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 -- 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/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/ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1581236/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
