kacpid consumes 100% cpu

kacpid consumes 100% cpu

[Rustom Mody]

I had an old P4 (1.2 GHz) box that was running debian etch fine.
Recently upgraded the motherboard to a duo core on a 945G chipset board.

Now if I start windows-XP and put it in standby mode and then restart
linux, linux becomes unusable with kacpid taking 100% cpu.  Starting
linux with kernel option acpi=off works and sometimes if it is
restarted without the option it keeps working and sometimes not.

Evidently windows standby leaves some state in the BIOS that linux
cant clean up/detect.  What??

The output of uname -vr is as follows:
2.6.22-2-686 #1 SMP Fri Aug 31 00:24:01 UTC 2007

Thanks

Rustom  Mody

Re: kacpid consumes 100% cpu

[Alexey Starikovskiy]

Rustom Mody wrote:
> I had an old P4 (1.2 GHz) box that was running debian etch fine.
> Recently upgraded the motherboard to a duo core on a 945G chipset board.
> 
> Now if I start windows-XP and put it in standby mode and then restart
> linux, linux becomes unusable with kacpid taking 100% cpu.  Starting
> linux with kernel option acpi=off works and sometimes if it is
> restarted without the option it keeps working and sometimes not.
acpidump output might give some hints. Please open bug at bugzilla.kernel.org against ACPI
and put all the information there.
> 
> Evidently windows standby leaves some state in the BIOS that linux
> cant clean up/detect.  What??
Could you try to use "magic SysRq + t" to see what threads are doing?
> 
> The output of uname -vr is as follows:
> 2.6.22-2-686 #1 SMP Fri Aug 31 00:24:01 UTC 2007
> 
> Thanks
> 
> Rustom  Mody
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