[Bug 1374193] Re: ubiquity crashed with TypeError in make_error_string(): sequence item 0: expected str instance, NoneType found

[Jason Gerard DeRose]

Okay, figured this out, more or less.

I was mocking DMI information in qemu using:

-smbios file=smbios_type_1.bin

The dump was from actual hardware, but under the seemingly more strict
parsing done either by the newer kernel and/or dmidecode, the "system-
product-name" ends up with a hugely long warning (and some junk
characters as well, I believe).

I can likewise reproduce this bug on the actual hardware I got the
dmidecode dump from, so it has nothing to do with running under qemu, as
far as I can tell.

Something different in the code paths used for a normal install vs OEM
install means Ubiquity crashes only when doing an OEM install.

I worked around the problem by switching to a dmidecode dump from newer
hardware.

This is probably a very low priority bug as it doesn't effect normal end
user installs.

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Title:
  ubiquity crashed with TypeError in make_error_string(): sequence item
  0: expected str instance, NoneType found

Status in “ubiquity” package in Ubuntu:
  New

Bug description:
  Testing latest daily ISO under KVM (hosted on up-to-date Utopic).

  Steps I took:

  1) Choose "Install Ubuntu"
  2) Hit F6, then ESC, and add oem-config/enable=true to work around lp:1371651
  3) Got this Apport crash as soon as the Ubiquity session started

  Not sure if this is related to running under KVM, will try on hardware
  and report back shortly.

  ProblemType: Crash
  DistroRelease: Ubuntu 14.10
  Package: ubiquity 2.19.8
  ProcVersionSignature: Ubuntu 3.16.0-17.23-generic 3.16.3
  Uname: Linux 3.16.0-17-generic x86_64
  ApportVersion: 2.14.7-0ubuntu2
  Architecture: amd64
  CasperVersion: 1.344
  Date: Thu Sep 25 22:25:07 2014
  ExecutablePath: /usr/lib/ubiquity/bin/ubiquity
  InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity initrd=/casper/initrd.lz quiet splash oem-config/enable=true --
  InterpreterPath: /usr/bin/python3.4
  LiveMediaBuild: Ubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20140923)
  ProcCmdline: /usr/bin/python3 /usr/lib/ubiquity/bin/ubiquity --only
  ProcEnviron: Error: [Errno 13] Permission denied: '/proc/2273/environ'
  PythonArgs: ['/usr/lib/ubiquity/bin/ubiquity', '--only']
  SourcePackage: ubiquity
  Title: ubiquity crashed with TypeError in make_error_string(): sequence item 0: expected str instance, NoneType found
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

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