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Re: Power button with ACPI

Jeremy Brooks wrote:

Compiled 2.6.10 kernel and included the neccessary things as described in
the
acpi-howto, installed acpi and acpid. dmesg | grep ACPI says:



<snip>


So I think that my hardware is supported. In the BIOS APM is disabled and
ACPI
is enables enabled. I also found that the file /etc/acpi/events/powerbtn
exists. But when I press the power button nothing happens.




Are there any messages in /var/log/messages when you press the button?
Have you verified that acpid is actually running?
~$ ps -ef | grep acpi
root        16     3  0 Feb04 ?        00:00:00 [kacpid]
root      4884     1  0 Feb04 ?        00:00:00 /usr/sbin/acpid -c
/etc/acpi/events -s /var/run/acpid.socket





jumping in without remembering the start so excuse if I say stupid things:

sudo tail -f /var/log/acpid

and then pressing the button would show something like:
[Mon Feb 7 18:04:05 2005] received event "ibm/hotkey HKEY 00000080 00001003" 
[Mon Feb  7 18:04:05 2005] executing action "/etc/acpi/togglelcdlight.sh"
[Mon Feb  7 18:04:05 2005] BEGIN HANDLER MESSAGES
The radeon backlight looks on
[Mon Feb  7 18:04:05 2005] END HANDLER MESSAGES
[Mon Feb  7 18:04:05 2005] action exited with status 0
[Mon Feb 7 18:04:05 2005] completed event "ibm/hotkey HKEY 00000080 00001003" [Mon Feb 7 18:04:09 2005] received event "ibm/hotkey HKEY 00000080 00001003" 
[Mon Feb  7 18:04:09 2005] executing action "/etc/acpi/togglelcdlight.sh"
[Mon Feb  7 18:04:09 2005] BEGIN HANDLER MESSAGES
[Mon Feb  7 18:04:09 2005] END HANDLER MESSAGES
[Mon Feb  7 18:04:09 2005] action exited with status 0
[Mon Feb 7 18:04:09 2005] completed event "ibm/hotkey HKEY 00000080 00001003"
which in my case shows what happens when I use Fn+F3 to blank the screen (execturing the /etc/acpi/togglelcdlight.sh
Mind that if you use ibm_acpi you should really upgrade to the latest 0.10 just by copying it's ibm_acpi.c into your kernel tree and recompiling.
This is important since 0.8 and 0.9 had broken the module parameter loading. With 0.10 just have this in your /etc/modules 

ibm_acpi hotkey=enable,0xffff experimental=1

HTH,
Bob
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