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[Mark Preston <emp2008@xxxxxxx>]

There is no more information than what I can add here. I installed
Ubuntu ver. 12.04LTS (Precise Pangolin) about a week ago
(1-August-2013). I used the BTRFS file system. On first re-boot after
installation, I was offered 3 choices:

(S)kip -- (I)gnore -- (M)ount Manually.

Selecting skip hung the boot and the OS never loaded.

Selecting the IGNORE for both / and /home (those word or characters do
appear on-screen) loads the OS and I have a working computer. Since this
problem is at boot time, I believe that the Launchpad Reporting tool-
mechanism isn't able to report as it's not loaded.

I am in the habit of closing all the open files, directory folders and
applications (e.g., Firefox), before I issue the shutdown command. When
the shutdown is issued, the OS seems to unwind itself very quickly - a
few seconds only - but the power does not shut down. I have to press the
power button a few seconds and the computer is then turned off. I have
been doing this about 8 days or so and have not seen another problem. I
backup daily.

If you have questions post them to me. I can try to find the kernel.log
or whatever, but I don't know where to look or how much to post without
your help.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1088185

Title:
  kernel hangs on boot with btrfs

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Since kernel 3.5.0-17-generic was installed on my system, I had
  trouble with booting into my system, only 1 of 10 times it bootet
  correctly.

  I had tried to understand the problem and got mislead to the wifi-
  drivers, but instead it was the btrfs-driver which had problems with
  the root partition beeing btrfs. I had to hard reset my system several
  times and ended in complete data loss as the btrfs got corruptet
  later.

  I changed root partition to ext4 now, but I think that bug is
  interesting to you guys.

  beowulf@hive:~$ lsb_release -rd
  Description:	Ubuntu 12.10
  Release:	12.10
  beowulf@hive:~$ apt-cache policy btrfs-tools
  btrfs-tools:
    Installiert: 0.19+20120328-7ubuntu1
    Kandidat:    0.19+20120328-7ubuntu1
    Versionstabelle:
   *** 0.19+20120328-7ubuntu1 0
          500 http://de.archive.ubuntu.com/ubuntu/ quantal/main amd64 Packages
          100 /var/lib/dpkg/status

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: btrfs-tools 0.19+20120328-7ubuntu1
  ProcVersionSignature: Ubuntu 3.5.0-19.30-generic 3.5.7
  Uname: Linux 3.5.0-19-generic x86_64
  ApportVersion: 2.6.1-0ubuntu6
  Architecture: amd64
  Date: Sun Dec  9 15:15:15 2012
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2012-12-08 (1 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  SourcePackage: btrfs-tools
  UpgradeStatus: No upgrade log present (probably fresh install)
  --- 
  ApportVersion: 2.6.1-0ubuntu6
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  beowulf    2030 F.... pulseaudio
   /dev/snd/pcmC0D0p:   beowulf    2030 F...m pulseaudio
  DistroRelease: Ubuntu 12.10
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2012-12-08 (2 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  MachineType: LENOVO 42435GG
  MarkForUpload: True
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  ProcFB:
   0 nouveaufb
   1 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-19-generic root=UUID=b264e011-b7a9-4acd-a6ab-915ea5ec49e2 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.5.0-19.30-generic 3.5.7
  PulseList:
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory /home/beowulf not ours.
   No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.5.0-19-generic N/A
   linux-backports-modules-3.5.0-19-generic  N/A
   linux-firmware                            1.95
  Tags:  quantal
  Uname: Linux 3.5.0-19-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  dmi.bios.date: 09/15/2011
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8AET52WW (1.32 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 42435GG
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr8AET52WW(1.32):bd09/15/2011:svnLENOVO:pn42435GG:pvrThinkPadT520:rvnLENOVO:rn42435GG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 42435GG
  dmi.product.version: ThinkPad T520
  dmi.sys.vendor: LENOVO

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