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17 Posts

08-18-2009

Austria

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  • Message 171 of 183

Re: T400 Battery Life on Windows 7

2010-06-17, 5:29 AM

On the U330 Thread Mark mentioned that they work on the problem. Unfortunately he didn't tell a date.

 

BTW - same problem here.

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59 Posts

10-06-2008

Toronto

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  • Message 172 of 183

Re: T400 Battery Life on Windows 7

2010-07-09, 15:56 PM

I recently reinstalled Windows 7 x64 back on to my X200.  I noticed a few changes.  A new package called Lenovo Enhanced Experience was part of the system update.  After installing it, I noticed that the Power profiles behaves a bit differently.  On Maximum Battery Life profile, the desktop changes from 3D to 2D (ie. it turns off some of the Aero features).  Which is good, it actually gets the battery draw from the old 13W to around 10W now.  But, really it should be even lower if the **bleep** fan would shut off.  I've cleared out all the dust and the computer barely gets hot, I dunno why the fan is still running.  I wish there was a way to turn it down.  It's definitely drawing more power than needed to cool the CPU.

 

Still the overall effect is minimal at best.  I get around 7Hrs on XP and only 6:30Hrs on Windows 7.  The gap is definitely smaller but it can definitely get better.  Albeit this is on my X200, not sure what the effect is for other people.

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2 Posts

07-11-2010

Murray

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  • Message 173 of 183

Re: T400 Battery Life on Windows 7

2010-07-16, 2:42 AM

I am encountering the same issue. I previously had installed Windows Vista Home Premium (64 bit) which operated great, I then purchased my Windows 7 upgrade and installed it, my battery used to run in POWER SAVER mode to up to 4 hours, but since I installed Windows 7 my computer (last week), in POWER SAVER mode can run to only up to 2.5 hours MAXIMUM.

 

I've read that people have had similar problems with the battery  but I'm not sure if there is something I could do to have my battery life the way it was, if there is something I could do please let me know... or should I just go back to Vista? Please help me out with this issue.

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1 Posts

07-17-2010

Palo Alto, CA

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  • Message 174 of 183

Re: Battery Life Decrease In Windows 7

2010-07-17, 0:38 AM

Hi,

 

I just reformatted and installed Windows 7 32bit on my Thinkpad T400s.  I used to get 5+ hours of battery life, now I'm getting about 3 hours (using the default settings on "power source optimized" plan).  I have installed all the latest lenovo software and drivers (including optional ones like bios update) using Lenovo's System Update, and I have tried using Lenovo's power manager and also uninstalling it. 

 

I ran powercfg -energy and got the following report.  Does anyone know what I can do to fix these errors and/or improve my battery life?  Unfortunately Lenovo tech support was no help at all and Windows wants to charge me $59 for tech support.

 

Thanks so much!

-Jon

 

P.S.  I checked the task manager and my CPU seemed to be running at only 2-5%, I don't know why the report showed avg CPU usage of almost 30%.

 

Power Efficiency Diagnostics Report

Computer Name

JON-PC

Scan Time

2010-07-17T00:22:19Z

Scan Duration

60 seconds

System Manufacturer

LENOVO

System Product Name

2801CTO

BIOS Date

04/21/2010

BIOS Version

6HET29WW (1.14 )

OS Build

7600

Platform Role

PlatformRoleMobile

Plugged In

false

Process Count

91

Thread Count

970

Report GUID

{757f84b4-015d-4238-82d9-186f3d2b66de}

Analysis Results

Errors

Power Policy:Dim timeout is disabled (Plugged In)

The display is not configured to automatically dim after a period of inactivity.

Power Policy:Sleep timeout is disabled (Plugged In)

The computer is not configured to automatically sleep after a period of inactivity.

Power Policy:Minimum processor performance state is 100% (Plugged In)

The processor is not configured to automatically reduce power consumption based on activity.

Power Policy:PCI Express ASPM is disabled (Plugged In)

The current power policy for PCI Express Active State Power Management (ASPM) is configured to Off.

CPU Utilization:Processor utilization is high

The average processor utilization during the trace was high. The system will consume less power when the average processor utilization is very low. Review processor utilization for individual processes to determine which applications and services contribute the most to total processor utilization.

Average Utilization (%) 

29.32

Platform Power Management Capabilities:PCI Express Active-State Power Management (ASPM) Disabled

PCI Express Active-State Power Management (ASPM) has been disabled due to a known incompatibility with the hardware in this computer.

Warnings

Power Policy:Display timeout is long (Plugged In)

The display is configured to turn off after longer than 10 minutes.

Timeout (seconds) 

900

CPU Utilization:Individual process with significant processor utilization.

This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name 

wmpnetwk.exe

PID 

4424

Average Utilization (%) 

15.22

Module 

Average Module Utilization (%) 

\SystemRoot\system32\ntkrnlpa.exe

4.56

\Device\HarddiskVolume1\Windows\System32\ntdll.dll

1.83

\Device\HarddiskVolume1\Windows\System32\wmp.dll

1.42

CPU Utilization:Individual process with significant processor utilization.

This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name 

svchost.exe

PID 

1024

Average Utilization (%) 

4.42

Module 

Average Module Utilization (%) 

\Device\HarddiskVolume1\Windows\System32\sysmain.dll

3.58

\SystemRoot\system32\ntkrnlpa.exe

0.48

\SystemRoot\System32\Drivers\Ntfs.sys

0.08

CPU Utilization:Individual process with significant processor utilization.

This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name 

AcSvc.exe

PID 

3472

Average Utilization (%) 

1.54

Module 

Average Module Utilization (%) 

\SystemRoot\system32\ntkrnlpa.exe

0.69

\Device\HarddiskVolume1\Windows\System32\KernelBase.dll

0.37

\Device\HarddiskVolume1\Windows\System32\kernel32.dll

0.16

CPU Utilization:Individual process with significant processor utilization.

This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name 

SavService.exe

PID 

1300

Average Utilization (%) 

1.53

Module 

Average Module Utilization (%) 

\Device\HarddiskVolume1\Program Files\Sophos\Sophos Anti-Virus\veex.dll

0.43

\SystemRoot\system32\ntkrnlpa.exe

0.36

\Device\HarddiskVolume1\Windows\System32\ntdll.dll

0.22

CPU Utilization:Individual process with significant processor utilization.

This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name 

lsass.exe

PID 

608

Average Utilization (%) 

1.20

Module 

Average Module Utilization (%) 

\SystemRoot\system32\ntkrnlpa.exe

0.72

\Device\HarddiskVolume1\Windows\System32\rpcrt4.dll

0.17

\Device\HarddiskVolume1\Windows\System32\ntdll.dll

0.16

CPU Utilization:Individual process with significant processor utilization.

This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name 

WUDFHost.exe

PID 

1368

Average Utilization (%) 

1.09

Module 

Average Module Utilization (%) 

\Device\HarddiskVolume1\Windows\System32\msvcrt.dll

0.39

\SystemRoot\system32\ntkrnlpa.exe

0.28

\Device\HarddiskVolume1\Windows\System32\ntdll.dll

0.11

CPU Utilization:Individual process with significant processor utilization.

This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name 

System

PID 

4

Average Utilization (%) 

1.02

Module 

Average Module Utilization (%) 

\SystemRoot\system32\ntkrnlpa.exe

0.77

\SystemRoot\system32\halmacpi.dll

0.07

\SystemRoot\System32\Drivers\Ntfs.sys

0.04

CPU Utilization:Individual process with significant processor utilization.

This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name 

svchost.exe

PID 

372

Average Utilization (%) 

0.41

Module 

Average Module Utilization (%) 

\SystemRoot\system32\ntkrnlpa.exe

0.22

\Device\HarddiskVolume1\Windows\System32\ntdll.dll

0.04

\SystemRoot\system32\halmacpi.dll

0.02

CPU Utilization:Individual process with significant processor utilization.

This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name 

explorer.exe

PID 

1592

Average Utilization (%) 

0.27

Module 

Average Module Utilization (%) 

\SystemRoot\System32\win32k.sys

0.04

\SystemRoot\system32\ntkrnlpa.exe

0.04

\Device\HarddiskVolume1\Windows\System32\shell32.dll

0.02

Information

Platform Timer Resolution:Platform Timer Resolution

The default platform timer resolution is 15.6ms (15625000ns) and should be used whenever the system is idle. If the timer resolution is increased, processor power management technologies may not be effective. The timer resolution may be increased due to multimedia playback or graphical animations.

Current Timer Resolution (100ns units) 

156000

Power Policy:Active Power Plan

The current power plan in use

Plan Name 

Custom

Plan GUID 

{46eaaf41-3089-45be-9100-7a137c2c315e}

Power Policy:Power Plan Personality (On Battery)

The personality of the current power plan when the system is on battery power.

Personality 

Balanced

Power Policy:Video Quality (On Battery)

Enables Windows Media Player to optimize for quality or power savings when playing video.

Quality Mode 

Optimize for Power Savings

Power Policy:Power Plan Personality (Plugged In)

The personality of the current power plan when the system is plugged in.

Personality 

Balanced

Power Policy:Video quality (Plugged In)

Enables Windows Media Player to optimize for quality or power savings when playing video.

Quality Mode 

Optimize for Video Quality

System Availability Requests:Analysis Success

Analysis was successful. No energy efficiency problems were found. No information was returned.

USB Suspend:Analysis Success

Analysis was successful. No energy efficiency problems were found. No information was returned.

Battery:Battery Information

Battery ID 

461Panasonic42T4690

Manufacturer 

Panasonic

Serial Number 

461

Chemistry 

LION

Long Term 

1

Design Capacity 

43290

Last Full Charge 

39740


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7 Posts

07-22-2009

West Virginia

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  • Message 175 of 183

Re: Battery Life Decrease In Windows 7

2010-08-01, 1:00 AM

Just posting on here to let everyone know that Lenovo has released a BIOS update that has solved the return from standby which left both the integrated and discrete graphics powered.  I'm getting approximately 4 hours of runtime out of my t400 with a 4 cell battery running on W7 X64.  The update is available through TVSA.

 

Nevermind . . . False Alarm.  I'm still suffering from the surplus battery drain but I could have sworn I saw a BIOS update on TVSA that claimed to remedy the problem (and I also thought I came back from standby with an expected drain on the battery in integrated mode).  I'm sorry if I got anyone's hopes up!

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2 Posts

01-15-2010

West Des Moines, IA

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  • Message 176 of 183

Re: Battery Life Decrease In Windows 7

2010-08-01, 1:28 AM

Could someone please post the link to this fix?

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9572 Posts

01-13-2008

United States of America

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  • Message 177 of 183

Re: Battery Life Decrease In Windows 7

2010-08-01, 3:09 AM

 


wrote:

Just posting on here to let everyone know that Lenovo has released a BIOS update that has solved the return from standby which left both the integrated and discrete graphics powered.  I'm getting approximately 4 hours of runtime out of my t400 with a 4 cell battery running on W7 X64.  The update is available through TVSA.


 

What's the BIOS version?  On  my T400, Win 7 Pro 64, TVSU doesn't  pick up a BIOS up date with anything about this in the details.  Only fixes LCD brightness on resuming in Version 3.18-1.06 7UETnnWW 2010/06/15.

 

Thanks,

Z.


The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc.


The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored - questions and answers belong in the forum so that others may contribute and benefit. ... GeezBlog

 

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4 Posts

02-01-2009

Italy

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  • Message 178 of 183

Re: Battery Life Decrease In Windows 7

2010-08-25, 15:38 PM

Anyone has installed the new 3.29 Power Manager?

It was released few days ago!

 

Any changement?? It says it's fully compatible with windows 7 64!

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2 Posts

11-27-2010

63

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  • Message 179 of 183

Re: Battery Life Decrease In Windows 7

2010-11-27, 10:01 AM

Hello everyone, 

 

I just found, that Lenovo released new ATI graphic card driver and in description is "magic" note :

 

Version 8.752.4-101022a-107489C-Lenovo

  • (Fix) Fixed an issue where the power consumption increased after resuming normal operation from sleep state.
Link:
Maybe someone from Lenovo (Mark) can explain, why this most important update is NOT in system update offer. 
I am going to try this driver and hope it will work. After two years of pain with my T500 is on the time.
Best regards
Jiri Panacek
Czech Republic
Europe
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59 Posts

10-06-2008

Toronto

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  • Message 180 of 183

Re: Battery Life Decrease In Windows 7

2010-12-10, 19:13 PM
So, after 2 years, my battery is now official DEAD in Windows 7. It says it still has 5500 Wh left but it won't let me use the battery anymore, because the battery is in poor health. That is really messed up. Like the computer won't even boot even though the battery is at 100% of what it can do. Now I'm out money for having to buy a new battery.

Windows 7 is seriously still killing batteries like no tomorrow, this is really bad. Beyond bad.
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