kernel-packages team mailing list archive

[Dave Chiluk <1581236@xxxxxxxxxxxxxxxxxx>]

@Greg

Our Haswell servers aren't seeing this, but one of my desktops is.

By chance do you happen to have an nvidia card in that machine?  I've
been meaning to rip it out of my desktop and try again, but I haven't
found the time.

Also please run apport-collect and upload the logs to this case.

Thank you,

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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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