[Bug 1170911] Re: umount error messages during shutdown

[Grant Sinclair]

I also think there are posts for different problems pointing at this
bug. I followed one of them here and added my name to the list. But now
I too am not sure of this and have removed myself as being affected by
it.

Here are my experiences, in case they help. I have a Core 2 Duo desktop
and a GeForce GTX 640 SE video card. I initially performed a clean 13.04
64 bit install, with no encryption and no LVM. I used the NVidia driver
(310 in my case, since that's the one labelled "tested") as the Nouveau
driver seemed to cause system instability. I had problems with hanging,
both on restart and shut down about as often as Thomas above. Sometimes,
when the system failed to shut down, I had the mount errors but
sometimes it would hang without them. The system was otherwise stable.

I then reinstalled Ubuntu, this time as 32 bit, just to see what
happened. I was able to stay with the Nouveau driver as I had no system
instability with it under 32 bit. I did not see any umount/mount errors
but less logging to the screen seems to occur with the Nouveau driver,
so perhaps I was getting them but was unaware of it. I had no
restart/shutdown problems at all. Using the system under this
configuration was great - everything seemed to "just work".

I have now tried the NVidia driver (310 again), just to see what
happened with it under 32 bit. I find that under 32 bit Ubuntu, it is
the NVidia driver causing system instability (reverse of my 64 bit
situation), to the point where the system is not really stable enough to
use. I have also experienced one hung shutdown attempt (my first since
going 32 bit). I also saw cases of the umount/mount errors, though as I
said above, perhaps they were also there under Nouveau but just not
visible.

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

Title:
  umount error messages during shutdown

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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