[Bug 602995] Re: Poor battery life on UL30VT due to NVidia graphics active

Stuart Bishop 602995 at bugs.launchpad.net
Thu Jul 15 08:19:33 UTC 2010


Identical behavior using Linux oops 2.6.35-020635rc1-generic #020635rc1
SMP Tue Jun 1 17:27:30 UTC 2010 x86_64 GNU/Linux


** Tags added: apport-collected

** Description changed:

  The ASUS UL30VT has two graphics cards like many modern laptops.
  Unfortunately, the higher powered NVidia g210m is active by default,
  chewing through an additional 4 watts of power and reducing battery life
  by a few hours.
  
  This will be a non-issue when Bug #312756 is fixed (graphics card hot
  switch). In the interim, laptop users need some way of disabling high
  powered graphics cards to conserve power. This is not possible in the
  ASUS UL30VT.
  
  A partial solution is available at
  http://ubuntuforums.org/showthread.php?t=1366605 which provides a
  package that disables the NVidia card. Unfortunately, the card is
  reactivated when resuming from suspend and not enabled by default on
  boot.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: linux-image-2.6.32-23-generic 2.6.32-23.37
  Regression: No
  Reproducible: Yes
  ProcVersionSignature: Ubuntu 2.6.32-23.37-generic 2.6.32.15+drm33.5
  Uname: Linux 2.6.32-23-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
  AplayDevices:
   **** List of PLAYBACK Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  stub       1669 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xfcbf4000 irq 22'
     Mixer name	: 'Realtek ALC269'
     Components	: 'HDA:10ec0269,104313a3,00100004'
     Controls      : 13
     Simple ctrls  : 8
  Card1.Amixer.info:
   Card hw:1 'NVidia'/'HDA NVidia at 0xfe97c000 irq 16'
     Mixer name	: 'Nvidia ID b'
     Components	: 'HDA:10de000b,10de0101,00100100'
     Controls      : 0
     Simple ctrls  : 0
  Card1.Amixer.values:
   
  Date: Thu Jul  8 12:00:37 2010
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=f811cf52-6896-4412-9ce1-bfb7b100a321
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
  MachineType: ASUSTeK Computer Inc. UL30VT
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-23-generic root=UUID=5c00a75e-2514-46d7-815d-59bb5f73ee1c ro quiet splash
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_US.utf8
   SHELL=/bin/bash
  RelatedPackageVersions: linux-firmware 1.34.1
  SourcePackage: linux
  dmi.bios.date: 11/04/2009
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 203
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: UL30VT
  dmi.board.vendor: ASUSTeK Computer Inc.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: ATN12345678901234567
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK Computer Inc.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr203:bd11/04/2009:svnASUSTeKComputerInc.:pnUL30VT:pvr1.0:rvnASUSTeKComputerInc.:rnUL30VT:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
  dmi.product.name: UL30VT
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK Computer Inc.
+ --- 
+ Architecture: amd64
+ DistroRelease: Ubuntu 10.04
+ EcryptfsInUse: Yes
+ InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
+ Package: linux (not installed)
+ ProcEnviron:
+  LANGUAGE=en_AU:en_GB:en
+  PATH=(custom, user)
+  LANG=en_AU.utf8
+  SHELL=/bin/bash
+ Tags: lucid
+ Uname: Linux 2.6.35-020635rc1-generic x86_64
+ UnreportableReason: The running kernel is not an Ubuntu kernel
+ UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

** Tags removed: needs-upstream-testing

-- 
Poor battery life on UL30VT due to NVidia graphics active 
https://bugs.launchpad.net/bugs/602995
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