[Bug 1063292] Re: Reinstall of Ubuntu appears to succeed but reports crash in the end

[melchiaros]

In UbiquitySyslog.txt:

Oct  7 15:53:23 ubuntu plugininstall.py: Could not restore packages from the previous install:
Oct  7 15:53:23 ubuntu plugininstall.py: Traceback (most recent call last):
Oct  7 15:53:23 ubuntu plugininstall.py:   File "/usr/share/ubiquity/plugininstall.py", line 223, in run
Oct  7 15:53:23 ubuntu plugininstall.py:     self.apt_clone_restore()
Oct  7 15:53:23 ubuntu plugininstall.py:   File "/usr/share/ubiquity/plugininstall.py", line 1516, in apt_clone_restore
Oct  7 15:53:23 ubuntu plugininstall.py:     preexec_fn=install_misc.debconf_disconnect)
Oct  7 15:53:23 ubuntu plugininstall.py:   File "/usr/lib/python2.7/subprocess.py", line 511, in check_call
Oct  7 15:53:23 ubuntu plugininstall.py:     raise CalledProcessError(retcode, cmd)
Oct  7 15:53:23 ubuntu plugininstall.py: CalledProcessError: Command '['apt-clone', 'restore-new-distro', '/target/ubiquity-apt-clone/apt-clone-state-ubuntu.tar.gz', 'precise', '--destination', '/target']' returned non-zero exit status 1
Oct  7 15:53:23 ubuntu plugininstall.py: 
Oct  7 15:53:59 ubuntu activate-dmraid: No Serial ATA RAID disks detected

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https://bugs.launchpad.net/bugs/1063292

Title:
  Downgrade from 12.10 to 12.04 appears to succeed but reports crash in
  the end

Status in “ubiquity” package in Ubuntu:
  Confirmed

Bug description:
  Reinstalling Ubuntu 12.04 over 12.10, including;
   - reuse of / mount
   - moving swap space
   - reuse of /home mount

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: ubiquity 2.10.20
  ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24
  Uname: Linux 3.2.0-29-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.0.1-0ubuntu12
  Architecture: amd64
  CasperVersion: 1.315
  Date: Sun Oct  7 16:54:16 2012
  InstallCmdLine: noprompt cdrom-detect/try-usb=true file=/cdrom/preseed/ubuntu.seed boot=casper persistent initrd=/casper/initrd.lz splash -- BOOT_IMAGE=/casper/vmlinuz
  LiveMediaBuild: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
  ProcEnviron:
   LANGUAGE=en_GB.UTF-8
   TERM=unknown
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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