Public bug reported: When no display is connected to the HDMI port of the integrated graphics card (i915), one core will go to 100% load until a display is plugged in again.
For a headless system the workaround is to blacklist the i915 module in grub. There are several patches around: https://bugs.freedesktop.org/attachment.cgi?id=145826 https://github.com/torvalds/linux/commit/67322bec979caa33e0ac4505306bf70af46208e4 maybe a backport of one of these patches to the current kernel would be an option? ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: linux-image-5.3.0-29-generic 5.3.0-29.31 ProcVersionSignature: Ubuntu 5.3.0-29.31-generic 5.3.13 Uname: Linux 5.3.0-29-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair AlsaVersion: Advanced Linux Sound Architecture Driver Version k5.3.0-29-generic. AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay' ApportVersion: 2.20.11-0ubuntu8.2 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D2', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer': 'amixer' Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer': 'amixer' Date: Thu Jan 30 00:55:42 2020 HibernationDevice: RESUME=UUID=c09a58c4-725a-4fb9-8cc1-7e0ac26f1350 InstallationDate: Installed on 2016-11-05 (1180 days ago) InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig' Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 05e3:0610 Genesys Logic, Inc. 4-port hub Bus 001 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: ASUS All Series ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-29-generic root=UUID=72f24acb-8f4a-42c0-a421-b2f9f3298a6e ro module_blacklist=i915 RelatedPackageVersions: linux-restricted-modules-5.3.0-29-generic N/A linux-backports-modules-5.3.0-29-generic N/A linux-firmware 1.183.3 RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill' SourcePackage: linux UpgradeStatus: Upgraded to eoan on 2020-01-21 (8 days ago) dmi.bios.date: 02/20/2017 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0510 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: N3150I-C dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0510:bd02/20/2017:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnN3150I-C:rvrRevX.0x:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.family: ASUS MB dmi.product.name: All Series dmi.product.sku: All dmi.product.version: System Version dmi.sys.vendor: ASUS ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug eoan -- 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/1861362 Title: i915 kernel module loads 1 cpu core 100% Status in linux package in Ubuntu: New Bug description: When no display is connected to the HDMI port of the integrated graphics card (i915), one core will go to 100% load until a display is plugged in again. For a headless system the workaround is to blacklist the i915 module in grub. There are several patches around: https://bugs.freedesktop.org/attachment.cgi?id=145826 https://github.com/torvalds/linux/commit/67322bec979caa33e0ac4505306bf70af46208e4 maybe a backport of one of these patches to the current kernel would be an option? ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: linux-image-5.3.0-29-generic 5.3.0-29.31 ProcVersionSignature: Ubuntu 5.3.0-29.31-generic 5.3.13 Uname: Linux 5.3.0-29-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair AlsaVersion: Advanced Linux Sound Architecture Driver Version k5.3.0-29-generic. AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay' ApportVersion: 2.20.11-0ubuntu8.2 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D2', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer': 'amixer' Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer': 'amixer' Date: Thu Jan 30 00:55:42 2020 HibernationDevice: RESUME=UUID=c09a58c4-725a-4fb9-8cc1-7e0ac26f1350 InstallationDate: Installed on 2016-11-05 (1180 days ago) InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig' Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 05e3:0610 Genesys Logic, Inc. 4-port hub Bus 001 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: ASUS All Series ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-29-generic root=UUID=72f24acb-8f4a-42c0-a421-b2f9f3298a6e ro module_blacklist=i915 RelatedPackageVersions: linux-restricted-modules-5.3.0-29-generic N/A linux-backports-modules-5.3.0-29-generic N/A linux-firmware 1.183.3 RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill' SourcePackage: linux UpgradeStatus: Upgraded to eoan on 2020-01-21 (8 days ago) dmi.bios.date: 02/20/2017 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0510 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: N3150I-C dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0510:bd02/20/2017:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnN3150I-C:rvrRevX.0x:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.family: ASUS MB dmi.product.name: All Series dmi.product.sku: All dmi.product.version: System Version dmi.sys.vendor: ASUS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861362/+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
