package udev 228-4ubuntu2 failed to install/upgrade: Service mountkernfs has to be enabled to start service udev

[gdfmyus]

See comment #2 for details. If you ran into this, please run

   sudo update-rc.d mountkernfs.sh defaults
   sudo apt-get -f install

This cleans up after that error.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: udev 228-4ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-2.16-generic 4.4.0
Uname: Linux 4.4.0-2-generic x86_64
ApportVersion: 2.19.4-0ubuntu2
Architecture: amd64
Date: Mon Feb 1 14:20:14 2016
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2016-01-30 (2 days ago)
InstallationMedia: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160127.1)
MachineType: HP-Pavilion AY581AA-ABA 300-1120
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-2-generic root=UUID=9b45e1a3-2c6f-4c53-b5e6-0934c8b08dc1 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1
 apt 1.1.10
SourcePackage: systemd
Title: package udev 228-4ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/14/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 5.12
dmi.board.name: JESSE
dmi.board.vendor: PEGATRON CORPORATION
dmi.board.version: 1.04
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr5.12:bd03/14/2011:svnHP-Pavilion:pnAY581AA-ABA300-1120:pvr:rvnPEGATRONCORPORATION:rnJESSE:rvr1.04:cvnHewlett-Packard:ct3:cvrChassisVersion:
dmi.product.name: AY581AA-ABA 300-1120
dmi.sys.vendor: HP-Pavilion

[Martin Pitt (pitti)]

https://launchpad.net/ubuntu/+source/init-system-helpers/1.26ubuntu1 broke update-rc.d for about half a day in Ubuntu. If you installed/upgraded during that time or with an image built in that time, you'd get an effect like this. Can you please run

   sudo update-rc.d mountkernfs.sh defaults
   sudo apt-get -f install

This should clean up after that error.