also, sleep & resume seems to allow me to re-enable gpe16 without seeing the cpu utilization
-- 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/1321824 Title: gpe16 interrupt using > 90% cpu in gmux_index_wait_ready.isra Status in “linux” package in Ubuntu: Confirmed Bug description: on a retina macbook pro (MacBookPro11,3), I recently* noticed >90% of cpu being used in kworker thread, similar to http://askubuntu.com/questions/444005/what-is-causing-ubuntu-on- macbook-pro-to-have-high-cpu-usage disabling the gpe16 interrupt restores cpu idleness, and the stack trace shows: # cat /proc/4/stack [<ffffffffa00f0077>] gmux_index_wait_ready.isra.7+0x47/0x70 [apple_gmux] [<ffffffffa00f0159>] gmux_index_write8+0x39/0x60 [apple_gmux] [<ffffffffa00f0e05>] gmux_notify_handler+0xd5/0x119 [apple_gmux] [<ffffffff813fba01>] acpi_ev_notify_dispatch+0x44/0x5c [<ffffffff813e86f8>] acpi_os_execute_deferred+0x14/0x20 [<ffffffff810838a2>] process_one_work+0x182/0x450 [<ffffffff81084641>] worker_thread+0x121/0x410 [<ffffffff8108b312>] kthread+0xd2/0xf0 [<ffffffff8172a2fc>] ret_from_fork+0x7c/0xb0 [<ffffffffffffffff>] 0xffffffffffffffff *"recently" being yesterday, when I started plugging in an external monitor via mindisplayport/thunderbolt port, and also started using the 3.13.0-27-generic kernel image ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-27-generic 3.13.0-27.50 ProcVersionSignature: Ubuntu 3.13.0-27.50-generic 3.13.11 Uname: Linux 3.13.0-27-generic x86_64 NonfreeKernelModules: nvidia wl ApportVersion: 2.14.1-0ubuntu3.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: jbarnett 2982 F.... pulseaudio /dev/snd/controlC0: jbarnett 2982 F.... pulseaudio /dev/snd/controlC1: jbarnett 2982 F.... pulseaudio CurrentDesktop: GNOME Date: Wed May 21 09:25:40 2014 HibernationDevice: RESUME=UUID=948280a0-a059-468d-8484-f0d317f46e6d InstallationDate: Installed on 2014-02-24 (85 days ago) InstallationMedia: Ubuntu-GNOME 14.04 "Trusty Tahr" - Alpha amd64 (20140218) MachineType: Apple Inc. MacBookPro11,3 ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-27-generic.efi.signed root=UUID=135fd833-3282-4f3b-8802-0a27ec2765b9 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-27-generic N/A linux-backports-modules-3.13.0-27-generic N/A linux-firmware 1.127.2 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/18/2013 dmi.bios.vendor: Apple Inc. dmi.bios.version: MBP112.88Z.0138.B02.1310181745 dmi.board.asset.tag: Base Board Asset Tag# dmi.board.name: Mac-2BD1B31983FE1663 dmi.board.vendor: Apple Inc. dmi.board.version: MacBookPro11,3 dmi.chassis.type: 10 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-2BD1B31983FE1663 dmi.modalias: dmi:bvnAppleInc.:bvrMBP112.88Z.0138.B02.1310181745:bd10/18/2013:svnAppleInc.:pnMacBookPro11,3:pvr1.0:rvnAppleInc.:rnMac-2BD1B31983FE1663:rvrMacBookPro11,3:cvnAppleInc.:ct10:cvrMac-2BD1B31983FE1663: dmi.product.name: MacBookPro11,3 dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1321824/+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
