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[Carolin Latze <carolin.latze@xxxxxxxxx>]

Booting is more reliable now. I did not see a freeze during boot yet.
(kernel runs for 4 days now). However I still see freezes while running

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https://bugs.launchpad.net/bugs/1516215

Title:
   kernel 4.x has issues with lite-on sata controller in dell xps 13
  (2015)

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I have a Dell XPS 13 (2015) which has a Lite-On Sata controller:
  03:00.0 SATA controller: Lite-On Technology Corporation Device 0224 (rev 10)

  Right from the beginning, I have issues with that one under Linux (not
  Windows). It might happen that the notebook just dies (loosing its
  SSD), or it might not even boot. Whenever it does not boot, it usually
  stops with a message around "job 1 of 12 ..." (I don't find them in
  any logs ). Sometimes when I boot into Windows and then immediately
  reboot into Linux it works. It usually helps to boot a 3.19.x kernel,
  although even that one can have the same issues (although way less
  than 4.x).

  The system almost always crashes completely when I run the dump tool.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-18-generic 4.2.0-18.22
  ProcVersionSignature: Ubuntu 4.2.0-18.22-generic 4.2.3
  Uname: Linux 4.2.0-18-generic x86_64
  ApportVersion: 2.19.1-0ubuntu4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  latze      1599 F.... pulseaudio
  CurrentDesktop: XFCE
  Date: Sat Nov 14 09:29:04 2015
  HibernationDevice: RESUME=UUID=b8662265-a1f0-487e-9d85-2731c765b3eb
  InstallationDate: Installed on 2015-08-23 (82 days ago)
  InstallationMedia: Xubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422.1)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 004: ID 0bda:5682 Realtek Semiconductor Corp.
   Bus 001 Device 003: ID 04f3:20d0 Elan Microelectronics Corp.
   Bus 001 Device 002: ID 8087:0a2a Intel Corp.
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Dell Inc. XPS 13 9343
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-18-generic.efi.signed root=UUID=9e67912b-c59e-47ac-b2f1-3ef39e3d38fb ro debug
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-18-generic N/A
   linux-backports-modules-4.2.0-18-generic  N/A
   linux-firmware                            1.149.1
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: Upgraded to wily on 2015-10-31 (13 days ago)
  dmi.bios.date: 07/14/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A05
  dmi.board.name: 0310JH
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA05:bd07/14/2015:svnDellInc.:pnXPS139343:pvr:rvnDellInc.:rn0310JH:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: XPS 13 9343
  dmi.sys.vendor: Dell Inc.

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