[Bug 1818148] Missing required logs.

This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:

apport-collect 1818148

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1818148

Title:
virtualbox-guest-x11 does not work with 4.4.0-143-generic from xenial-
proposed

Status in linux package in Ubuntu:
Incomplete
Status in virtualbox package in Ubuntu:
New

Bug description:
Steps to reproduce:
1. Have 16.04 LTS installed
2. Enable xenial-proposed repository
3. Install `virtualbox-guest-x11` package

Expected results:
* virtualbox-guest-x11 is working as before

Actual results:
* virtualbox-guest-x11 does not work, shows message after login: "VBoxClient: Failed to connect to the VirtualBox kernel service, rc=VERR_ACCESS_DENIED"

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: virtualbox-guest-x11 5.1.38-dfsg-0ubuntu1.16.04.2
ProcVersionSignature: Ubuntu 4.4.0-143.169-generic 4.4.170
Uname: Linux 4.4.0-143-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CurrentDesktop: MATE
Date: Fri Mar 1 00:38:30 2019
InstallationDate: Installed on 2018-08-07 (205 days ago)
InstallationMedia: Ubuntu-MATE 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
SourcePackage: virtualbox
UpgradeStatus: No upgrade log present (probably fresh install)

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