Followup: My email to Samsung clearly and succinctly stated that there is a bug in their firmware, where it wrongly reports "I support NCQ TRIM!" but it really doesn't, and that they introduced the bug recently. I said nothing about Linux.
Their mentally retarded response: "Dear Customer, Thank you for contacting Samsung Support regarding your concerns and inquiries. We apologize for any inconvenience this may be causing you. Since Linux is open source, Samsung does not support the OS. All we can tell you is that you can disable Queued TRIM in Linux. Linux will then start using Sequential Trim, which is similar to how Windows does TRIM. Newer versions of Linux kernels blacklist the drive so that Queued TRIM automatically is disabled. Thank you again for contacting Samsung Support and have a good day. DM CS20204" In other words: "Our product is broken, so just tell the OS not to use the broken feature and hey presto you're a winner! Now stop bugging us with your Loonixes and stuff." Can we try to get press attention on this? Random corruption caused by regular TRIM operation is almost as serious as the 840 Evo's data retention issue. -- 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/1449005 Title: trim does not work with Samsung 840 EVO after firmware update (EXT0DB6Q) Status in fstrim package in Ubuntu: Invalid Status in linux package in Ubuntu: Confirmed Status in fstrim source package in Trusty: Invalid Status in linux source package in Trusty: Confirmed Status in fstrim source package in Utopic: Invalid Status in linux source package in Utopic: Confirmed Status in fstrim source package in Vivid: Invalid Status in linux source package in Vivid: Confirmed Bug description: Hi, after updating Samsung SSD 840 EVO to the latest firmware (EXT0DB6Q) the fstream command doesn't work anymore. Besides, there are a lot of file system errors and "bad sectors" reports. The problem is certainly caused by Samsung's firmware but I reported it as a bug because in Windows TRIM works normally after the upgrade. I have attached an image uploaded by a user who is experiencing the same problem. If you execute the command "sudo fstrim /" the console gets stuck. If you add that command in rc.local the boot is compromised. I really hope this problem could be solved. Thanks === break-fix: - 6fc4d97a4987c5d247655a157a9377996626221a break-fix: - 9a9324d3969678d44b330e1230ad2c8ae67acf81 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fstrim/+bug/1449005/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
