> On 22 Jan 2018, at 9:34 AM, Lucas Zanella <email address hidden> wrote:
> 
> I'm having this on my Razer Blade Stealth, 512gb samsung SSD, ubuntu
> 17.10.1, but also had the issue on 17.04 and today at 16.04 after
> updating (possibly related; or not). I installed 17.10.1 today and
> immediately updated and the error ocurred. I then reinstalled without
> updating and I've seen no problems until now.
> 
> Could somebody help me? Is this issue fixed for 17.10.1? What should I
> do?

Please file a new bug. This issue is quite specific to different NVMe & motherboard combination.

You can try kernel parameter “nvme_core.default_ps_max_latency_us=1500” to disable PS4.

> 
> sudo nvme list
> Node             SN                   Model                                    Namespace Usage                      Format           FW Rev  
> ---------------- -------------------- ---------------------------------------- --------- -------------------------- ---------------- --------
> /dev/nvme0n1     S33UNX0J324060       SAMSUNG MZVLW512HMJP-00000               1          25,30  GB / 512,11  GB    512   B +  0 B   CXY7501Q
> 
> 
> NVME Identify Controller:
> vid     : 0x144d
> ssvid   : 0x144d
> sn      : S33UNX0J324060      
> mn      : SAMSUNG MZVLW512HMJP-00000              
> fr      : CXY7501Q
> rab     : 2
> ieee    : 002538
> cmic    : 0
> mdts    : 0
> cntlid  : 2
> ver     : 10200
> rtd3r   : 186a0
> rtd3e   : 4c4b40
> oaes    : 0
> oacs    : 0x17
> acl     : 7
> aerl    : 3
> frmw    : 0x16
> lpa     : 0x3
> elpe    : 63
> npss    : 4
> avscc   : 0x1
> apsta   : 0x1
> wctemp  : 341
> cctemp  : 344
> mtfa    : 0
> hmpre   : 0
> hmmin   : 0
> tnvmcap : 512110190592
> unvmcap : 0
> rpmbs   : 0
> sqes    : 0x66
> cqes    : 0x44
> nn      : 1
> oncs    : 0x1f
> fuses   : 0
> fna     : 0
> vwc     : 0x1
> awun    : 255
> awupf   : 0
> nvscc   : 1
> acwu    : 0
> sgls    : 0
> subnqn  : 
> ps    0 : mp:7.60W operational enlat:0 exlat:0 rrt:0 rrl:0
>          rwt:0 rwl:0 idle_power:- active_power:-
> ps    1 : mp:6.00W operational enlat:0 exlat:0 rrt:1 rrl:1
>          rwt:1 rwl:1 idle_power:- active_power:-
> ps    2 : mp:5.10W operational enlat:0 exlat:0 rrt:2 rrl:2
>          rwt:2 rwl:2 idle_power:- active_power:-
> ps    3 : mp:0.0400W non-operational enlat:210 exlat:1500 rrt:3 rrl:3
>          rwt:3 rwl:3 idle_power:- active_power:-
> ps    4 : mp:0.0050W non-operational enlat:2200 exlat:6000 rrt:4 rrl:4
>          rwt:4 rwl:4 idle_power:- active_power:-
> 
> -- 
> You received this bug notification because you are subscribed to linux
> in Ubuntu.
> https://bugs.launchpad.net/bugs/1678184
> 
> Title:
>  APST quirk needed for Samsung 512GB NVMe drive
> 
> Status in linux package in Ubuntu:
>  Fix Released
> Status in linux source package in Yakkety:
>  Fix Released
> Status in linux source package in Zesty:
>  Fix Released
> 
> 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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