Re: ASUS M6800N: processor has only C1

Thomas Renninger
2004-03-04T12:00:15Z

Luca Capello wrote:

>
> gismo:/proc/acpi/processor/CPU1# cat power
> active state: C47514253
> default state: C26214683
> bus master activity: 00010000
> states:
> C1: promotion[--] demotion[C23360] latency[000]
> usage[134972534]
> C2: <not supported>
> C3: <not supported>
>
> gismo:/proc/acpi/processor/CPU1# cat throttling
> Could not determine current throttling state.
> =====
>
> I already hacked my DSDT (attached in .dsl format), but the last tests
> I made on
> 2.6.3 + ACPI 20040220 and 'ACPI DSDT in initrd' gave the same error
> (attached
> 'dmesg' output).
>
> Possible solutions?
>
I had the same problem.
Your machine supports the C4 state.
Change the P_BLK in your DSDT to 0x06

e.g.:
Processor (\_PR.CPU0, 0x01, 0x00001010, 0x07)
to:
Processor (\_PR.CPU0, 0x01, 0x00001010, 0x06)

or use the patch from Pavel, posted on the 28.02.2004, 17:10.

Unfortunately this won't enable the C4 state if you have one.
What do mainters say about supporting Cn processor states in the future?