May 13 04:14:41 Trouble systemd[1]: Starting Cryptography Setup for 
nvme0n1p3_crypt...
May 13 04:14:41 Trouble systemd-cryptsetup[618]: Volume nvme0n1p3_crypt already 
active.
May 13 04:14:41 Trouble systemd[1]: Started Cryptography Setup for 
nvme0n1p3_crypt.
May 13 04:14:41 Trouble systemd-fsck[682]: /dev/nvme0n1p2: clean, 321/124928 
files, 169069/499712 blocks
May 13 04:14:41 Trouble systemd-fsck[686]: /dev/nvme0n1p1: 16 files, 
5393/130812 clusters
May 13 04:14:41 Trouble systemd[1]: Found device /dev/mapper/nvme0n1p3_crypt.
May 13 04:14:41 Trouble kernel: [    1.320827] nvme 0000:04:00.0: Samsung/Dell 
NVMe quirk is being ignored -- please report your results
May 13 04:14:41 Trouble kernel: [    1.320866] nvme nvme0: pci function 
0000:04:00.0
May 13 04:14:41 Trouble kernel: [    1.430158] nvme nvme0: APST enabled: max PS 
= 4, max round-trip latency = 24000us, table = 
18130100000000001813010000000000181301000000000020f05500000000000000000000000000000000000000000000000000000000000000000000000000
May 13 04:14:41 Trouble kernel: [    1.448104]  nvme0n1: p1 p2 p3
May 13 04:14:41 Trouble kernel: [   12.893967] EXT4-fs (nvme0n1p2): mounting 
ext2 file system using the ext4 subsystem
May 13 04:14:41 Trouble kernel: [   12.900921] EXT4-fs (nvme0n1p2): mounted 
filesystem without journal. Opts: (null)

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https://bugs.launchpad.net/bugs/1678184

Title:
  APST quirk needed for Samsung 512GB NVMe drive

Status in linux package in Ubuntu:
  Confirmed
Status in linux source package in Yakkety:
  Fix Committed
Status in linux source package in Zesty:
  Fix Committed

Bug description:
  APST support just landed in the latest Zesty kernel (4.10.0-14.16) as
  part of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1664602.
  That patch has a quirk for certain 256GB Samsung drives found in Dell
  laptops that do not behave well when APST is enabled. I am
  experiencing the same symptoms with the same model laptop except with
  a 512GB Samsung. Prior to manually disabling APST the drive would die
  and system would go down in flames with I/O errors within 20 to 40
  minutes of boot.

  $ sudo nvme list
  Node             SN                   Model                                   
 Namespace Usage                      Format           FW Rev  
  ---------------- -------------------- 
---------------------------------------- --------- -------------------------- 
---------------- --------
  /dev/nvme0n1           ************** PM951 NVMe SAMSUNG 512GB                
 1         500.20  GB / 512.11  GB    512   B +  0 B   BXV76D0Q

  ProblemType: Bug
  DistroRelease: Ubuntu 17.04
  Package: linux-image-4.10.0-14-generic 4.10.0-14.16
  ProcVersionSignature: Ubuntu 4.10.0-14.16-generic 4.10.3
  Uname: Linux 4.10.0-14-generic x86_64
  ApportVersion: 2.20.4-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ajclayton   3305 F.... pulseaudio
  CurrentDesktop: Unity:Unity7
  Date: Fri Mar 31 09:42:38 2017
  InstallationDate: Installed on 2012-09-08 (1665 days ago)
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 
(20120425)
  MachineType: Dell Inc. XPS 15 9550
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.10.0-14-generic 
root=UUID=779e5929-5ffb-49b1-9786-1adcde824b7d ro rootflags=subvol=@ noprompt 
nouveau.modeset=0 log_buf_len=20M
  RelatedPackageVersions:
   linux-restricted-modules-4.10.0-14-generic N/A
   linux-backports-modules-4.10.0-14-generic  N/A
   linux-firmware                             1.164
  SourcePackage: linux
  UpgradeStatus: Upgraded to zesty on 2017-03-07 (23 days ago)
  dmi.bios.date: 04/07/2016
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 01.02.00
  dmi.board.name: 0N7TVV
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr01.02.00:bd04/07/2016:svnDellInc.:pnXPS159550:pvr:rvnDellInc.:rn0N7TVV:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: XPS 15 9550
  dmi.sys.vendor: Dell Inc.

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