Re: ASUS M6800N: processor has only C1

Herman Sheremetyev
2004-03-20T17:27:36Z

Hi Luca,

With a little DSDT tweak I get the following output:

$ cat /proc/acpi/processor/CPU1/*
processor id: 0
acpi id: 1
bus mastering control: yes
power management: yes
throttling control: yes
limit interface: yes
active limit: P0:T0
user limit: P0:T0
thermal limit: P0:T0
active state: C2
default state: C1
bus master activity: 00000000
states:
C1: promotion[C2] demotion[--] latency[000]
usage[00024090]
*C2: promotion[--] demotion[C1] latency[099]
usage[00991232]
C3: <not supported>
state count: 8
active state: T0
states:
*T0: 00%
T1: 12%
T2: 25%
T3: 37%
T4: 50%
T5: 62%
T6: 75%
T7: 87%

The fix requires simply changing one value in the DSDT from:

Processor (CPU1, 0x01, 0x00000410, 0x07)

to:

Processor (CPU1, 0x01, 0x00000410, 0x06)

You can find more details on the forum I started dedicated to Linux on
the M6N series laptops:

http://mrhammy2.ath.cx:81/forum/viewforum.php?f=1

-Herman

On Sat, 2004-03-20 at 05:29, Luca Capello wrote:
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> Hello,
>
> I tried kernel 2.6.5-rc1 with a new BIOS 0206A, but still the same problem. It
> seems that Bruno's patches (which at least let me have C1 & C2) haven't been
> applied yet.
>
> On the other hand, without Bruno's patches I get:
> =====
> gismo:~# cat /proc/acpi/processor/CPU1/*
> processor id: 0
> acpi id: 1
> bus mastering control: yes
> power management: no
> throttling control: no
> limit interface: no
> <not supported>
> active state: C1
> default state: C1
> bus master activity: 00000000
> states:
> *C1: promotion[--] demotion[--] latency[000] usage[00000000]
> C2: <not supported>
> C3: <not supported>
> <not supported>
> gismo:~#
> =====
>
> This output is the same if I use the original DSDT or a modified one to have
> battery support.
>
> Question: with Bruno's patches, I never got C3 (neither the 'C3 <not supported>'
> message), so, could it be that my laptop doesn't support C3 but C4?
>
> Attached the new DSDT from BIOS 0206A.
>
> Thx, bye,
> Gismo / Luca
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