Why C3 state isn't entered?

Andrey Smirnov smir at delit.net
Wed Nov 17 12:15:06 PST 2004


Hello!

I've got Centrino notebook (specifically Asus M3700Np), and it doesn't 
seem to enter C3 sleep state in any case.
Sample output from 'sysctl hw.acpi.cpu' (while working at battery):

hw.acpi.cpu.cx_supported: C1/0 C2/1 C3/101
hw.acpi.cpu.cx_lowest: C3
hw.acpi.cpu.cx_usage: 0.00% 100.00% 0.00%

So C3 is supported, is allowed but isn't entered according to cx_usage. 
Why could it be so?

My system:
bash-2.05b$ uname -a
FreeBSD smira.mlab.cs.msu.su 6.0-CURRENT FreeBSD 6.0-CURRENT #1: Wed Oct 
13 13:50:01 MSD 2004     
root at smira.mlab.cs.msu.su:/usr/src/sys/i386/compile/smira.mobile  i386

acpidump -d -t output, bzipped:
http://images.delit.net/acpidump.asl.bz2

Thanks,
Andrey.



More information about the freebsd-acpi mailing list