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[Launchpad Bug Tracker <1363492@xxxxxxxxxxxxxxxxxx>]

[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

** Changed in: linux (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1363492

Title:
  Parallel port not working since kernel 3.11 on ThinkCentre Edge 72

Status in linux package in Ubuntu:
  Expired

Bug description:
  When upgrading an Ubuntu 12.04 installation to the trusty hwe package
  I noticed that the parallel port printer was not working anymore. The
  reason is the parallel port which cannot be written to anymore. The
  printer cannot be detected and even an echo "hello" > /dev/lp0 with an
  occupied device message. The kernel log contains many errors "DMA
  write timed out" - they do only appear in the kernel versions with
  which the parallel port is not working. It is certainly related to the
  parport problem.

  Reverting to the raring kernel 3.8 makes the parallel port work again.
  The saucy 3.11 kernel is affected by the problem to. The original
  precise kernel was not working either.

  The ThinkCentre Edge 72 is an Intel IvyBridge based system.

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