pharmaloop-deactivatedaccount) said on 2021-01-14:

Sorry, 6.1.16 r140961 (Qt5.9.5), installed from virtualbox.org as binary package.

Manfred Hampl (m-hampl) said on 2021-01-14:

What output do you receive for the command

vboxmanage --version

Pharma Eng (pharmaloop-deactivatedaccount) said on 2021-01-14:

Output was 6.1.16r140961. But I already replaced Focal fossa 20.04 to Bionic beaver 18.04 and restored VB from backup. So I can not check anymore some other details.