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[Sergio Callegari <sergio.callegari@xxxxxxxxx>]

Brad, I cannot provide log files:

- If I boot with the zip disk the machine goes to 60% iowait and processes dealing with I/O start hunging. I do not want to risk my data just to try running apport (that would likely fail anyway).
- If I boot without the zip disk, the log files cannot report anything because the machine works.

I have already spent one whole night, diagnosing this issue down to the
ATAPI zip drive.

So I reset the bug as new.  Please confirm it is propagated upstream.

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https://bugs.launchpad.net/bugs/1451277

Title:
  Extremely high IOWait and processes hungs after utopic->vivid upgrade

Status in linux package in Ubuntu:
  New

Bug description:
  On Kubuntu, 64 bit AMD Phenom2 machine with 4 cores, and old (Geoforge 7025) Nvidia graphics.
  Using LVM. Machine also has a 2 disk software raid (mirroring).

  The machine was working fine before the upgrade, now it is almost
  impossible to use it... I see Wait in Top always above 60%; in dmesg
  after a few minutes that the machine is up even if the machine does
  nothing. I see hung processes (typically vgs, but occasionally also
  others).  LVM related commands (e.g. lvdisplay) almost always hung at
  the terminal. I also see in ps some kernel workers almost constantly
  stuck in D state. Also, the machine takes ages to shutdown.

  Issue remains there also if I disable X (switch off the X login
  manager, sddm) and check at the console.

  Sorry I cannot provide details with apport, but the machine has been
  switched off and I will not be able to take it up again before a few
  days from now.

  The symptom I am observing may also be a sign of failing hardware, so
  please leave the bug as unconfirmed until I make some more tests or
  someone provide details on similar issues. In the meantime I would
  like to see if others are experiencing a similar serious issue. Is
  there anything specific that has changed between utopic and vivid, I
  should look into?

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