[Bug 792652] Re: ubiquity crashed with ValueError in command(): I/O operation on closed file

[Jean-Baptiste Lallement]

I always reproduce the crash on bare hardware (Mac booted from CD) not
in VMs when I quit Ubiquity from the manual partitioner. It doesn't
depend on the speed at which I quit Ubiquity.

Barry let me know if I can provide more information. You can also test
from a Live session on your Mac since the test is non-destructive (as
long as you don't click on 'continue' in partman ;))

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Title:
  ubiquity crashed with ValueError in command(): I/O operation on closed
  file

Status in “ubiquity” package in Ubuntu:
  Triaged
Status in “ubiquity” source package in Oneiric:
  Won't Fix
Status in “ubiquity” source package in Precise:
  Triaged

Bug description:
  Binary package hint: ubiquity

  I got this problem when I was trying clicking the Install Ubuntu 11.04
  from the desktop on Asus 1215B red.

  TEST CASE
  1. Boot from a Live media
  2. At Ubiquity Greeter click on 'Try Ubuntu' and start a live session
  3. Start ubiquity
  4. Proceed to step 'Prepare'
  5. Click on 'Continue' then quickly click on 'Quit' on the main dialog then 'Quit' on the confirmation dialog before the UI switches to step 'partman'

  Note:
  Timing seems important and you need to repeat steps 3 to 5 and clicking at slightly different moment until it crashes. It is easier to reproduce on low-end hardware than VM.
  Also I reproduced it more often with other languages than english.

  ACTUAL RESULT
  This crash or UI hang

  ProblemType: Crash
  DistroRelease: Ubuntu 11.04
  Package: ubiquity 2.6.10
  ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
  Uname: Linux 2.6.38-8-generic x86_64
  NonfreeKernelModules: wl
  Architecture: amd64
  Date: Fri Jun  3 21:24:09 2011
  ExecutablePath: /usr/lib/ubiquity/bin/ubiquity
  InterpreterPath: /usr/bin/python2.7
  LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  ProcCmdline: /usr/bin/python /usr/lib/ubiquity/bin/ubiquity gtk_ui
  ProcEnviron: Error: [Errno 13] Permission denied: '/proc/3371/environ'
  PythonArgs: ['/usr/lib/ubiquity/bin/ubiquity', 'gtk_ui']
  SourcePackage: ubiquity
  Title: ubiquity crashed with ValueError in command(): I/O operation on closed file
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

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