** Also affects: linux (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Cosmic)
   Importance: Undecided
       Status: New

** Also affects: linux-oem (Ubuntu Cosmic)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Also affects: linux-oem (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Bionic)
       Status: New => In Progress

** Changed in: linux (Ubuntu Cosmic)
       Status: New => Fix Committed

** Changed in: linux-oem (Ubuntu Bionic)
       Status: New => Fix Committed

** Changed in: linux-oem (Ubuntu Cosmic)
       Status: New => Invalid

** Changed in: linux (Ubuntu Cosmic)
       Status: Fix Committed => In Progress

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem in Ubuntu.
https://bugs.launchpad.net/bugs/1781533

Title:
  SATA device is not going to DEVSLP

Status in HWE Next:
  Triaged
Status in OEM Priority Project:
  Triaged
Status in linux package in Ubuntu:
  New
Status in linux-oem package in Ubuntu:
  Fix Committed
Status in linux source package in Bionic:
  In Progress
Status in linux-oem source package in Bionic:
  Fix Committed
Status in linux source package in Cosmic:
  In Progress
Status in linux-oem source package in Cosmic:
  Invalid

Bug description:
  [Impact]
  Any of the platforms we’ve been seeing SATA problems not going to deepest 
state leads to other devices not getting there during long idle or s2idle. And 
it also prevents the system from entering deeper PC state other than PC3.

  [Fix]
  Suggested from Intel and Dell to contains the following 4 commits,
  and all of 4 commits are in v4.19-rc1
  https://patchwork.kernel.org/patch/10502285/
  https://patchwork.kernel.org/patch/10502287/
  https://patchwork.kernel.org/patch/10535781/
  https://patchwork.kernel.org/patch/10535783/

  [Test]
  Verified the power consumption on some new platforms, it improves the SATA 
HDD power consumption around 0.5w during long idle.

  [Regression Potential]
  Low, the DEVSLP function is already validated when shipped with SLP_S0
  support.

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