| 2020-02-24 18:57:01 |
Alex Hung |
bug |
|
|
added bug |
| 2020-02-24 19:00:08 |
Ubuntu Kernel Bot |
linux (Ubuntu): status |
New |
Incomplete |
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| 2020-02-24 20:13:30 |
Alex Hung |
tags |
|
apport-collected bionic |
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| 2020-02-24 20:13:31 |
Alex Hung |
description |
CPU0 (and sometimes other cores too) is not entering C10 half of the time when system is idle. "top" shows a touchpad driver takes 5%~6% of CPU usage, and "/proc/interrupts" reveals considerable interrupts from the touchpad device. This results in additional 4~5 watt power consumption.
This anomaly can be workarounded by simply touching the touchpad - in other words, it is more visible when using a USB mouse.
This can be fixed by a kernel 5.5 commit 52cf93e63ee6 which is included in bionic (4.15) and focal kernel (5.4) but not in eoan (5.3). |
CPU0 (and sometimes other cores too) is not entering C10 half of the time when system is idle. "top" shows a touchpad driver takes 5%~6% of CPU usage, and "/proc/interrupts" reveals considerable interrupts from the touchpad device. This results in additional 4~5 watt power consumption.
This anomaly can be workarounded by simply touching the touchpad - in other words, it is more visible when using a USB mouse.
This can be fixed by a kernel 5.5 commit 52cf93e63ee6 which is included in bionic (4.15) and focal kernel (5.4) but not in eoan (5.3).
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.11
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: alexhung 3397 F.... pulseaudio
/dev/snd/pcmC0D0p: alexhung 3397 F...m pulseaudio
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 18.04
InstallationDate: Installed on 2019-10-29 (118 days ago)
InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
MachineType: Dell Inc. Precision 3530
Package: linux (not installed)
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-40-generic root=UUID=b0c947ea-9aa0-4ca2-a634-7b925900c129 ro quiet splash vt.handoff=1
ProcVersionSignature: Ubuntu 5.3.0-40.32~18.04.1-generic 5.3.18
RelatedPackageVersions:
linux-restricted-modules-5.3.0-40-generic N/A
linux-backports-modules-5.3.0-40-generic N/A
linux-firmware 1.173.14
Tags: bionic
Uname: Linux 5.3.0-40-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip docker lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 01/30/2018
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 99.6.4
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr99.6.4:bd01/30/2018:svnDellInc.:pnPrecision3530:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct10:cvr:
dmi.product.family: Precision
dmi.product.name: Precision 3530
dmi.product.sku: 0820
dmi.sys.vendor: Dell Inc. |
|
| 2020-02-24 20:13:32 |
Alex Hung |
attachment added |
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AlsaInfo.txt https://bugs.launchpad.net/bugs/1864527/+attachment/5330668/+files/AlsaInfo.txt |
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| 2020-02-24 20:13:34 |
Alex Hung |
attachment added |
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CRDA.txt https://bugs.launchpad.net/bugs/1864527/+attachment/5330669/+files/CRDA.txt |
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| 2020-02-24 20:13:36 |
Alex Hung |
attachment added |
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CurrentDmesg.txt https://bugs.launchpad.net/bugs/1864527/+attachment/5330670/+files/CurrentDmesg.txt |
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| 2020-02-24 20:13:37 |
Alex Hung |
attachment added |
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IwConfig.txt https://bugs.launchpad.net/bugs/1864527/+attachment/5330671/+files/IwConfig.txt |
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| 2020-02-24 20:13:38 |
Alex Hung |
attachment added |
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Lspci.txt https://bugs.launchpad.net/bugs/1864527/+attachment/5330672/+files/Lspci.txt |
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| 2020-02-24 20:13:40 |
Alex Hung |
attachment added |
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Lsusb.txt https://bugs.launchpad.net/bugs/1864527/+attachment/5330673/+files/Lsusb.txt |
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| 2020-02-24 20:13:41 |
Alex Hung |
attachment added |
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ProcCpuinfo.txt https://bugs.launchpad.net/bugs/1864527/+attachment/5330674/+files/ProcCpuinfo.txt |
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| 2020-02-24 20:13:43 |
Alex Hung |
attachment added |
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ProcCpuinfoMinimal.txt https://bugs.launchpad.net/bugs/1864527/+attachment/5330675/+files/ProcCpuinfoMinimal.txt |
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| 2020-02-24 20:13:45 |
Alex Hung |
attachment added |
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ProcEnviron.txt https://bugs.launchpad.net/bugs/1864527/+attachment/5330676/+files/ProcEnviron.txt |
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| 2020-02-24 20:13:46 |
Alex Hung |
attachment added |
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ProcInterrupts.txt https://bugs.launchpad.net/bugs/1864527/+attachment/5330677/+files/ProcInterrupts.txt |
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| 2020-02-24 20:13:47 |
Alex Hung |
attachment added |
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ProcModules.txt https://bugs.launchpad.net/bugs/1864527/+attachment/5330678/+files/ProcModules.txt |
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| 2020-02-24 20:13:49 |
Alex Hung |
attachment added |
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PulseList.txt https://bugs.launchpad.net/bugs/1864527/+attachment/5330679/+files/PulseList.txt |
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| 2020-02-24 20:13:50 |
Alex Hung |
attachment added |
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RfKill.txt https://bugs.launchpad.net/bugs/1864527/+attachment/5330680/+files/RfKill.txt |
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| 2020-02-24 20:13:52 |
Alex Hung |
attachment added |
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UdevDb.txt https://bugs.launchpad.net/bugs/1864527/+attachment/5330681/+files/UdevDb.txt |
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| 2020-02-24 20:13:55 |
Alex Hung |
attachment added |
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WifiSyslog.txt https://bugs.launchpad.net/bugs/1864527/+attachment/5330682/+files/WifiSyslog.txt |
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| 2020-02-26 22:17:16 |
Alex Hung |
nominated for series |
|
Ubuntu Eoan |
|
| 2020-02-26 22:17:16 |
Alex Hung |
bug task added |
|
linux (Ubuntu Eoan) |
|
| 2020-03-04 02:43:38 |
Alex Hung |
linux (Ubuntu Eoan): assignee |
|
Alex Hung (alexhung) |
|
| 2020-03-04 02:43:43 |
Alex Hung |
linux (Ubuntu Eoan): assignee |
Alex Hung (alexhung) |
|
|
| 2020-03-04 02:43:45 |
Alex Hung |
linux (Ubuntu): assignee |
|
Alex Hung (alexhung) |
|
| 2020-03-04 02:46:12 |
Anthony Wong |
nominated for series |
|
Ubuntu Focal |
|
| 2020-03-04 02:46:12 |
Anthony Wong |
bug task added |
|
linux (Ubuntu Focal) |
|
| 2020-03-04 02:46:20 |
Anthony Wong |
linux (Ubuntu Focal): status |
Incomplete |
Fix Released |
|
| 2020-03-04 02:46:24 |
Anthony Wong |
linux (Ubuntu Eoan): status |
New |
Confirmed |
|
| 2020-03-04 02:46:31 |
Anthony Wong |
linux (Ubuntu Eoan): assignee |
|
Alex Hung (alexhung) |
|
| 2020-03-04 02:46:34 |
Anthony Wong |
linux (Ubuntu Focal): assignee |
Alex Hung (alexhung) |
|
|
| 2020-03-04 02:46:37 |
Anthony Wong |
linux (Ubuntu Eoan): importance |
Undecided |
Medium |
|
| 2020-03-13 12:25:34 |
Kleber Sacilotto de Souza |
linux (Ubuntu Eoan): status |
Confirmed |
Fix Committed |
|
| 2020-03-13 17:31:17 |
Alex Hung |
linux (Ubuntu Eoan): status |
Fix Committed |
Fix Released |
|
| 2020-03-13 17:31:38 |
Alex Hung |
linux (Ubuntu Eoan): status |
Fix Released |
Fix Committed |
|
| 2020-08-18 16:58:32 |
Brian Murray |
linux (Ubuntu Eoan): status |
Fix Committed |
Won't Fix |
|
| 2020-08-19 13:23:06 |
Jeff Lane |
tags |
apport-collected bionic |
apport-collected bionic ubuntu-certified |
|
