Public bug reported:
Since upgrading to kernel 4.15, my laptop (HP Elitebook 850 G3) lasts
less than one hour on a fully charged battery. On Ubuntu 17.10 with
kernel 4.13, the autonomy was typically in excess of 5 hours.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-lowlatency 4.15.0.20.23
ProcVersionSignature: Ubuntu 4.15.0-20.21-lowlatency 4.15.17
Uname: Linux 4.15.0-20-lowlatency x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: jzimm 3538 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Fri Apr 27 20:10:02 2018
InstallationDate: Installed on 2018-04-03 (24 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180402)
MachineType: HP HP EliteBook 850 G3
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/bionic/vmlinuz-4.15.0-20-lowlatency
root=UUID=b6480aee-7c63-4ce4-9e8d-cdbef768b982 ro
rootflags=subvol=@,relatime,autodefrag,space_cache quiet splash
module.sig_enforce=1 intel_pstate=skylake_hwp radeon.si_support=0
radeon.cik_support=0 amdgpu.si_support=1 amdgpu.cik_support=1 vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.15.0-20-lowlatency N/A
linux-backports-modules-4.15.0-20-lowlatency N/A
linux-firmware 1.173
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/31/2016
dmi.bios.vendor: HP
dmi.bios.version: N75 Ver. 01.10
dmi.board.name: 8079
dmi.board.vendor: HP
dmi.board.version: KBC Version 85.6F
dmi.chassis.asset.tag: 5CG6351LQL
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.modalias:
dmi:bvnHP:bvrN75Ver.01.10:bd07/31/2016:svnHP:pnHPEliteBook850G3:pvr:rvnHP:rn8079:rvrKBCVersion85.6F:cvnHP:ct10:cvr:
dmi.product.family: 103C_5336AN G=N L=BUS B=HP S=ELI
dmi.product.name: HP EliteBook 850 G3
dmi.sys.vendor: HP
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic wayland-session
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https://bugs.launchpad.net/bugs/1767324
Title:
Extreme regression in battery autonomy with kernel 4.15
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