Comment 0 for bug 1827753

 System information
====================

    $ lsb_release -rd
    Description: Ubuntu 18.04.2 LTS
    Release: 18.04

    $ apt-cache policy udev
    udev:
      Installed: 237-3ubuntu10.21
      Candidate: 237-3ubuntu10.21
      Version table:
     *** 237-3ubuntu10.21 500
            500 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
            100 /var/lib/dpkg/status
         237-3ubuntu10.19 500
            500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages
         237-3ubuntu10 500
            500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages

 Problem
=========

The `udev` package includes `/lib/modprobe.d/fbdev-blacklist.conf`, a configuration file blacklisting several kernel modules. It's not listed as a configuration file in the package, though:

    $ cat /var/lib/dpkg/info/udev.conffiles
    /etc/init.d/udev
    /etc/udev/udev.conf

This means that, if I want to go ahead and use the `sisfb` kernel module, for example, any updated version of `udev` that's installed will again blacklist the kernel module, which doesn't work well when the system is being used by someone very new to computers.

I can't avoid that by simply telling APT to leave configuration files alone because a `.conf` file technically isn't a configuration file. Also, `chattr +i /lib/modprobe.d/fbdev-blacklist.conf` causes APT to take extra effort to repair things when the end user agrees to an install in the GUI reminder of new software.

 Request
=========

Please mark `/lib/modprobe.d/fbdev-blacklist.conf` as a configuration file in `udev`.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: udev 237-3ubuntu10.21
ProcVersionSignature: Ubuntu 4.15.0-47.50-generic 4.15.18
Uname: Linux 4.15.0-47-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
CurrentDesktop: XFCE
CustomUdevRuleFiles: 70-snap.core.rules 70-snap.cnctsun.rules 70-snap.cncra2yr.rules 70-snap.cncra.rules 60-vboxdrv.rules
Date: Sat May 4 21:51:42 2019
InstallationDate: Installed on 2018-12-27 (128 days ago)
InstallationMedia: Xubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 020: ID 046d:c077 Logitech, Inc. M105 Optical Mouse
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. XPS 13 9360
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-47-generic root=/dev/mapper/xubuntu--vg-root ro quiet splash vt.handoff=1
SourcePackage: systemd
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/27/2018
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 2.10.0
dmi.board.name: 0839Y6
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr2.10.0:bd09/27/2018:svnDellInc.:pnXPS139360:pvr:rvnDellInc.:rn0839Y6:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.family: XPS
dmi.product.name: XPS 13 9360
dmi.sys.vendor: Dell Inc.