Re: [ACPI-sppt] Samsung X10 with modified DSDT and Memory extension (CPU speed problem)

Stefan Behnel wrote:
> 
> 
> I heard that before. Even something as simple as a different memory 
> config seems to make a difference to the DSDT, so I'm kinda wondering if 
> it actually makes sens to keep the corrected DSDTs on the ACPI page 
> instead of patches...
> 
> 
> I guess, the easiest thing you can do is: make a diff between the 
> original DSDT by Michael Arlt and his corrected one and apply it to your 
> own one.
> 
> Or, if you don't have his original, just make a diff between your 
> original DSDT and his new one and then take out the parts that don't 
> seem to be meaningful or corrective.
> 
> Anyway, you'll have to work on your DSDT by hand.

Okay, thank you very much! This worked okay. I now have the battery 
status working which proved very useful since the US has different power 
supply and I had to use my batteries here. =;-)

However, one important feature does not work: The CPU speed control. 
When I boot the machine on battery the CPU is recognized as having 600 
Mhz, but it seems to work with 1300 Mhz. The values in /proc/acpi are 
not different from booting connected to power.

/proc/acpi # cat processor/CPU0/performance
state count:             5
active state:            P0
states:
    *P0:                  1300 MHz, 22000 mW, 100 uS
     P1:                  1200 MHz, 20000 mW, 100 uS
     P2:                  1000 MHz, 15000 mW, 100 uS
     P3:                  800 MHz, 10500 mW, 100 uS
     P4:                  600 MHz, 6000 mW, 100 uS

When I try to change the state by echoing values to proc/acpi nothing 
changes. (Connected or not connected to power) The same applies to 
throttling.

This is puzzling since the page by Michael Arlt that describes his 
experiences with the modified DSDT says that he can influence the CPU.

What can I do about this?

Thanks and greetings

	Stefan



-- 
Stefan Müller

Universität Bremen/Fachbereich 10      Tel: (+49) (+421) 218-8601
Postfach 33 04 40
D-28334 Bremen

http://www.dfki.de/~stefan/





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