[ltp] T60 power management (fglrx, aticonfig --set-powerstate )

[Florian Manschwetus]

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Sean Kelley wrote:
> Hi,
> 
> On 8/8/06, Nils Kanning <nils@kanning.de> wrote:
>> Hello,
>> i'm just configuring my new T60 and i'm not quite happy with the power
>> consumption in battery mode.
>>
>> Untill now i'm using cpufeq with the powersave governor and
>> laptop-mode.
>> I get about 2:30h battery life which is not very much compared to about
>> 4h in windows.
>>
>> I also tried "aticonfig --set-powerstate=1" (T60 with x1300). this
>> decreases the graphics performance but does not reduce the power
>> consumption in my case (latest fglrx version in debian unstable).
>>
>> Maybe someone knows some trick how to get ati's powersaving working or
>> has other ideas how to get more battery life?
>>
>> Furthermore it would be nice if other T60 users can post the output of:
>> cat /proc/acpi/battery/BAT0/state | grep present
>> when running on battery.
> 
> That will also depend on whether you have Wifi enabled and your
> backlight level.  With Wifi on and the backlight at the lowest level
> on battery I get:
> 
> present:  yes
> present rate:  15692mW
> present voltage: 12327mw
> 
> At mid-backlight the rate jumps to 17547mW or so
> 
> Sean
>>
>> With debian i get about 20000mW.
>> In windows its about 16000mW (measured with some shareware tool - don't
>> know the name)
>>
>> Thanks
>> Nils
>>
>> debian unstable
>> kernel 2.6.17 smp support
>> fglrx 8.24.8
>> bios 1.09
>>
>> -- 
>> The linux-thinkpad mailing list home page is at:
>> http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
>>
Notice to this
On core duo C4 is remapped to C3 when on bat
On ac C3 is C3 it is a windows problem because win ignores the C3 if C4 
is provided so the latency is increased all the time.
florian

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