Eduard Giménez Cerdà schrieb:
Hello,
I've two machines with the following configuration:
Processor: Intel Core Solo T1300 / Intel Celeron M 420
Mainboard: Asus N4L-VM DH with Intel 945GM Chipset with an AMI BIOS
(I suppose the drives and the memory are not important)
With the vanilla kernels 2.6.18 and 2.6.19 the
/proc/acpi/processor/CPU1/info file shows that there is no bus mastering
nor power management, and looking at /proc/acpi/processor/CPU1/power the
states accounting only shows the C1 state but without any data (0 or --
on all the values), although it shows that the maximum C-State is C8.
C8 is the maximum C-State supported by Linux.
Actually is could be, that nothing is broken. If the bios does not
export more than one C-State, than everything is (from the view of
linux) ok. If you want to find out, what C-States are exported by the
bios, decompile your DSDT (can be found under /proc/acpi/dsdt) with the
IASL compiler
(http://www.intel.com/technology/iapc/acpi/license2.htm), and search in
the decompiled version for _CST. More information about the _CST object
can be found in the ACPI-Specification (www.acpi.info)
Janosch
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