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

[Florian Manschwetus]

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Nils Kanning wrote:
> On Tue, 2006-08-08 at 15:15 +0200, Florian Manschwetus wrote:
>> Nils Kanning 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. 
>>>
>>> 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
>>>
>> gentoo testing
>> 1.06 or 07 bios
>> fglrx 8.26.18 / 8.27
>> i reach the 4h with freqscaling and coredisabling with low voltage ati 
>> power state and dimmed display. (with wlan)
>> florian
> 
> how do you do the core disabling? is it a special kernel feature or a
> feature of the centrino_speedstep module?
> which kernel do you use?
> 
> nils
> 
2.6.17 thinkpad (/sys/devices/system/cpu/cpu1/online)
florian

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