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[Mateusz Gryzzli <1269777@xxxxxxxxxxxxxxxxxx>]

This is a regression from kernel 3.12 and 3.13 onwards (i can't
reproduce the 'failed to get NCQ Send/Recv Log Emask 0x1' in kernel
3.11 on samsung 840 ssd). I think those ncq changes upstream make some
spotty ssd's firmware's go nuts, like samsung (which for example has ncq
disabled for their macbook pcie-express ssd's). For the time being as a
workaround you can either disable power saving on sata link, downgrade
the kernel or disable ncq altogether. This has nothing to do with bios
manufacturer afaik, because even disabling acpi or other aspm features
still produces those errors. Maybe this has to be reopened, because that
bug can cause data-loss in laptops (and pc's) and seems not to be vendor
specific (i have an asus mobo for example).

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https://bugs.launchpad.net/bugs/1269777

Title:
  [ Ubuntu 14.04 - Lenovo W510 - SSD Samsung 840 PRO 512GB] Sudden Read-
  Only Filesystem

Status in “linux” package in Ubuntu:
  Invalid

Bug description:
  ++++++++++++++++++++++++++++++++++++++++++++++++++++
  [UPDATE 05th March 2014]

  The lenovo service was here and changed the mainboard.
  No problems any more with a Crucial M500 480 GB and therefore
  I think witch any other SSD on the W510.

  So the problem turned out a real hardware problem.
  The lenovo diagnostic cd however did not turn out any problem.
  So to make a long story short: If you encounter any problems like in 
  this thread, don't heasitate to contact the lenovo service and insist for
  a repair. In my case, I had to contact the service twice because I am using
  hardware that is not part of the supported lenovo device list.

  ++++++++++++++++++++++++++++++++++++++++++++++++++++


  Like mentioned in bug #1266305 (and before in bug #1265309) the
  following problem occured:

  1. System
  --------------------------

  - Ubuntu 14 04 LTS (acutal development branch)
  - linux-image-generic v. 3.13.x,  mainline kernel 3.13.x (first testing the standard kernel), last 3.12 mainline kernel
  - lvm with trim support (batched discard)
  - tlp (currently disabled for testing purpose)

  2. Hardware:
  ---------------------------
  - Lenovo W510 i7 quad core
  - SSD Samsung 840 Pro (former Samsung 840 EVO, was changed in hope that the problem disapears)
  - nvidia graphics

  BIOS (defaults F9) and:

  - BIOS Mode Standard 1: SATA: AHCI, POWER: pci and pcie power management AUTOMATIC
  - BIOS Mode Standard 2: SATA: AHCI, POWER: pci and pcie power management OFF

  - BIOS Mode Compat 1: SATA: Compatability Mode, POWER: pci and pcie power management AUTOMATIC
  - BIOS Mode Compat 2: SATA: Compatability Mode, POWER: pci and pcie power management OFF

  3. Problem descripton
  -----------------------------------------------

  The SSD randomly freezes with the following errors:
  ata1: EH complete
  ata1: limiting SATA link speed to 1.5 Gbps
  ata1.00: exception Emask 0x52 SAct 0x1 SErr 0x1a80d00 action 0x6 frozen
  ata1.00: irq_stat 0x08000000, interface fatal error
  ata1: SError: { UnrecovData Proto HostInt 10B8B BadCRC LinkSeq TrStaTrns }
  ata1.00: failed command: READ FPDMA QUEUED
  ata1.00: cmd 60/08:00:d8:b9:27/00:00:05:00:00/40 tag 0 ncq 4096 in
  ata1.00: status: { DRDY }
  ata1: hard resetting link
  ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310)

  Probably affect other Thinkpad models too:

  - http://www.sevenforums.com/bsod-help-support/309288-bsod-after-few-minutes-5-55-minutes-samsung-ssd-840-evo.html
  - [GERMAN] http://thinkpad-forum.de/threads/168841-Freezes-nach-Einbau-einer-neuen-SSD?p=1698795#post1698795
  - http://www.howtoeverything.net/linux/hardware/ubuntu-freeze-issue-after-ssd-upgrade

  4. Troubleshooting so far
  ------------------------------------------------
  4.1. Kernel boot parameters:

  libata.force=1:3.0G,2:1,5G libata.force=noncq

  -> not working. DRDY, hard restting link.

  4.2. BIOS Mode Compat 2 (Compat, PCI powermangement OFF), no
  additional kernel boot parameters.

  System ran with standard generic kernel 3.13.x for over 12 hours usage without any problems.
  I did some suspend/ resume cycles: no problems.

  5. Further testing:
  --------------------------------------------------------
  Testing scenarios will be applied in the follwowing structure (if necessary)

  5.1 Testing the standard trusty kernel (linux-image-generic)
  5.1.1.  with all BIOS modes.
  5.1.2.  eventually kernel boot parameters

  5.2. Testing the latest mainline kernel  with all BIOS modes.
  5.2.1.  with all BIOS modes.
  5.2.2.  eventually kernel boot parameters

  This could take a few days, so be patient.

  Keeping fingers crossed ;-)

  P.S-.: Thanks a lot for Christopher M. Penalver for his excellent
  assistance so far!

  ######################################################################

  Wed, 15 Jan 2014 18:00:00 +0100

  - installed mainline kernel 3.13.0-031300rc8-generic
  - BIOS:
        SATA: Compatibility,
        POWER: pci / pcie power management OFF (!)
  - no tlp

  No problems until the next day (switched POWER management for pci and
  pcie on)

  ######################################################################

  Thu, 16 Jan 2014 13:18:45 +0100

  - installed linux-image-generic -> 3.13.0-3-generic
  - BIOS:
        SATA: AHCI,
        POWER:  pci/pcie power management AUTOMATIC
  - Reboot with new standard kernel
  - no tlp yet!

  ######################################################################

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-generic 3.13.0.3.6
  ProcVersionSignature: Ubuntu 3.13.0-3.18-generic 3.13.0-rc8
  Uname: Linux 3.13.0-3-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.13.1-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  apos       3069 F.... pulseaudio
   /dev/snd/controlC0:  apos       3069 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Thu Jan 16 12:35:13 2014
  HibernationDevice: RESUME=UUID=7290992b-11df-4d5c-a9bc-579dafe5eb61
  InstallationDate: Installed on 2014-01-08 (7 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140105)
  MachineType: LENOVO 4391E46
  ProcFB:

  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-3-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-3-generic N/A
   linux-backports-modules-3.13.0-3-generic  N/A
   linux-firmware                            1.121
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/03/2012
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 6NET84WW (1.45 )
  dmi.board.name: 4391E46
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr6NET84WW(1.45):bd10/03/2012:svnLENOVO:pn4391E46:pvrThinkPadW510:rvnLENOVO:rn4391E46:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 4391E46
  dmi.product.version: ThinkPad W510
  dmi.sys.vendor: LENOVO

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