Freeze due to performance_cx_lowest=LOW

[Alexander Leidinger]

Quoting Yar Tikhiy <yar at comp.chem.msu.su> (Sun, 28 May 2006 18:20:39 +0400):

> Hi,
> 
> A while ago I installed CURRENT on my new home PC and noticed that
> the system would hang hard at the boot time soon after setting
> cx_lowest to C3 according to the LOW setting in /etc/defaults/rc.conf.
> The last message on the console was each time: Mounting NFS file
> systems:.  Setting performance_cx_lowest to HIGH made the problem
> go away.
> 
> Now I've just tried again to return performance_cx_lowest to its
> modern default setting in a fresh CURRENT and found that the bug
> is still there.  Is it due to my ACPI HW being broken?  I'll be
> glad to show relevant debug output from my ACPI if told how to get
> it.  Thanks.

AOL...

I use performance_cx_lowest=C2 as a workaround.

% sysctl hw.acpi.cpu
hw.acpi.cpu.cx_supported: C1/0 C2/90 C3/900
hw.acpi.cpu.cx_lowest: C2
hw.acpi.cpu.cx_usage: 3.73% 96.26% 0.00%


Bye,
Alexander.

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