Package doesn't rebuild kernel module with new kernel install

[EricDP]

The last several kernel updates, after reboot my rtl8812au device was offline. AFter I did a manual re-install (apt install --reinstall rtl8812au) it came back to life. As this is a dkms package, shouldn't it auto-build on a new kernel?

Package is: rtl8812au-dkms/artful,artful,now 4.3.8.12175.20140902+dfsg-0ubuntu7 all [installed]
  dkms source for the r8812au network driver

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: rtl8812au-dkms 4.3.8.12175.20140902+dfsg-0ubuntu7
ProcVersionSignature: Ubuntu 4.13.0-25.29-generic 4.13.13
Uname: Linux 4.13.0-25-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Wed Jan 17 10:04:57 2018
InstallationDate: Installed on 2017-11-23 (55 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
PackageArchitecture: all
SourcePackage: rtl8812au
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Jeremy (wa113y3s)]

The fix is to change the MAKE line in dkms.conf, as it works correctly when it is

MAKE[0]="'make' all KVER=${kernelver}"

When it uses MAKE="'make' all" it compiles against the old kernel and you see things like

modinfo 8812au | egrep 'file|ver'
filename: /lib/modules/4.4.0-112-generic/updates/dkms/8812au.ko
version: v4.3.8_12175.20140902
description: Realtek Wireless Lan Driver
srcversion: 5E9D12706FAF7E2BB4F284E
vermagic: 4.4.0-109-generic SMP mod_unload modversions

The vermagic kernel version doesn't match the kernel in the file name

[Reinhard Koehn (rekoehn)]

This seems to be a duplicate of bug 1705820 and bug 1804832