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[tge <tg@xxxxxxxx>]

I tried vmlinuz-3.15.0-031500rc8-generic, here is a summary:
- no crash anymore
- I just used it for a while, rebooted a few times, suspended, bluetooth on/off, this+that - no problems at all
- Possibly important difference though: Wifi dir not work, did not investigate further (could not find anything obvious in syslog)

Now the funny thing:
- booted again vmlinuz-3.13.0-27-generic - no problems anymore either ...
- tried to figure out what is now different:
  - currently no XEN in loaded kernel (before I'm quite certain that I tried both with and w/o XEN), however I never actually used it yet
  - even more interesting (?): Originally I installed 14.04 with Unity, then replaced Unity by xubuntu (well, installed xubuntu and 
    selected it at session start). After doing that, I had troubles with the GUI indicators for network, power, etc. some of them were 
    running multiple times and under different identities (as "tge" and "lightdm"), with additional background processes ... This was quite annoying but not first priority and I could not 
    imagine that there might be a relationship, therefore I also did not take any notes/screenshots/... - not more details available
    Now this is not the case anymore, possibly the frequent re-booting somehow "cleaned" the session config ... (?)

Now:
- I'll try with XEN again
- Is there any possibility that the GUI indicators (especially power (?), and if running multiple times with the associated 
  background services) have the capability of causing such behavior?
Other ideas?

Many thx + regards,
  tge

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https://bugs.launchpad.net/bugs/1326492

Title:
  BUG: Bad page map in process mozStorage #6  pte:24f2f965 pmd:124fc3067

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Hello!
  I have a HP EliteBook 850 G1 which frequently crashes - will attach crash report.
  The system is brandnew, factory installed was Windows 7 (still in place as alternate boot option, rarely used), i.e. no earlier Linux on it yet. Most interesting detail is that this happens ONLY when running on batteries, if connected to power, no problems whatsoever), using batteries however reproducible within <= 30min (it just happens).
  Affected actual process (mozStorage in this example) varies, ultimately the OS hangs.
  Used memtest86 - nothing found.

  If there is any further info needed, pls let me know!
  Thx!!
    tge

  PS: I used the GUI-based crash reporting function but have no clue where that data ended up and what to do next ... so possibly this already appears somewhere
  --- 
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  tge        2939 F.... pulseaudio
                        tge        9729 F.... pulseaudio
   /dev/snd/controlC1:  tge        2939 F.... pulseaudio
                        tge        9729 F.... pulseaudio
  CurrentDesktop: XFCE
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=30d0fef1-3c3e-462e-953e-5f6557133900
  InstallationDate: Installed on 2014-05-20 (15 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: Hewlett-Packard HP EliteBook 850 G1
  NonfreeKernelModules: wl
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-27-generic root=UUID=0f9bf6b7-e9be-42e9-a2aa-e66800536323 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.13.0-27.50-generic 3.13.11
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-27-generic N/A
   linux-backports-modules-3.13.0-27-generic  N/A
   linux-firmware                             1.127.2
  Tags:  trusty
  Uname: Linux 3.13.0-27-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 02/09/2014
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: L71 Ver. 01.07
  dmi.board.name: 198F
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: KBC Version 15.52
  dmi.chassis.asset.tag: CNU4109M6X
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvrL71Ver.01.07:bd02/09/2014:svnHewlett-Packard:pnHPEliteBook850G1:pvrA3009DD10303:rvnHewlett-Packard:rn198F:rvrKBCVersion15.52:cvnHewlett-Packard:ct10:cvr:
  dmi.product.name: HP EliteBook 850 G1
  dmi.product.version: A3009DD10303
  dmi.sys.vendor: Hewlett-Packard

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