This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
bionic' to 'verification-done-bionic'. If the problem still exists,
change the tag 'verification-needed-bionic' to 'verification-failed-

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See for documentation how
to enable and use -proposed. Thank you!

** Tags added: verification-needed-bionic

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  SATA device is not going to DEVSLP

Status in HWE Next:
Status in OEM Priority Project:
Status in linux-oem package in Ubuntu:
  Fix Committed

Bug description:
  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.

  Suggested from Intel and Dell to contains the following 4 commits,
  and all of 4 commits are in v4.19-rc1

  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

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