apport information

** Attachment added: "RfKill.txt"
   https://bugs.launchpad.net/bugs/1864527/+attachment/5330680/+files/RfKill.txt

-- 
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/1864527

Title:
  CPU0 is busy after S3 in Dell Precision 3530

Status in linux package in Ubuntu:
  Incomplete

Bug 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).
  --- 
  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.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1864527/+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

Reply via email to