kernel-packages team mailing list archive

[dann frazier <dann.frazier@xxxxxxxxxxxxx>]

ubuntu@am3:~$ dmesg | grep -i ncq
[    1.309746] xgene-ahci 1a800000.sata: controller can't do NCQ, turning off CAP_NCQ
[    1.725691] ata3.00: 976773168 sectors, multi 0: LBA48 NCQ (depth 0/32)
ubuntu@am3:~$ 

** Tags removed: verification-needed-trusty
** Tags added: verification-done-trusty

-- 
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/1358498

Title:
  ahci-xgene falsely advertises NCQ support

Status in “linux” package in Ubuntu:
  In Progress
Status in “linux” source package in Trusty:
  Fix Committed
Status in “linux” source package in Utopic:
  In Progress

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.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1358498/+subscriptions