Talk:Thinkpad-acpi

Problem with ACPI key event codes in OpenSuse 12.3

The below information was relevant on my Thinkpad Z60m running:

Linux 3.7.10-1.1-desktop
OpenSuse 12.3
KDE 4.10.00 "release 1"

I am currently running:

Linux 3.7.10-1.4-desktop
OpenSuse 12.3
KDE 4.10.2 "release 1"

and everything said below is still valid.

--Jespergoll (talk) 16:20, 9 May 2013 (CEST)

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I upgraded my Thinkpad Z60m to OpenSuse 12.3 shortly after its release on March 13th 2013 - and soon found that my ACPI key handling script (/usr/lib/acpid/thinkpad_handler) was broken.

Specifically, they key events reported by the ACPI driver were different from what they had been before the upgrade - and so the following information (in ../Documentation/laptops/thinkpad-acpi.txt) was no longer true on my system:

The driver will report HKEY events in the following format:

  ibm/hotkey HKEY 00000080 0000xxxx

Now, instead, the same HKEY events are generally reported in the following format:

button/xxxxx YYY 00000080 00000000 K

- where "xxxxx" is a lowercase name for either the key or the key function, and YYY is a shorter, capitalized version of the same. For example, Fn-F12 ("suspend to disk") is now being reported as:

button/suspend SUSP 00000080 00000000 K

I have found one exception to this general rule: Fn-F7 (the video switch button) is now being reported as:

video/switchmode VMOD 00000080 00000000 K

So I had to rewrite my key handler script (/usr/lib/acpid/thinkpad_handler), and even the event mask (found in /etc/acpi/events/thinkpad). My general key event mask now looks like this:

event=button/.*
action=/usr/lib/acpid/thinkpad_handler "%e"

To get the video switch script back in shape I created an additional event mask (/etc/acpi/events/video) with the following content:

event=video/switchmode
action=/usr/lib/acpid/video_handler "%e"

and moved the video switching routines to a new script: /usr/lib/acpid/video_handler.

Here is a list of the key events I have explored, and the event reports they now produce:

FnF1		    button/fnf1 		    FNF1 	  00000080 00000000 K

FnF2		    button/battery		  BAT	    00000080 00000000 K     1

FnF3		    button/screenlock	SCRNLCK	00000080 00000000 K     1

FnF4		    button/sleep		    SBTN	   00000080 00000000 K

FnF5		    button/wlan		     WLAN	   00000080 00000000 K

FnF6		    button/fnf6		     FNF6	   00000080 00000000 K

FnF7		    video/switchmode	 VMOD	   00000080 00000000 K

FnF8		    button/zoom		     ZOOM	   00000080 00000000 K     2

FnF9		    button/f24		      F24	    00000080 00000000 K

FnF10	    (not reported)

FnF11	    button/fnf11		    FF11	   00000080 00000000 K

FnF12	    button/suspend 		 SUSP	   00000080 00000000 K

ThinkVantage	button/prog1		    PROG1	  00000080 00000000 K

FnSpace   button/zoom		     ZOOM	   00000080 00000000 K     2

FOOTNOTES [Δ]

1. Fn-F2 and Fn-F3 seem to have become mixed up in the driver. On my machine, at least, Fn-F2 is "lock" and Fn-F3 is "battery".
2. Please note that Fn-F8 and Fn-Space now produce identical event reports - so there is no way to distinguish one from the other.