[Bug 1686045] Re: Upgrade from 16.10 to 17.04 failed due to missing ./xorg_fix_proprietary.py

[Mark Thornton]

** Attachment added: "main.log"
   https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1686045/+attachment/4875274/+files/main.log

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Title:
  Upgrade from 16.10 to 17.04 failed due to missing
  ./xorg_fix_proprietary.py

Status in ubuntu-release-upgrader package in Ubuntu:
  Incomplete

Bug description:
  2017-04-25 09:50:11,893 ERROR Exception during pm.DoInstall()
  Traceback (most recent call last):
    File "/tmp/ubuntu-release-upgrader-uhhrnz4x/DistUpgrade/DistUpgradeView.py", line 225, in run
      res = pm.do_install(self.writefd)
  apt_pkg.Error: E:Sub-process /usr/bin/dpkg returned an error code (1)
  2017-04-25 09:50:11,916 ERROR SystemError from cache.commit(): installArchives() failed
  2017-04-25 09:50:11,917 ERROR found exception: 'E:Sub-process /usr/bin/dpkg returned an error code (1)'
  2017-04-25 09:50:20,219 DEBUG Running PostInstallScript: './xorg_fix_proprietary.py'
  2017-04-25 09:50:20,225 ERROR got error from PostInstallScript ./xorg_fix_proprietary.py (g-exec-error-quark: Failed to execute child process "./xorg_fix_proprietary.py" (No such file or directory) (8))

  
  Graphics is NVidia, but I recently swapped to the the open source driver.

  Release now appears as though the upgrade completed:
  > lsb_release -rd
  Description:	Ubuntu 17.04
  Release:	17.04

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