kernel-packages team mailing list archive

[Dave Chiluk <1449005@xxxxxxxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1338706 ***
    https://bugs.launchpad.net/bugs/1338706

@arkibott

The patch does this.
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4228,6 +4228,7 @@ static const struct ata_blacklist_entry ata_device_blacklist []
        { "Crucial_CT???M500SSD*",      NULL,   ATA_HORKAGE_NO_NCQ_TRIM, },
        { "Micron_M550*",               NULL,   ATA_HORKAGE_NO_NCQ_TRIM, },
        { "Crucial_CT*M550SSD*",        NULL,   ATA_HORKAGE_NO_NCQ_TRIM, },
+       { "Samsung SSD 8*",             NULL,   ATA_HORKAGE_NO_NCQ_TRIM, },

So barring any unexpected drive strings it should apply to all Samsung
8** SSD's.

The fix is not to disable trim or ncq completely, but only disables NCQ
trim.

The kernel looks "old" because kernels go through regression testing
before being pushed to end-users.   The date you see is the build date.

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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:
  Fix Released
Status in fstrim source package in Trusty:
  Invalid
Status in linux source package in Trusty:
  Fix Released
Status in fstrim source package in Utopic:
  Invalid
Status in linux source package in Utopic:
  Fix Released
Status in fstrim source package in Vivid:
  Invalid
Status in linux source package in Vivid:
  Fix Released

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

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