nvidia-drm.modeset=1 incurs very high CPU usage in [kworker/u16:1+events_unbound]

Bug #1808108 reported by Daniel van Vugt on 2018-12-12
10
This bug affects 1 person
Affects Status Importance Assigned to Milestone
The Ubuntu Power Consumption Project
Medium
Unassigned
linux (Ubuntu)
Medium
Unassigned
nvidia-graphics-drivers-410 (Ubuntu)
Medium
Unassigned

Bug Description

nvidia-drm.modeset=1 incurs very high CPU usage in the process [kworker/u16:1+events_unbound]

See the attached screenshot of a single client animating at 59.95Hz.

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: nvidia-kernel-source-410 410.78-0ubuntu3
ProcVersionSignature: Ubuntu 4.18.0-11.12-generic 4.18.12
Uname: Linux 4.18.0-11-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.10-0ubuntu14
Architecture: amd64
Date: Wed Dec 12 16:00:46 2018
Dependencies:

InstallationDate: Installed on 2018-12-04 (8 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Alpha amd64 (20181203)
SourcePackage: nvidia-graphics-drivers-410
UpgradeStatus: No upgrade log present (probably fresh install)
---
ProblemType: Bug
ApportVersion: 2.20.10-0ubuntu14
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D7p', '/dev/snd/pcmC1D3p', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
DistroRelease: Ubuntu 19.04
InstallationDate: Installed on 2018-12-04 (8 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Alpha amd64 (20181203)
MachineType: LENOVO 10M7CTO1WW
NonfreeKernelModules: nvidia_modeset nvidia
Package: nvidia-graphics-drivers-410
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-11-generic root=UUID=052b7096-9b82-4712-b596-7629d5f6498c ro quiet splash nvidia-drm.modeset=1 vt.handoff=1
ProcVersionSignature: Ubuntu 4.18.0-11.12-generic 4.18.12
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-4.18.0-11-generic N/A
 linux-backports-modules-4.18.0-11-generic N/A
 linux-firmware 1.176
Tags: disco
Uname: Linux 4.18.0-11-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 02/06/2018
dmi.bios.vendor: LENOVO
dmi.bios.version: M16KT47A
dmi.board.name: 3102
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40709 WIN 3259627060530
dmi.chassis.type: 3
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrM16KT47A:bd02/06/2018:svnLENOVO:pn10M7CTO1WW:pvrThinkCentreM710s:rvnLENOVO:rn3102:rvrSDK0J40709WIN3259627060530:cvnLENOVO:ct3:cvrNone:
dmi.product.family: ThinkCentre M710s
dmi.product.name: 10M7CTO1WW
dmi.product.sku: LENOVO_MT_10M7_BU_Think_FM_ThinkCentre M710s
dmi.product.version: ThinkCentre M710s
dmi.sys.vendor: LENOVO

Daniel van Vugt (vanvugt) wrote :
Changed in ubuntu-power-consumption:
importance: Undecided → Medium
Changed in linux (Ubuntu):
importance: Undecided → Medium

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1808108

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Changed in linux (Ubuntu):
status: New → Incomplete

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tags: added: apport-collected
description: updated

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Changed in linux (Ubuntu):
status: Incomplete → Confirmed
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