[Bug 1027648] Re: ubiquity crashed with ValueError in command(): I/O operation on closed file.

[Thomas Sisson]

I believe the ISO image for the Ubuntu 12.04 LTS that I had was either
defective or missing the appropriate rescue options. Many people have
posted that they receive the error that rescue cannot find the Linux
Kernel. I know I have a Linux Kernel, because it boots. I'm trying to
run Rescue because it won't boot to the desktop.

1. I booted from the Live CD. 
2. I started installation from the install shortcut.
3. I chose "Choose another option" hoping that it might r.ecognize my installation and give me an option to fix it.
4. It went straight to select partions with no way to choose other options besides defining my partitions.
5. There was no Cancel optioin, so I closed the window.

For those who have this exact issue. The only suggestion is to do what I
plan to do. Either I will reinstall from scratch, or I will download yet
another rescue image to repair my installation.

For those who care or are interested, it quit working after I tried to
install LightDM

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

Status in “ubiquity” package in Ubuntu:
  Fix Released
Status in “ubiquity” source package in Precise:
  Fix Released
Status in “ubiquity” source package in Quantal:
  Fix Released

Bug description:
  [Test Case] See bug 792652.  [I'm not sure why this wasn't marked as a
  duplicate originally. --cjwatson]

  I use Ubuntu12.10 Qantal daily build amd64 from 22.7.2012.

  This occures on a installation try from a usb stick.

  To be exactly on clicking the abort button on the Install Type
  dialog(Whole disk, paritioning...).

  This is the first time that I observe this on this daily build(some
  runs this day).

  So, I have no reliable reproducing procedure.

  ProblemType: Crash
  DistroRelease: Ubuntu 12.10
  Package: ubiquity 2.11.17
  ProcVersionSignature: Ubuntu 3.5.0-5.5-generic 3.5.0-rc7
  Uname: Linux 3.5.0-5-generic x86_64
  ApportVersion: 2.4-0ubuntu4
  Architecture: amd64
  CasperVersion: 1.320
  Date: Sun Jul 22 15:11:28 2012
  ExecutablePath: /usr/lib/ubiquity/bin/ubiquity
  InstallCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
  InterpreterPath: /usr/bin/python3.2mu
  LiveMediaBuild: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120718.1)
  ProcCmdline: /usr/bin/python3 /usr/lib/ubiquity/bin/ubiquity gtk_ui
  ProcEnviron: Error: [Errno 13] Permission denied: '/proc/15722/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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