@gimpsmart your e-mail is well written, but I don't believe it applies to the EXT0DB6Q for the 840 EVO.
We no longer receive the "failed to get NCQ Send/Recv Log Emask 0x1" errors with this level of firmware which implies that the log has been correctly implemented. Samsung may simply need to re-spin the firmware for your 850 Pro drive with the fix. That being said, running a large fstrim on a EXT0DB6Q drive did still show timeout similar to below " [164782.716079] ata2.00: failed command: WRITE FPDMA QUEUED [164782.716081] ata2.00: cmd 61/60:10:28:b6:c0/00:00:1e:00:00/40 tag 2 ncq 49152 out [164782.716081] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) " It is because of these timeout errors that we decided to pull the upstream commit to disable NCQ trim on samsung SSDs. Are there any users of the EXT0DB6Q firmware that are still get the "failed to get NCQ Send/Recv Log Emask 0x1" errors? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1338706 Title: Samsung SSD 840 failed to get NCQ Send/Recv Log Emask 0x1 failed to set xfermode (err_mask=0x40) on upstream kernels >= 3.12 Status in linux package in Ubuntu: Invalid Status in linux source package in Trusty: Fix Committed Status in linux source package in Utopic: Fix Committed Status in linux source package in Vivid: Fix Committed Status in linux source package in Wily: Invalid Bug description: [Impact] * Users with Samsung 8** SSD drives see miscellaneous errors and warning messages in the logs depending on the firmware level of the drive while booting or after running trim. [Test Case] * Run this script, and then check logs for errors. #!/bin/bash git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git for i in {0..10} ; do cp -r linux linux$i done rm -rf linux* echo "sudo fstrim requires your password" sudo fstrim ./ [Regression Potential] * There is very little regression potential as this change simply prevents NCQ trim from being used on Samsung 8** drives. [Other Info] * Commit is upstream. * Greatly increasing the timeout for the drives seems to relieve the timeout errors. This may be due to trimming large numbers of sectors with single commands. It may be prudent for future upstream to break up large trims into multiple requests on smaller regions. ===============Original Bug description ================================== Samsung SSD 840 Series failed to get NCQ Send/Recv Log Emask 0x1. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-30-generic 3.13.0-30.55 ProcVersionSignature: Ubuntu 3.13.0-30.55-generic 3.13.11.2 Uname: Linux 3.13.0-30-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: user 2131 F.... pulseaudio CurrentDesktop: Unity Date: Mon Jul 7 20:01:28 2014 HibernationDevice: RESUME=UUID=685afcb7-7aa6-4048-af15-091d3bcd3b35 InstallationDate: Installed on 2014-06-22 (14 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) IwConfig: eth0 no wireless extensions. lo no wireless extensions. MachineType: System manufacturer System Product Name ProcFB: 0 nouveaufb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-30-generic root=UUID=d7c2e1cb-d046-460c-83b8-0cfbb330d095 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-30-generic N/A linux-backports-modules-3.13.0-30-generic N/A linux-firmware 1.127.4 RfKill: SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/10/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0901 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: M3N78-EM dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0901:bd09/10/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM3N78-EM:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1338706/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
