kacpid takes 99% of CPU when laptop lid is closed

kacpid takes 99% of CPU when laptop lid is closed

[Antille Julien]

I can confirm that the ACPI bug I described 
here :http://marc.theaimsgroup.com/?l=linux-kernel&m=108452002205471&w=2
is still present in the recent 2.6.7 kernel.

However, the process taking all the CPU is kacpid now (was keventd in previous 
kernels)

I hope that helps.

Please add me to CC.

Julien Antille

Re: kacpid takes 99% of CPU when laptop lid is closed

[Bjoern Schmidt]

Antille Julien wrote:
> I can confirm that the ACPI bug I described 
> here :http://marc.theaimsgroup.com/?l=linux-kernel&m=108452002205471&w=2
> is still present in the recent 2.6.7 kernel.
> 
> However, the process taking all the CPU is kacpid now (was keventd in previous 
> kernels)

I have the same problem if i unplug ac on a compaq armada 7400.

-- 
Greetings
Bjoern Schmidt

Re: kacpid takes 99% of CPU when laptop lid is closed

[Alexey N. Spiridonov]

Hello,

I have exactly the same laptop as Antille and exactly the same problem.

I did some stuff to diagnose it. I have the output of oprofile, my startup messages with ACPI debug messages enabled, and the messages when the lid is closed for about 2 seconds.
The debug configuration is: all components, and level VERBOSITY1.

They're all available here:
  http://www.math.princeton.edu/~aspirido/gpe-bug/
Watch out -- the two debug logs, uncompressed, are  pretty big (~20mb).

Here's the DSDT for the laptop:
http://acpi.sourceforge.net/dsdt/tables/Dell/Inspiron_2650/Dell-Inspiron_2650-A05-original.asl.gz

I know next to nothing about ACPI, but I hope I can help debug it, if it hasn't been fixed.
Otherwise, I'd like to help test the patch.

Best,

Alexey