Hi Colin Ian King, I tested the revert kernels from here https://kernel.ubuntu.com/~cking/lp-1853044/.
The results from Powertop can be found here https://postimg.cc/gallery/TTmWSfX. I also included the latest 5.3.0-61 kernel for reference. The test system is an XPS 9550 with HD Graphics 530, Intel Core i7 6700HQ For all kernels I booted up, ran powertop, waited to idle and made screenshots. Hope this helps. -- 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/1853044 Title: 5.3.0-23-generic causes fans to spin when idle Status in linux package in Ubuntu: Fix Released Status in linux source package in Eoan: Fix Released Status in linux source package in Focal: Fix Released Bug description: SRU Justification Impact: "drm/i915/gen8+: Add RC6 CTX corruption WA" makes it effectively impossible to enter RC6 for some Intel GPUs when a display server is running. This results in increased energy usage and temperature. Fix: Upstream has changed too much to make the fixes there applicable, but Chris Wilson has provided a patch for 5.3, here: https://gitlab.freedesktop.org/drm/intel/issues/614#note_366057 Test Case: See test results below. On an affected machine powertop will show increased RC6 usage on an idle desktop after the patch, and other symptoms of excessive power use should also subside. Regression Potential: The 5.3 patch is pretty straightforward, and only adds running of an existing delayed worker to retire GPU requests. No regressions have been reported in testing so far. --- After upgrading to 5.3.0-23-generic the fans in my machine don't stop running. They always sound like something is utilizing CPU - even with no applications running after boot. If I boot back to 5.3.0-19-generic it's fine. My microcode version is reported as 0xd4 and iucode-tool reports: iucode-tool: system has processor(s) with signature 0x000506e3 Let me know if you need anything else. ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: linux-image-5.3.0-23-generic 5.3.0-23.25 ProcVersionSignature: Ubuntu 5.3.0-23.25-generic 5.3.7 Uname: Linux 5.3.0-23-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu8.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: dean 2898 F.... pulseaudio /dev/snd/pcmC2D0p: dean 2898 F...m pulseaudio /dev/snd/controlC0: dean 2898 F.... pulseaudio /dev/snd/controlC1: dean 2898 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Mon Nov 18 13:03:34 2019 HibernationDevice: RESUME=UUID=55a42c82-50bf-4e75-a133-dbd3aa93611b InstallationDate: Installed on 2018-07-24 (482 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180724) ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.3.0-23-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.3.0-23-generic N/A linux-backports-modules-5.3.0-23-generic N/A linux-firmware 1.183.2 SourcePackage: linux UpgradeStatus: Upgraded to eoan on 2019-07-19 (121 days ago) dmi.bios.date: 05/16/2018 dmi.bios.vendor: Intel Corp. dmi.bios.version: KYSKLi70.86A.0055.2018.0516.1629 dmi.board.name: NUC6i7KYB dmi.board.vendor: Intel Corporation dmi.board.version: H90766-406 dmi.chassis.type: 3 dmi.chassis.vendor: Intel Corporation dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnIntelCorp.:bvrKYSKLi70.86A.0055.2018.0516.1629:bd05/16/2018:svn:pn:pvr:rvnIntelCorporation:rnNUC6i7KYB:rvrH90766-406:cvnIntelCorporation:ct3:cvr1.0: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1853044/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : email@example.com Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp