Acpi events aren't recognized at startup

Hi forum!
Since 3 weeks my acpi events aren't recognized anymore after startup, no apci_listen and no event-handler-output. I've got to manually type "systemctl restart acpid" to get them working again. What could be the problem? Journallog: http://pastebin.com/5f03T2wh
Regards,
thurse93
Last edited by thurse93 (2014-03-21 12:50:39)

We might have the same issue, though restarting acpid doesn't change anything for me. I've tried different kernels and tried to find out if any package was updated when it started happening, but couldn't find anything. I've opened a bug report for the kernel here:
https://bugzilla.kernel.org/show_bug.cgi?id=71221
That bug has the following effects on my computer:
- Backlight keys not working
- Wireless key not working
- Doesn't detect the change when plugging out the battery cord, KDE/upower can't see that the computer is on battery
- CPU frequency isn't lowered automatically anymore when my PC gets too hot, and it just shuts down due to overheating

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How to interpret acpi events?

Hi.
I installed acpid and with a little tweaking of the handler.sh I got the basic actions to be recognized. Now, how can i get a list, or something, of all avalible events and thay're explanation. Whan i monitor the /var/log/messages.log i often get 'ACPI group/action undefined: processor / CPU0' or '... termal_zone / TZ1'. How can i find out what those events meen, and how i can use them.
edit: BTW, i tested the fn key and it seems to work with a lot of keys, including the one for seting up the brightness of the monitor. Does that have something to do with acpid?
Last edited by KRTac (2008-07-17 00:03:19)

I don't know that there is any definitive source where you can look up the ACPI events, their parameters and what they mean. Perhaps the ACPI specification (http://www.acpi.info/spec.htm) might have some info, but its 600+ pages of very boring reading. Also note that different manufacturers will use different events. When I moved from a Dell to a ThinkPad I had to modify my ACPI scripts to change names of a number of events and parameters.
Probably the best you could do is log every ACPI event, run tail -f on the log file and put the laptop through its paces, noting which events correspond to which actions. Try things like opening/shutting the lid (if its a laptop), press various Fn buttons, unplug and plug in the AC cord, run the battery down to zero, run the temperature up as high as you can. This is basically what I did when I first set up my custom ACPI scripts.
Another thing you should do is look at other peoples ACPI scripts. That will give you ideas about how to use ACPI events. Look up your laptop on http://www.linux-laptop.net/ and scan through the configs to see if anyone set up ACPI scripts.
Finally, the Fn keys may or may not have to do with ACPI. You can check this by logging ACPI events. My Thinkpad sends an event for every Fn combination. However, some combos have an action hard-wired so that ACPI is not needed. For example, the monitor brightness probably does not have to do with ACPI.
Good luck.

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Kernel doesn't log ACPI events: ACPI module or Bios corruptions

Well, this is very strange and i dunno where to look at to solve this:
My new NP530U3C (Samusung ultrabook)is running Arch and i'm currently using acpid to trigger the acpi events couse i have no DE (fluxbox).
I can't understand the way my kernel and acpid log the LID event:
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Oct 6 20:06:46 localhost kernel: [ 2.105259] ACPI: Lid Switch [LID0]
Oct 6 20:44:31 localhost kernel: [ 2.111136] ACPI: Lid Switch [LID0]
Oct 6 23:03:18 localhost kernel: [ 2.111244] ACPI: Lid Switch [LID0]
Oct 6 23:17:14 localhost kernel: [ 2.088524] ACPI: Lid Switch [LID0]
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Oct 6 20:44:31 localhost kernel: [ 2.111136] ACPI: Lid Switch [LID0]
Oct 6 20:45:29 localhost logger: LID closed
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Oct 6 20:53:58 localhost logger: LID closed
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Oct 6 23:00:16 localhost logger: LID opened
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Oct 6 23:27:18 localhost logger: LID closed
Oct 6 23:27:28 localhost logger: LID opened
Oct 6 23:33:40 localhost logger: LID closed
Oct 6 23:33:48 localhost logger: LID opened
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*EDIT <-----
I can summarize it is a corruption of the Bios/ACPI module that affect this laptop after a certain suspentions circle (I mean not every first suspentions).
I would like to debug in a better way but i have no instruments to investigate:
If someone can point me to a way to debug this stuff like Bios corruptions and/or Kernel module failure...
Any advide is appreciated
Last edited by j0lly (2012-10-29 14:29:44)

well, is a samsung ultrabook! i'm doing some m ore tests and still 10 sec delayed!
a note:
when the kernel log the LID state i can suspend instantly after i really close the LID.
after a reboot, and halt/start thigs doesn't changes....
The kernel logger resume after some reboots or *resetting* (using a needle to click a button above the laptop close to the battery) the laptop <-- this method was whrote somewhere and i tried it, and solved sometinms the issue for 2/3 days.
is starnge because it appears without any regularity, but i'm not so pro and is difficult for me to figure out what can trigger the event!
EDIT
Oct 7 00:21:58 localhost kernel: [ 686.653890] psmouse serio1: Touchpad at isa0060/serio1/input0 lost sync at byte 6
Oct 7 00:21:59 localhost kernel: [ 686.668774] psmouse serio1: Touchpad at isa0060/serio1/input0 - driver resynced.
dunno if is important, but after a resume from suspend, i got this messege. i thought it was only after it (like a little error in the resume hooks) but no i'm noticing it in the messages.log every how
Last edited by j0lly (2012-10-06 22:24:03)

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Hi there,
on my Thinkpad X200T I have some buttons for rotating the screen when I am in tablett mode. My problem is that these keys do not produce acpi events, but I get some keycodes (via xev). I know there is a way to fake keys from acpi events - but is there another way around? I want to get acpi events when i press these buttons. All the other buttons create acpi events, just these 3 buttons dont. Anyone know how to do?
Btw: I use the kernel module thinkpad_acpi.
I would also be happy if anyone comes up with another solution, i mean somehow this should be working...
Thanks!
Last edited by klump (2012-03-19 19:50:52)

Hi there,
on my Thinkpad X200T I have some buttons for rotating the screen when I am in tablett mode. My problem is that these keys do not produce acpi events, but I get some keycodes (via xev). I know there is a way to fake keys from acpi events - but is there another way around? I want to get acpi events when i press these buttons. All the other buttons create acpi events, just these 3 buttons dont. Anyone know how to do?
Btw: I use the kernel module thinkpad_acpi.
I would also be happy if anyone comes up with another solution, i mean somehow this should be working...
Thanks!
Last edited by klump (2012-03-19 19:50:52)

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ACPI has been working fine on my Acer Travelmate for a long time - but suddenly it broke. I can't start acpid deamon - I get the following error:
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Hello, I have the same problem, but I think (not confirmed yet) that the solution of putting acpid before hald might work... (i can't restart this notebook right now...)
Just posting this because i used "lsof" to find what process uses the /proc/acpi/event file... so it would help you to find why you can't access it even when acpid starts before hald....
21:32:58°nanex@root:/home/noice$ /etc/rc.d/acpid restart
:: Stopping acpid [FAIL]
:: Starting acpid [BUSY]
acpid: can't open /proc/acpi/event: Device or resource busy
[FAIL]
21:33:00°nanex@root:/home/noice$ /etc/rc.d/acpid stop
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cat: /proc/acpi/event: Device or resource busy
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lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/noice/.gvfs
Output information may be incomplete.
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
hald-addo 4193 hal 4r REG 0,3 0 4026531932 /proc/acpi/event
21:32:58°nanex@root:/home/noice$ /etc/rc.d/acpid restart
:: Stopping acpid [FAIL]
:: Starting acpid [BUSY] acpid: can't open /proc/acpi/event: Device or resource busy
[FAIL]
21:33:00°nanex@root:/home/noice$ /etc/rc.d/acpid stop
:: Stopping acpid [FAIL]
21:37:27°nanex@root:/home/noice$ cat /proc/acpi/event
cat: /proc/acpi/event: Device or resource busy
21:37:34°nanex@root:/home/noice$ lsof /proc/acpi/event
lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/noice/.gvfs
Output information may be incomplete.
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
hald-addo 4193 hal 4r REG 0,3 0 4026531932 /proc/acpi/event

Button/lid (no /proc/acpi/events?)

I must be missing something obvious but it seem that when I close my laptop's lid, the button/lid section of handler.sh is not triggered. I have acpi running fine, it even seems that other events are successfully triggered (like ac_adapter), but not button/lid. Essentially I'm trying to run 'powersave -u' when I close the lid.
Help please?

Thanks for the reply. It seems like this might be part of a bigger problem though, because I don't seem to have a /proc/acpi/event. What I have in /proc/acpi are ac_adapter, battery, button, embedded_controller, fan, power_resource, processor, thermal_zone, and video.
Also, when I start my computer, Arch says that the acpi daemon started successfully. But if I stop it (also successfully) and then try to start it again, it always fails with "acpid: can't open /proc/acpi/event: Device or resource busy".
Here's some sample output from /var/log/acpid which doesn't seem to be very useful. The exiting lines are probably me manually stopping acpid, although it never starts up again unless I reboot..
[Fri Feb 17 10:59:02 2006] starting up
[Fri Feb 17 10:59:02 2006] 2 rules loaded
[Fri Feb 17 10:59:07 2006] client connected from 2788[82:82]
[Fri Feb 17 10:59:07 2006] 1 client rule loaded
[Fri Feb 17 10:59:39 2006] exiting
[Fri Feb 17 11:01:34 2006] starting up
[Fri Feb 17 11:01:34 2006] 2 rules loaded
[Fri Feb 17 11:01:39 2006] client connected from 2729[82:82]
[Fri Feb 17 11:01:39 2006] 1 client rule loaded
[Fri Feb 17 11:02:12 2006] received event "thermal_zone C176 00000081 00000000"
[Fri Feb 17 11:02:12 2006] notifying client 2729[82:82]
[Fri Feb 17 11:02:12 2006] executing action "/etc/acpi/handler.sh thermal_zone C176 00000081 00000000"
[Fri Feb 17 11:02:12 2006] BEGIN HANDLER MESSAGES
cat: /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq: No such file or directory
cat: /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq: No such file or directory
[Fri Feb 17 11:02:12 2006] END HANDLER MESSAGES
[Fri Feb 17 11:02:12 2006] action exited with status 0
[Fri Feb 17 11:02:12 2006] executing action "/etc/acpi/handler.sh thermal_zone C176 00000081 00000000"
[Fri Feb 17 11:02:12 2006] BEGIN HANDLER MESSAGES
cat: /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq: No such file or directory
cat: /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq: No such file or directory
[Fri Feb 17 11:02:12 2006] END HANDLER MESSAGES
[Fri Feb 17 11:02:12 2006] action exited with status 0
[Fri Feb 17 11:02:12 2006] completed event "thermal_zone C176 00000081 00000000"
[Fri Feb 17 11:08:30 2006] exiting
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Hi,
I have a Dell Inspiron 1150. I'm struggling to get it to recognize acpi events such as the lid closing or the power button. The acpi modules I have loaded are ac, battery, fan, button. To monitor acpi events I typed
cat /proc/acpi/event
in a terminal. Is there some module I'm missing? Other acpi functionality seems to be working - I can throttle the cpu, I can get information about the state of the battery and it can detect when the ac adaptor is plugged in.

goldfish2 wrote:You wont see anything happening in /proc/acpi/events using cat, if it works or not.
I beg to differ.
An example output from my (working) desktop:
$ su
Password:
[root@newcastle philip]# /etc/rc.d/acpid stop
:: Stopping acpid [DONE]
[root@newcastle philip]# cat /proc/acpi/event
button/power PWRF 00000080 00000001
button/power PWRF 00000080 00000002
button/power PWRF 00000080 00000003
button/power PWRF 00000080 00000004
[root@newcastle philip]#
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Acpi events

Hello, i have a thinkpad laptop
all of my /etc/systemd/logind.conf lines are commented out.
the ACPI events my laptop generates are still handled by something, i.e when i close the lid, the screen goes off, power button does what it should, etc
I read that the logind.conf file is responsible for the actions that will be run by systemd when certain acpi events occur. so:
1. what triggers these actions even though my logind.conf is empty? does systemd have some defaults?
2. how can i debug all the acpi events that occur?
TY!

orschiro wrote:Tested with xev.
Test with something that listens to *ACPI* events
You'll need to check what systemd is doing with ACPI these days - it used to be simply /etc/acpi/handler.sh

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Acpi events aren't recognized at startup

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