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25 Posts

04-02-2008

TX

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Re: Battery Life Decrease In Windows 7

2009-12-27, 0:17 AM

I have upgraded from Vista 32 bit to Win 7 32 bit and after upgrading the drivers I experienced the same high consumption.

 

The wattage in Power Manager, when the graphics is switched to ATI, is about 12 W while the pc is idle. Switching to the Intel card lowers that to the minimum of about 9 W. However disabling the switchable graphics in bios and selecting the Intel card lets the wattage to drop to the minimum of about 7 W.

 

Also, the times I switched from the ATI to the Intel card in Vista, I used to hear a device disconnection sound like when you detach a usb drive. But now in win 7, I no longer hear that sound although the ATI device disappears from the device manager.

 

I noticed that people who experienced this problem had mostly upgraded to win 7. Is there anybody who has done a clean install of Win 7 and has this problem, too?

T400 2764CTO, Win 7 Ultimate 64-bit
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9347 Posts

01-13-2008

United States of America

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Re: Battery Life Decrease In Windows 7

2009-12-27, 1:01 AM

 


wrote:

I noticed that people who experienced this problem had mostly upgraded to win 7. Is there anybody who has done a clean install of Win 7 and has this problem, too?


 

YES.

 


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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19 Posts

04-30-2008

Spain

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Re: Battery Life Decrease In Windows 7

2009-12-30, 4:00 AM

I did it twice.

 

What I cannot understan is why we have to stick to Lenovo drivers. Why is not possible to download a switchable graphics driver from anywhere else in the world. Is there a Microsoft driver working fine for that purpouse? Intel? Ati? Anything at all?

 

 

Lenovo Thinkpad W500 4062-2XG (+2Gb RAM from Lenovo)

No external monitors. No conflicting software.

Latest BIOS and drivers.

Lenovo Thinkpad W500 4062-2XG (+2Gb RAM from Lenovo)
Windows 7 Ultimate x64 bits
No external monitors. No conflicting software.
Latest BIOS and drivers.
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19 Posts

04-30-2008

Spain

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Re: Battery Life Decrease In Windows 7

2009-12-30, 20:11 PM

Something to add to the Graphics driver problem:

 

1) I used to hear a sound like when you switch on/off a device much more often in Windows Vista 32 bits than in Windows 7 64 bits. It seems everything is always on in Windows 7 64 bits but it could be because of faulty drivers.

 

2) Internet Explorer cpu usage is frequently abnormaly high and it could be because of faulty add-ons

 

 

 

Lenovo Thinkpad W500 4062-2XG (+2Gb RAM from Lenovo)

No external monitors. No conflicting software.

Latest BIOS and drivers.

Lenovo Thinkpad W500 4062-2XG (+2Gb RAM from Lenovo)
Windows 7 Ultimate x64 bits
No external monitors. No conflicting software.
Latest BIOS and drivers.
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548 Posts

09-10-2009

USA

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Re: Battery Life Decrease In Windows 7

2010-01-02, 22:52 PM

 


wrote:

 

 

What I cannot understan is why we have to stick to Lenovo drivers. Why is not possible to download a switchable graphics driver from anywhere else in the world. Is there a Microsoft driver working fine for that purpouse? Intel? Ati? Anything at all?


 

You have to use Lenovo drivers because the switchable implementation is unique to Lenovo. If you disabled one or the other chips in Bios, then you should be able to use standard drivers for the working chip, but with swichable enabled, you need the Lenovo (well, ATI actually as modivfied by or for Lenovo) driver.

 

T61p, T400
formerly x23, x40
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2 Posts

01-03-2010

>Internet

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Re: Battery Life Decrease In Windows 7

2010-01-03, 7:59 AM

I also experience the same battery decrease problem since uppgrading to Win7 Home (from Win7 Beta). Win7 used to offer better battery life under Beta, I used to get ~6h with a 6-cell (same figures as with XP or Vista) when Win7 Beta was installed.

Since uppgrading to Win 7 Home Premium after it was released I'm getting 3,5-4h at best and I can now hear the fan spinning at low-intensive work (like writing this & light browsing) and I also note an increased heat-output from the fans. With Win7 Beta (XP and Vista), my laptop never even got warm at light duty, not anything I noted anyway, when running on the integrated Intel-graphics.

 

Also, when installing the switchable graphics driver my battery life get even worse and it seemed to consume even more when running on the integrated Intel graphics, than when using the dedicated Ati-graphics. Fans spinning all the time like a cheap gamer oriented Acer...

 

This is totally unacceptable, someone (Microsoft, Intel or Lenovo)  needs to fix what is broken. I'm getting reports that other notebook owners with other brands experience the same problem since uppgrading to Win7. 

 

My Thinkpad is a T400 2765-D4G with LED and switchable graphics and a Intel 80Gb G2 SSD (the latter should lower power consumption even more).

 

As of now, the best battery life I manage to get is with the included Intel chipset drivers that comes with the Win7 installation and then I'm getting almost 4h (12-14 Watt at idle). This really s*** and is not what I expected when I bought this premium notebook and upgraded it with the latest Microsoft OS that boasted better batterylife.

 

Just fix it already.

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45 Posts

04-28-2009

Boston, MA

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Re: Battery Life Decrease In Windows 7

2010-01-03, 18:58 PM

I also notice the fan spinning just about all the time in Win7.  What I used to notice, in Vista, was that the fan was virtually never on when running on battery power.  I miss this, as now my T400 reminds me of my roommate's broken old 4-year-old Gateway laptop that runs the fan while asleep.

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40 Posts

08-28-2009

Germany

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Re: Battery Life Decrease In Windows 7

2010-01-05, 12:20 PM

I noticed the prolem with the fan, too.

 

You can temporarily switch it off by re-enabling the current power plan, but that doesn't stick.

 

I'm thinking it may have something to do with bot graphics chips being used. The TP uses more power and produces probably some more heat, although the additional heat of the X4500MHD should be neglectible...

 

 

I'm pretty pis... right now. This has been a problem from day one and they don't seem to care.

At least some comment on why this takes so long would be appropriate by now...!

Thinkpad T500 2082-7SG
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7 Posts

01-23-2009

The Holy Empire of Britannia

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Re: Battery Life Decrease In Windows 7

2010-01-08, 11:28 AM

I had this problem as well. I ended up also disabling Switchable Graphics in the BIOS and setting it to Integrated Graphics. I don't use the Discrete Graphics all that much, but having to reboot to get it back is less convenient than Switchable Graphics. At least Win7 boots ten times faster than Vista. However I still use about ~1 W more at idle than I did in Vista with completely identical settings in the Power Manager. I lost about 1/2 to 1 hour from my battery life. I thought Win7 was supposed to be more energy efficient than Vista, at least MS was hyping it that way. This really needs to be fixed.

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45 Posts

04-28-2009

Boston, MA

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Re: Battery Life Decrease In Windows 7

2010-01-08, 22:30 PM

This is exactly how I've been running my laptop since upgrading to Windows 7.  I very rarely would switch to the discrete graphics, so I just switched the BIOS to integrated.  I also don't use Power Manager.

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