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- xenial' to 'verification-done-xenial'. If the problem still exists, change the tag 'verification-needed-xenial' to 'verification-failed- xenial'.
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 https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-xenial -- 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/1757422 Title: Fix Runtime PM for r8169 Status in HWE Next: New Status in linux package in Ubuntu: Triaged Status in linux-oem package in Ubuntu: New Status in linux source package in Xenial: Invalid Status in linux-oem source package in Xenial: Fix Committed Status in linux source package in Artful: Triaged Status in linux source package in Bionic: Triaged Status in linux-oem source package in Bionic: New Bug description: ===SRU Justification=== [Impact] r8169 stays in D0 even when no ethernet cable is plugged in. This drains lots of power (~3W). The tested laptop uses 5.5W when r8169 is in D0, 1.8W when r8169 is in D3. The power saved is substantial. [Fix] Improved rumtime PM logic to let the device gets suspended (D3) when the port is not in used and the link is down. [Test Case] The chip version is 8168h/8111h. Test when no ethernet gets plugged. Powertop shows power consumption is roughly 5.5W. lspci shows the device is in D0. With the patch, The power consumption is reduced to 1.8W. lspci shows the device is in D3, PME# is correctly enabled. Plug ethernet cable can corretly wake up the device. Unplug the cable, the device gets suspended to D3 correctly. [Regression Potential] Medium. - r8169 is so ubiquitous, with lots of different chip versions. It's hard to test all of them. - PCI D3 needs system firmware (ACPI) support, this might hit some plaform bugs. - the code is still in v4.16-rc*, so it's not well tested by end users. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1757422/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : firstname.lastname@example.org Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp