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["Yang Kun \(YK\)" <kun.yang@xxxxxxxxxxxxx>]

** Changed in: linux (Ubuntu)
     Assignee: Haitao Zhang (minipanda) => Hui Wang (hui.wang)

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https://bugs.launchpad.net/bugs/1126600

Title:
  [Lenovo L420]: System hangs at random spots during 12.04.2 install

Status in “linux” package in Ubuntu:
  Confirmed
Status in “linux” source package in Precise:
  Confirmed

Bug description:
  [Lenovo L420]: System hangs at random spots during 12.04.2 install

  Problem:

  This machine was previously blocked for certification due to bug
  #990110. I downloaded the requested BIOS update from lenovo's site
  version: 1.20 and attempting an install via a live iso. While
  attempting the install the system would intermittently lose touchpad
  functionality and lock up. It will eventually stop responding to all
  keyboard and mouse activity and the progress indicator will halt
  implying the system has stopped. At this point you cannot switch to an
  alternate tty.

  Reproducible: yes

  Image used:
  b436b6d4c7de064652f30d783bda5b4e  ubuntu-12.04.2-desktop-amd64.iso

  checksum from releases.ubuntu.com:
  b436b6d4c7de064652f30d783bda5b4e *ubuntu-12.04.2-desktop-amd64.iso

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