kernel-packages team mailing list archive

[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

Did this issue start happening after an update/upgrade?  Was there a
prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.6 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as
"Confirmed".


Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc7-wily/


** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1581236

Title:
  Power state does not drop lower than pc03 for package (Haswell
  i7-4500U)

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  So similarly to bug
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1579917, I am
  also not able to get into pc10, as described there.

  I am using a sata drive, and after setting min_power to
  /sys/class/scsi_host/*/link_power_management_policy still does not get
  me into any states lower than pc03.

  Following these links -- without testing the patched kernel (Setting min_power gets me to pc03, but not any further)
  https://mjg59.dreamwidth.org/42156.html
  https://mjg59.dreamwidth.org/41713.html 

  
  Attaching the powertop screencap:
  http://pastebin.ubuntu.com/16382692/

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