Just noted, that I forgot about: /etc/dkms/kernel_install.d_dkms
$ dpkg-query --showformat='${Package}\n${Conffiles}\n' --show | awk '/^[^
]/{pkg=$1}/ obsolete$/{print pkg,$0}' | cut -d ' ' -f 1-3 | column -t
dkms /etc/dkms/kernel_install.d_dkms
dkms /etc/dkms/template-dkms-mkdeb/debian/rules
dkms /etc/dkms/template-dkms-mkdeb/debian/prerm
dkms /etc/dkms/template-dkms-mkdeb/debian/postinst
dkms /etc/dkms/template-dkms-mkdeb/debian/dirs
dkms /etc/dkms/template-dkms-mkdeb/debian/copyright
dkms /etc/dkms/template-dkms-mkdeb/debian/control
dkms /etc/dkms/template-dkms-mkdeb/debian/compat
dkms /etc/dkms/template-dkms-mkdeb/debian/changelog
dkms /etc/dkms/template-dkms-mkdeb/debian/README.Debian
dkms /etc/dkms/template-dkms-mkdeb/Makefile
dkms /etc/dkms/template-dkms-mkbmdeb/debian/rules
dkms /etc/dkms/template-dkms-mkbmdeb/debian/copyright
dkms /etc/dkms/template-dkms-mkbmdeb/debian/control
dkms /etc/dkms/template-dkms-mkbmdeb/debian/compat
dkms /etc/dkms/template-dkms-mkbmdeb/debian/changelog
dkms /etc/dkms/template-dkms-mkbmdeb/debian/README.Debian
dkms /etc/dkms/template-dkms-mkbmdeb/Makefile
