Package: acpi-support
Version: 0.95-2
Severity: important
Hi everyone!
I just figured out, that acpi_fakekey is not working for my devices.
(An Asus M2N laptop and a HP k704.de workstation)
An strace of acpi_fakekey gave me:
| # strace acpi_fakekey 16
| execve("/usr/bin/acpi_fakekey", ["acpi_fakekey", "16"], [/* 15 vars */]) = 0
[...]
| open("/dev/input/event0", O_RDWR) = 3
| ioctl(3, 0x80404521, 0xbfd2d4e8) = 64
| write(3, "i\206\4\10\364\337\362\267\1\0\20\0\1\0\0\0", 16) = 16
| write(3, "i\206\4\10\364\337\362\267\1\0\20\0\0\0\0\0", 16) = 16
| exit_group(0) = ?
Having a look at my event devices gave me (for my M2N):
# head -n 1 /sys/class/input/input*/name
| ==> /sys/class/input/input0/name <==
| Power Button (FF)
|
| ==> /sys/class/input/input1/name <==
| Sleep Button (CM)
|
| ==> /sys/class/input/input2/name <==
| Lid Switch
|
| ==> /sys/class/input/input3/name <==
| AT Translated Set 2 keyboard
|
| ==> /sys/class/input/input4/name <==
| PC Speaker
|
| ==> /sys/class/input/input5/name <==
| SynPS/2 Synaptics TouchPad
That means that it is definitely using the event-device of the ACPI power
button for my machines (both), but the default xorg.conf does only handle the
standard keyboard. As I guess acpi_fakekey wants to inject the key codes there,
though the man page only mentions the "correct input FIFO in /dev/input/eventx".
After modding acpi_fakekey.c a bit to see how it selects the event-device:
| # cat acpi_fakekey_mod.c
[...]
| int find_keyboard() {
| int i, j;
| int fd;
| char filename[32];
| char key_bitmask[(KEY_MAX + 7) / 8];
| unsigned int u;
| int first=1;
|
| printf("BTN_MISC is %d bits (=%d bytes).\n", BTN_MISC, BTN_MISC/8);
| for (i=0; i<32; i++) {
| snprintf(filename,sizeof(filename), "/dev/input/event%d", i);
|
| fd = open(filename, O_RDWR);
| ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(key_bitmask)),
key_bitmask);
|
| for (j = 0; j < BTN_MISC; j++) {
| if (TestBit(j, key_bitmask))
| break;
| }
|
| if (j < BTN_MISC) {
| printf("found event%d with : \n",i );
| for(j=0; j<sizeof(key_bitmask); ++j) {
| u=(key_bitmask[j]&0xff);
| printf(" %02x", u);
| if((j%16) == 7) printf(" "); if((j%16) == 15)
printf("\n");
| }
| if(first) { first=0; printf(" -> would select this
one <-\n"); }
| printf("\n");
| }
| close (fd);
| }
| return 0;
| }
[...]
I got theese "key_bitmasks":
| # gcc -o acpi_fakekey_mod acpi_fakekey_mod.c && ./acpi_fakekey_mod
| BTN_MISC is 256 bits (=32 bytes).
| found event0 with : # POWERBTN
| 00 00 00 00 00 00 00 00 00 00 00 00 00 00 10 00
| 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
| 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
| 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
| -> would select this one <-
|
| found event1 with : # SLEEPBTN
| 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
| 00 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00
| 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
| 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|
| found event3 with : # ATKBD
| fe ff ff ff ff ff ff ff ff ff ef ff df ff ff fe
| 01 d0 40 f8 78 20 80 03 00 00 00 02 04 00 00 00
| 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
| 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Sureley all three devices have bits set below BTN_MISC.
By the way: I'm using 2.6.21.6 with config:
| [...]
| CONFIG_ACPI=y
| [...]
| CONFIG_ACPI_AC=y
| CONFIG_ACPI_BATTERY=y
| CONFIG_ACPI_BUTTON=y
| CONFIG_ACPI_VIDEO=y
| [...]
| CONFIG_INPUT=y
| CONFIG_INPUT_MOUSEDEV=y
| CONFIG_INPUT_MOUSEDEV_PSAUX=y
| CONFIG_INPUT_JOYDEV=y
| CONFIG_INPUT_EVDEV=y
| CONFIG_INPUT_KEYBOARD=y
| CONFIG_KEYBOARD_ATKBD=y
| CONFIG_INPUT_MOUSE=y
| CONFIG_MOUSE_PS2=y
| CONFIG_INPUT_JOYSTICK=y
| CONFIG_INPUT_MISC=y
| CONFIG_INPUT_PCSPKR=y
As a quick and dirty hack
| CONFIG_ACPI_BUTTON=m
solved the problem for me by reordering my devices, but I think it's not the
way to do it-
Cheers,
Ralf Miunske
-- System Information:
Debian Release: lenny/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: i386 (i686)
Kernel: Linux 2.6.21.6 (PREEMPT)
Locale: [EMAIL PROTECTED], [EMAIL PROTECTED] (charmap=ISO-8859-15)
Shell: /bin/sh linked to /bin/bash
Versions of packages acpi-support depends on:
ii acpid 1.0.4-7.1 Utilities for using ACPI power man
ii dmidecode 2.9-1 Dump Desktop Management Interface
ii finger 0.17-11 user information lookup program
ii hdparm 7.5-1 tune hard disk parameters for high
ii laptop-detect 0.12.1-0.1 attempt to detect a laptop
ii libc6 2.6-2 GNU C Library: Shared libraries
ii lsb-base 3.1-23.1 Linux Standard Base 3.1 init scrip
ii powermgmt-base 1.29 Common utils and configs for power
ii radeontool 1.5-5 utility to control ATI Radeon back
ii toshset 1.72-4 Access much of the Toshiba laptop
ii vbetool 0.7-1.1 run real-mode video BIOS code to a
ii xbase-clients 1:7.2.ds2-2 miscellaneous X clients
acpi-support recommends no packages.
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