Public bug reported:
The battery backup drop significantly since upgrading to linux kernel
3.8.0-25 on Lenovo X230 laptop
$ uname -a
Linux arky-ThinkPad-X230 3.8.0-25-generic #37-Ubuntu SMP Thu Jun 6 20:47:07 UTC
2013 x86_64 x86_64 x86_64 GNU/Linux
Some of stats from powertop:
The battery reports a discharge rate of 9.93 W
System baseline power is estimated at 3.98 W
Power est. Usage Device name
5.66 W 2972 rpm Laptop fan
0.0 pkts/s Network interface: eth0 (e1000e)
931 mW 100.0% Audio codec hwC0D0: Realtek (pulseaudio )
188 mW 13.4% CPU use
62.4 mW 40.0% Display backlight
62.4 mW 15.3% Display backlight
0 mW 50968 pkts/s Network interface: wlan0 (iwlwifi)
0 mW 100.0% USB device: Biometric Coprocessor (Auth)
0 mW 100.0% Radio device: iwlwifi
0 mW 100.0% USB device: EHCI Host Controller
0 mW 100.0% USB device: usb-device-8087-0024
0 mW 30.2 ops/s GPU
0 mW 0.0% Audio codec hwC0D3: Intel
0 mW 0.0% USB device: xHCI Host Controller
0 mW 0.0% USB device: Integrated Camera (Chicony Electroni
0 mW 0.0% Radio device: thinkpad_acpi
0 mW 0.0% USB device: xHCI Host Controller
0 mW 0.0% USB device: usb-device-8087-0024
0 mW 0.0% USB device: EHCI Host Controller
100.0% PCI Device: Ricoh Co Ltd PCIe SDXC/MMC Host Cont
100.0% PCI Device: Intel Corporation 7 Series/C210 Seri
100.0% PCI Device: Intel Corporation 7 Series/C210 Seri
100.0% PCI Device: Intel Corporation 7 Series/C210 Seri
100.0% PCI Device: Intel Corporation 7 Series/C210 Seri
100.0% PCI Device: Intel Corporation Centrino Advanced-
100.0% PCI Device: Intel Corporation QM77 Express Chips
100.0% PCI Device: Intel Corporation 7 Series Chipset F
>> Bad NMI watchdog should be turned off
Bad VM writeback timeout
Bad Enable SATA link power management for /dev/sda
Bad Autosuspend for USB device Biometric Coprocessor [Auth]
Bad Runtime PM for PCI Device Intel Corporation 7 Series/C210
Bad Runtime PM for PCI Device Intel Corporation 7 Series/C210
Bad Runtime PM for PCI Device Intel Corporation 7 Series Chip
Bad Runtime PM for PCI Device Intel Corporation QM77 Express
Bad Runtime PM for PCI Device Intel Corporation 7 Series/C210
Bad Runtime PM for PCI Device Intel Corporation 7 Series/C210
Bad Runtime PM for PCI Device Intel Corporation 7 Series/C210
Bad Runtime PM for PCI Device Intel Corporation 3rd Gen Core
Bad Runtime PM for PCI Device Intel Corporation 7 Series/C210
Bad Runtime PM for PCI Device Intel Corporation 7 Series/C210
Bad Runtime PM for PCI Device Intel Corporation 7 Series/C210
Bad Runtime PM for PCI Device Intel Corporation 7 Series/C210
Good Wireless Power Saving for interface wlan0
Good Enable Audio codec power management
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 13.04
Release: 13.04
Codename: raring
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: linux-image (not installed)
ProcVersionSignature: Ubuntu 3.8.0-25.37-generic 3.8.13
Uname: Linux 3.8.0-25-generic x86_64
ApportVersion: 2.9.2-0ubuntu8.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: arky 6776 F.... pulseaudio
Date: Wed Jun 26 23:20:02 2013
HibernationDevice: RESUME=UUID=c5f56686-e811-4a8d-8f78-b24d09979e81
InstallationDate: Installed on 2013-03-22 (95 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: LENOVO 2306CTO
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-25-generic
root=UUID=f5b20430-0889-4e78-9a8b-a444ea60eb74 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.8.0-25-generic N/A
linux-backports-modules-3.8.0-25-generic N/A
linux-firmware 1.106
SourcePackage: linux
UpgradeStatus: Upgraded to raring on 2013-05-04 (53 days ago)
dmi.bios.date: 02/22/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: G2ET92WW (2.52 )
dmi.board.asset.tag: Not Available
dmi.board.name: 2306CTO
dmi.board.vendor: LENOVO
dmi.board.version: Win8 Pro DPK TPG
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvrG2ET92WW(2.52):bd02/22/2013:svnLENOVO:pn2306CTO:pvrThinkPadX230:rvnLENOVO:rn2306CTO:rvrWin8ProDPKTPG:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2306CTO
dmi.product.version: ThinkPad X230
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug raring
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https://bugs.launchpad.net/bugs/1194947
Title:
Power management: Audio codec
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