kernel-packages team mailing list archive

[Chris Bainbridge <chris.bainbridge@xxxxxxxxx>]

I'm attaching a patch for DistUpgradeQuirks.py that aborts the upgrade
if the pae flag  is not in /proc/cpuinfo (the same check as used by the
kernel package on install). It would be a good idea to release this fix
before the 14.04 LTS is released in order to save thousands of people
from ending up with a broken system when they try to upgrade from 12.04
LTS to 14.04 LTS

** Patch added: "update_manager_quirks_pae.patch"
   https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1160346/+attachment/4004690/+files/update_manager_quirks_pae.patch

** Tags added: patch

** Tags removed: quantal

** Tags added: pae

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1160346

Title:
  do-release-upgrade from Ubuntu 12.04 on Pentium-M fails, breaks system
  without any warning (This kernel does not support a non-PAE CPU)

Status in “linux” package in Ubuntu:
  Invalid
Status in “ubuntu-release-upgrader” package in Ubuntu:
  Triaged

Bug description:
  Attempting to upgrade from Precise with a non-PAE kernel will result
  in a failed upgrade. do-release-upgrade should check whether the user
  is using a non-PAE kernel and refuse to run, rather than upgrading to
  a broken system with no installed kernel.

  After downloading 1.5GB+ of data and over 1000 new packages, the
  upgrade will eventually report failure. Looking through the logs there
  is no kernel installed because of the error "This kernel does not
  support a non-PAE CPU.":

  Selecting previously unselected package linux-image-3.5.0-26-generic.^M
  Unpacking linux-image-3.5.0-26-generic (from .../linux-image-3.5.0-26-generic_3.5.0-26.42_i386.deb) ...^M
  This kernel does not support a non-PAE CPU.^M
  dpkg: error processing /var/cache/apt/archives/linux-image-3.5.0-26-generic_3.5.0-26.42_i386.deb (--unpack):^M
   subprocess new pre-installation script returned error exit status 1^M
  No apport report written because MaxReports is reached already

  Related bugs:

  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/897786 Kernel is dropping non-PAE flavour
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1068862 upgrade from 12.04 to 12.10 on a sans-pae CPU leaves kernel broken

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1160346/+subscriptions