** Description changed:

- ahci-xgene doesn't support NCQ but it sets this flag. This causes SATA
- failures that surface as a filesystem being remounted read-only due to
- errors when using a disk that supports NCQ.
+ [IMPACT]
+ ahci-xgene doesn't support NCQ but it sets this flag. This causes SATA 
failures that surface as a filesystem being remounted read-only due to errors 
when using a disk that supports NCQ.
+ [TEST CASE]
+ Do a network boot install on an X-Gene system with an SSD drive that supports 
NCQ. The install will fail and dmesg will show the filesystem being remounted 
read-only.
+ [Regression Potential]
+ Minimal; we're turning off a feature that is known broken.

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https://bugs.launchpad.net/bugs/1358498

Title:
  ahci-xgene falsely advertises NCQ support

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  [IMPACT]
  ahci-xgene doesn't support NCQ but it sets this flag. This causes SATA 
failures that surface as a filesystem being remounted read-only due to errors 
when using a disk that supports NCQ.
  [TEST CASE]
  Do a network boot install on an X-Gene system with an SSD drive that supports 
NCQ. The install will fail and dmesg will show the filesystem being remounted 
read-only.
  [Regression Potential]
  Minimal; we're turning off a feature that is known broken.

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