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[Launchpad Bug Tracker <1419424@xxxxxxxxxxxxxxxxxx>]

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Hi,

on my parent's computer, I perform "sudo apt-get upgrade" to install new
packages, including a new Ubuntu kernel.

While the system reboots, it hangs on after detecting primary/secondary
disks (HDD, DVD reader, etc...).


I found the issue: the /etc/modprobe.d/blacklist.conf file is not longer taken into account after upgrade.


Indeed, when I installed Ubuntu some month/year ago, I had to blacklist some modules due to conflit with the network card, i.e. I added some entries at the end of the /etc/modprobe.d/blacklist.conf file.

After the upgrade (including kernel upgrade), the system no longer boots.
1) I remove the network card => the system boots
2) After ubuntu starts, I run "lsmod" and discover that some module that I previouly blacklisted in the /etc/modprobe.d/blacklist.conf file are loaded.
3) So, I run the following command to disabled them, taking into account the /etc/modprobe.d/blacklist.conf file => sudo update-initramfs -u
4) I re-insert the network card, reboots the computer => the system boots. Problem is solved!


Thus, I think the "sudo update-initramfs -u" command must be automatically run after a kernel upgrade to take into account the blacklist.conf file. Otherwise, it is a blocking issue for many people that are not experts...

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: update-manager 1:0.156.14.17
ProcVersionSignature: Ubuntu 3.2.0-76.111-generic 3.2.66
Uname: Linux 3.2.0-76-generic i686
ApportVersion: 2.0.1-0ubuntu17.8
Architecture: i386
Date: Sun Feb  8 12:41:42 2015
GsettingsChanges:
 com.ubuntu.update-manager first-run false
 com.ubuntu.update-manager launch-time 1423393571
 com.ubuntu.update-manager show-details true
 com.ubuntu.update-manager window-height 500
 com.ubuntu.update-manager window-width 600
InstallationMedia: Xubuntu 12.04.3 LTS "Precise Pangolin" - Release i386 (20130820)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=fr:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
Symptom: ubuntu-release-upgrader-core
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete


** Tags: apport-bug dist-upgrade i386 precise
-- 
after system update , boot stops after detecting master/slave devices (blacklist.conf issue)
https://bugs.launchpad.net/bugs/1419424
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