Public bug reported: Greetings,
This issue is fixed by booting with the following kernel argument: acpi_mask_gpe=0x06 The effects of this bug were pretty devastating on the system; very slow and the fans were spinning very hard. Cores 0 and 1 were running at nearly 100% on an otherwise idle system. It seems that this bug is well documented: https://bugzilla.kernel.org/show_bug.cgi?id=117481 (2016) https://bugzilla.redhat.com/show_bug.cgi?id=1192856 (2015) https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1577629 (2016) I am new, so I am unsure whether it would be within the scope of Ubuntu to make it an option during installation to include device-specific kernel quirks for bugs such as this, and I wanted to check and see what the go is. If we know it is affecting a certain set of Macbook Pro's then would it be possible to detect the system and then add the kernel argument? Best, Nick ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-40-generic 5.4.0-40.44 ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44 Uname: Linux 5.4.0-40-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.20.11-0ubuntu27.3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: nick 1865 F.... pulseaudio /dev/snd/controlC1: nick 1865 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Tue Jul 14 19:43:20 2020 InstallationDate: Installed on 2020-07-13 (0 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 006: ID 05ac:8289 Apple, Inc. Bus 001 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth) Bus 001 Device 003: ID 05ac:0262 Apple, Inc. Apple Internal Keyboard / Trackpad Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Apple Inc. MacBookPro11,2 ProcEnviron: LANGUAGE=en_AU:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_AU.UTF-8 SHELL=/bin/bash ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-40-generic root=UUID=e9ad07dc-6627-4a53-8cc5-b2f8967c933c ro quiet splash acpi_mask_gpe=0x06 vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.4.0-40-generic N/A linux-backports-modules-5.4.0-40-generic N/A linux-firmware 1.187.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/17/2018 dmi.bios.vendor: Apple Inc. dmi.bios.version: 149.0.0.0.0 dmi.board.asset.tag: Base Board Asset Tag# dmi.board.name: Mac-3CBD00234E554E41 dmi.board.vendor: Apple Inc. dmi.board.version: MacBookPro11,2 dmi.chassis.type: 10 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-3CBD00234E554E41 dmi.modalias: dmi:bvnAppleInc.:bvr149.0.0.0.0:bd09/17/2018:svnAppleInc.:pnMacBookPro11,2:pvr1.0:rvnAppleInc.:rnMac-3CBD00234E554E41:rvrMacBookPro11,2:cvnAppleInc.:ct10:cvrMac-3CBD00234E554E41: dmi.product.family: Mac dmi.product.name: MacBookPro11,2 dmi.product.sku: System SKU# dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug focal wayland-session -- 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/1887505 Title: GPE interrupt on Macbook Pro - kworker with high CPU usage Status in linux package in Ubuntu: New Bug description: Greetings, This issue is fixed by booting with the following kernel argument: acpi_mask_gpe=0x06 The effects of this bug were pretty devastating on the system; very slow and the fans were spinning very hard. Cores 0 and 1 were running at nearly 100% on an otherwise idle system. It seems that this bug is well documented: https://bugzilla.kernel.org/show_bug.cgi?id=117481 (2016) https://bugzilla.redhat.com/show_bug.cgi?id=1192856 (2015) https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1577629 (2016) I am new, so I am unsure whether it would be within the scope of Ubuntu to make it an option during installation to include device- specific kernel quirks for bugs such as this, and I wanted to check and see what the go is. If we know it is affecting a certain set of Macbook Pro's then would it be possible to detect the system and then add the kernel argument? Best, Nick ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-40-generic 5.4.0-40.44 ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44 Uname: Linux 5.4.0-40-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.20.11-0ubuntu27.3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: nick 1865 F.... pulseaudio /dev/snd/controlC1: nick 1865 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Tue Jul 14 19:43:20 2020 InstallationDate: Installed on 2020-07-13 (0 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 006: ID 05ac:8289 Apple, Inc. Bus 001 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth) Bus 001 Device 003: ID 05ac:0262 Apple, Inc. Apple Internal Keyboard / Trackpad Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Apple Inc. MacBookPro11,2 ProcEnviron: LANGUAGE=en_AU:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_AU.UTF-8 SHELL=/bin/bash ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-40-generic root=UUID=e9ad07dc-6627-4a53-8cc5-b2f8967c933c ro quiet splash acpi_mask_gpe=0x06 vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.4.0-40-generic N/A linux-backports-modules-5.4.0-40-generic N/A linux-firmware 1.187.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/17/2018 dmi.bios.vendor: Apple Inc. dmi.bios.version: 149.0.0.0.0 dmi.board.asset.tag: Base Board Asset Tag# dmi.board.name: Mac-3CBD00234E554E41 dmi.board.vendor: Apple Inc. dmi.board.version: MacBookPro11,2 dmi.chassis.type: 10 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-3CBD00234E554E41 dmi.modalias: dmi:bvnAppleInc.:bvr149.0.0.0.0:bd09/17/2018:svnAppleInc.:pnMacBookPro11,2:pvr1.0:rvnAppleInc.:rnMac-3CBD00234E554E41:rvrMacBookPro11,2:cvnAppleInc.:ct10:cvrMac-3CBD00234E554E41: dmi.product.family: Mac dmi.product.name: MacBookPro11,2 dmi.product.sku: System SKU# dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. 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