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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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