[Bug 1170911] Re: "mount: / is busy" error during shutdown (not network-manager)

[David Matějček]

*** This bug is a duplicate of bug 1181789 ***
    https://bugs.launchpad.net/bugs/1181789

The last message from me - now everything works.
After all steps before finally I did this:
1) Removed the TV card Winfast DTV2000H, that was unused maybe two years and I forgot it is there :-) . Seems that something between the Linux and the card does not handle the ACPI events correctly.
Then I could sleep the computer, but not wake up - sometimes absolutly, sometimes it started into KDE login screen, could move with mouse, but could not write anything.
2) Upgraded kernel, now uname -a writes this:
Linux dmatej 3.8.0-31-generic #46-Ubuntu SMP Tue Sep 10 20:03:44 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
- then I could switch to another session via CTRL+ALT+F1, kill KDE and start again - sometimes it worked after three cycles of killing.
3) Installed the nvidia-current-updates package again (3.0.4). It is three days and everything works as I want. Happyend :-)

I think in my case problems was caused by several reasons, somehow
related. I wrote this only to report that my problem is solved and how.

This issue is probably duplicate as the previus comment says. See
https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/1181789

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https://bugs.launchpad.net/bugs/1170911

Title:
  "mount: / is busy" error during shutdown (not network-manager)

Status in “sysvinit” package in Ubuntu:
  Confirmed

Bug description:
  When I halt Ubuntu ugly (but probably harmless) error messages about
  unmounting several filesystems (including the root) are displayed or
  the screen.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: mountall 2.48build1
  ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
  Uname: Linux 3.8.0-19-generic i686
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: i386
  Date: Sat Apr 20 11:08:07 2013
  InstallationDate: Installed on 2013-02-05 (73 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha i386 (20130205)
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: mountall
  UpgradeStatus: No upgrade log present (probably fresh install)

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