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

Bug #1808108 reported by Daniel van Vugt
22
This bug affects 3 people
Affects Status Importance Assigned to Milestone
The Ubuntu Power Consumption Project
Fix Released
Medium
Unassigned
linux (Ubuntu)
Invalid
Medium
Unassigned
nvidia-graphics-drivers-410 (Ubuntu)
Won't Fix
Medium
Unassigned
nvidia-graphics-drivers-460 (Ubuntu)
Fix Released
Undecided
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

Revision history for this message
Daniel van Vugt (vanvugt) wrote :
Changed in ubuntu-power-consumption:
importance: Undecided → Medium
Changed in linux (Ubuntu):
importance: Undecided → Medium
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote : Missing required logs.

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
Revision history for this message
Daniel van Vugt (vanvugt) wrote : AlsaInfo.txt

apport information

tags: added: apport-collected
description: updated
Revision history for this message
Daniel van Vugt (vanvugt) wrote : CRDA.txt

apport information

Revision history for this message
Daniel van Vugt (vanvugt) wrote : CurrentDmesg.txt

apport information

Revision history for this message
Daniel van Vugt (vanvugt) wrote : IwConfig.txt

apport information

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Daniel van Vugt (vanvugt) wrote : Lspci.txt

apport information

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Daniel van Vugt (vanvugt) wrote : Lsusb.txt

apport information

Revision history for this message
Daniel van Vugt (vanvugt) wrote : ProcCpuinfo.txt

apport information

Revision history for this message
Daniel van Vugt (vanvugt) wrote : ProcCpuinfoMinimal.txt

apport information

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Daniel van Vugt (vanvugt) wrote : ProcEnviron.txt

apport information

Revision history for this message
Daniel van Vugt (vanvugt) wrote : ProcInterrupts.txt

apport information

Revision history for this message
Daniel van Vugt (vanvugt) wrote : ProcModules.txt

apport information

Revision history for this message
Daniel van Vugt (vanvugt) wrote : RfKill.txt

apport information

Revision history for this message
Daniel van Vugt (vanvugt) wrote : UdevDb.txt

apport information

Revision history for this message
Daniel van Vugt (vanvugt) wrote : WifiSyslog.txt

apport information

Changed in linux (Ubuntu):
status: Incomplete → Confirmed
Revision history for this message
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in nvidia-graphics-drivers-410 (Ubuntu):
status: New → Confirmed
Changed in ubuntu-power-consumption:
status: New → Confirmed
tags: added: nvidia-drm.modeset
Revision history for this message
Daniel van Vugt (vanvugt) wrote :

No problem in driver version 460 on hirsute. It might have been fixed in an earlier version than that...

Changed in nvidia-graphics-drivers-410 (Ubuntu):
status: Confirmed → Won't Fix
Changed in linux (Ubuntu):
status: Confirmed → Invalid
Changed in nvidia-graphics-drivers-460 (Ubuntu):
status: New → Fix Released
Changed in ubuntu-power-consumption:
status: Confirmed → Fix Released
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