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[arky <hitmanarky@xxxxxxxxx>]

Thanks for the response. I believe this is a regression. The performance
degradation happened after the last update. Am hesitant to do a BIOS
upgrade right now.

Giving you my bios information as requested.

$ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
G2ET92WW (2.52 )
02/22/2013

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https://bugs.launchpad.net/bugs/1194947

Title:
  Power management: Audio codec

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  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

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