Comment 3 for bug 1743849

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