New test kernel could be found here http://people.canonical.com/~acelan/bugs/lp1779984/
0001-ata-ahci-Support-state-with-min-power-but-Partial-lo.patch 0002-ata-ahci-Enable-DEVSLP-by-default-on-x86-with-SLP_S0.patch 0003-ata-libahci-Correct-setting-of-DEVSLP-register.patch 0004-ata-libahci-Allow-reconfigure-of-DEVSLP-register.patch We'll check if those commits help the power consumption. -- 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-oem package in Ubuntu: Triaged Bug description: [Impact] Any of the platforms we’ve been seeing SATA problems not going to deepest state leading 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. [Test] Verified the power consumption on some new platforms, it doesn't do too much difference to the numbers, but it improves. [Fix] Suggested from Intel and Dell to contains the 2 commits https://patchwork.kernel.org/patch/10502285/ https://patchwork.kernel.org/patch/10502287/ [Regression Potential] Low, the production machines with suspend-to-idle enabled should have the DEVSLP function been validated. [Misc] Those commits do not show up in any public git tree yet, so let's verify them in oem kernel first, and then will submit to bionic kernel later. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1781533/+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
