[Bug 984373] Re: update-notifier setup hangs during installation of Precise with ubiquity

[Jean-Baptiste Lallement]

I have no confirmation but it seems to be caused by a host at
archive.canonical.com being slow to respond.

I have no firewall blocking data files from being downloaded and use a proxy that doesn't cache tar.gz files.
>From the logs of the proxy, response time from archive.canonical.com was 241s, then 49s on next try (file being downloaded was adobe-flashplugin_11.2.202.233.orig.tar.gz)

I ran 100 iterations of the following command today with and without proxy:
rm /var/lib/update-notifier/package-data-downloads/flashplugin-installer; apt-get install --reinstall update-notifier-common

None of them failed and I couldn't reproduce the hang. Average response
times are below 5s for scandium.canonical.com and between 7s and 10s for
sadalbari.canonical.com.

Here is an excerpt of my proxy's logs for yesterdays tries:
TimeStamp    ResponseTime (ms)    Peer
2012-04-17 11:14:07 240914 91.189.92.191
2012-04-17 11:19:42  49232 91.189.92.191
2012-04-17 11:34:11   4364 91.189.88.33
2012-04-17 11:39:13   4591 91.189.88.33
2012-04-17 11:49:27   4501 91.189.88.33
2012-04-17 12:07:56   8955 91.189.92.191
2012-04-17 13:02:37  10554 91.189.92.191

My guess is that remote host was slow to respond/unresponsive which
froze the downloader.

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https://bugs.launchpad.net/bugs/984373

Title:
  update-notifier setup hangs during installation of Precise with
  ubiquity

Status in “update-notifier” package in Ubuntu:
  Confirmed
Status in “update-notifier” source package in Precise:
  Confirmed

Bug description:
  I'm installing the precise beta onto a lenovo thinkcentre m91p.  I've
  done 2 installs from the same CD that ran to completion, one of them
  earlier today on the same disk.  This time, the installer got up to
  "Installing system" then reported an invalid framebuffer.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: ubiquity 2.10.4
  ProcVersionSignature: Ubuntu 3.2.0-20.33-generic 3.2.12
  Uname: Linux 3.2.0-20-generic x86_64
  ApportVersion: 1.95-0ubuntu1
  Architecture: amd64
  CasperVersion: 1.312
  Date: Tue Apr 17 16:55:28 2012
  InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity initrd=/casper/initrd.lz quiet splash --
  LiveMediaBuild: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328)
  ProcEnviron:
   TERM=linux
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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