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apport-collect 1787411

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This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

** Tags added: xenial

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https://bugs.launchpad.net/bugs/1787411

Title:
  doc-base post-installation script breaks do-release-upgrade from 16.04
  to 18.04

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  On one of my computers, do-release-upgrade from 16.04 LTS to 18.04 LTS
  broke mid-update.

  Logfile seems to indicate that the "doc-base" package is to blame:

  2018-08-16 14:02:43,476 INFO cache.commit()
  2018-08-16 14:02:43,476 DEBUG failed to SystemUnLock() (E:Not locked)
  2018-08-16 14:12:31,145 ERROR got an error from dpkg for pkg: 'doc-base': 
'installed doc-base package post-installation script subprocess returned error 
exit status 10'
  2018-08-16 14:12:31,146 DEBUG running apport_pkgfailure() doc-base: installed 
doc-base package post-installation script subprocess returned error exit status 
10
  2018-08-16 14:12:32,550 ERROR Exception during pm.DoInstall()
  Traceback (most recent call last):
    File 
"/tmp/ubuntu-release-upgrader-7ytclj_8/DistUpgrade/DistUpgradeView.py", line 
220, in run
      res = pm.do_install(self.writefd)
  SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1)
  2018-08-16 14:12:32,580 ERROR SystemError from cache.commit(): 
installArchives() failed
  2018-08-16 14:12:32,581 ERROR found exception: 'E:Sub-process /usr/bin/dpkg 
returned an error code (1)'
  2018-08-16 14:12:51,407 DEBUG Running PostInstallScript: 
'./xorg_fix_proprietary.py'

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