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[Jan Stutzki <launchpad@xxxxxxxxxxx>]

Unfortunately the identical problem persists with all the kernels I tried recently:
4.2.0-27-generic
4.4.0-16-generic
4.4.0-17-generic
4.4.0-21-generic
4.5.2-040502-generic
4.6.0-999-generic #201604262201 SMP Wed Apr 27 02:03:00 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux (from the ppa "daily")

When booted from USB stick the system suspends and wakes up but is
unable to access any filesystems as the stick has moved from /dev/sda to
/dev/sdb. The nvme0n1 device is available before standby an is missing
after. Same goes for all devices on a PCI bus other than 01:

These devices go missing after suspend/standby:
02:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller (rev 01)
03:00.0 Ethernet controller: Qualcomm Atheros Killer E2400 Gigabit Ethernet Controller (rev 10)
04:00.0 Network controller: Intel Corporation Wireless 8260 (rev 3a)

My current guess is an issue with the UEFI/BIOS.

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https://bugs.launchpad.net/bugs/1568703

Title:
  [Alienware Alienware 13 R2] hibernate/resume failure [non-free:
  nvidia_uvm nvidia_modeset nvidia]

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  As standby is not working I tried it with hibernate. Unfortunately the
  same error occurs (EXT4-fs error) after the message that nvme0n1 is
  not available.

  ProblemType: KernelOops
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-18-generic 4.4.0-18.34
  ProcVersionSignature: Ubuntu 4.4.0-18.34-generic 4.4.6
  Uname: Linux 4.4.0-18-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
  Annotation: This occurred during a previous hibernation, and prevented the system from resuming properly.
  ApportVersion: 2.20.1-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  lightdm    1306 F.... pulseaudio
                        stutzki    2131 F.... pulseaudio
  Date: Mon Apr 11 08:34:00 2016
  DuplicateSignature: hibernate/resume:Alienware Alienware 13 R2:1.2.12
  ExecutablePath: /usr/share/apport/apportcheckresume
  Failure: hibernate/resume
  HibernationDevice: RESUME=UUID=45b1ef11-e9d4-4daf-9cb1-f253e996f6b4
  InstallationDate: Installed on 2016-04-01 (9 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160401)
  InterpreterPath: /usr/bin/python3.5
  MachineType: Alienware Alienware 13 R2
  ProcCmdline: /usr/bin/python3 /usr/share/apport/apportcheckresume
  ProcEnviron:
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-18-generic.efi.signed root=UUID=9bc7e2b8-0f93-4332-b217-19fdb84e9e0d ro
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-18-generic N/A
   linux-backports-modules-4.4.0-18-generic  N/A
   linux-firmware                            1.157
  SourcePackage: linux
  Title: [Alienware Alienware 13 R2] hibernate/resume failure [non-free: nvidia_uvm nvidia_modeset nvidia]
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  dmi.bios.date: 03/22/2016
  dmi.bios.vendor: Alienware
  dmi.bios.version: 1.2.12
  dmi.board.name: Alienware 13 R2
  dmi.board.vendor: Alienware
  dmi.board.version: A00
  dmi.chassis.type: 10
  dmi.chassis.vendor: Alienware
  dmi.chassis.version: Not Specified
  dmi.modalias: dmi:bvnAlienware:bvr1.2.12:bd03/22/2016:svnAlienware:pnAlienware13R2:pvr1.2.12:rvnAlienware:rnAlienware13R2:rvrA00:cvnAlienware:ct10:cvrNotSpecified:
  dmi.product.name: Alienware 13 R2
  dmi.product.version: 1.2.12
  dmi.sys.vendor: Alienware

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