Configure hotkeys on Thinkpad X240

Glats

Glats

Hi!
if i understand correctly you can configure hotkeys (volume, brightness, etc) through devd(8) but i couldn't made it work.

Here is what i configured:
/etc/devd/x240.conf
Code: 
notify 10 {
    match "system"      "ACPI";
    match "subsystem"   "IBM";
    action "/usr/local/sbin/acpi_oem_exec.sh $notify ibm";
};
/usr/local/sbin/acpi_oem_exec.sh
Bash: 
#!/bin/sh
if [ "$1" = "" -o "$2" = "" ]
then
    echo "usage: $0 notify oem_name"
    exit 1
fi
NOTIFY=`echo $1`
LOGGER="logger"
OEM=$2
DISPLAY_PIPE=/tmp/acpi_${OEM}_display
VOL_LEVEL=/tmp/vol_${OEM}
if [ ! -f $VOL_LEVEL ]
then
    VOL="`mixer -s vol | awk -F' ' '{split($2,a,":"); print (a[1]+a[2])/2}'`"
    echo $VOL > $VOL_LEVEL
fi
MIC_LEVEL=/tmp/mic_${OEM}
if [ ! -f $MIC_LEVEL ]
then
    VOL="`mixer -s mic | awk -F' ' '{split($2,a,":"); print (a[1]+a[2])/2}'`"
    echo $VOL > $MIC_LEVEL
fi
case ${NOTIFY} in
    0x01)
        MUTE=`sysctl -n dev.acpi_${OEM}.0.mute`
        if [ "$MUTE" = "1" ]
        then
            cat $VOL_LEVEL | xargs mixer vol
            sysctl dev.acpi_${OEM}.0.mute=0
            MESSAGE="vol unmute"
        else
            mixer vol 0
            sysctl dev.acpi_${OEM}.0.mute=1
            MESSAGE="vol mute"
        fi
        ;;
    0x02)
        mixer vol -5
        MESSAGE="vol down"
        ;;
    0x03)
        mixer vol +5
        MESSAGE="vol up"
        ;;
    0x04)
        LED=`sysctl -n dev.acpi_${OEM}.0.mic_led`
        if [ "$LED" = "1" ]
        then
            cat $MIC_LEVEL | xargs mixer mic
            sysctl dev.acpi_${OEM}.0.mic_led=0
            MESSAGE="mic unmute"
        else
            mixer mic 0
            sysctl dev.acpi_${OEM}.0.mic_led=1
            MESSAGE="mic mute"
        fi
        ;;
    0x05)
        BRI=`sysctl -n hw.acpi.video.lcd0.brightness`
        R=`echo $BRI-5 | bc`
        sysctl hw.acpi.video.lcd0.brightness=$R
        MESSAGE="brightness up"
    ;;
    0x06)
        BRI=`sysctl -n hw.acpi.video.lcd0.brightness`
        R=`echo $BRI+5 | bc`
        sysctl hw.acpi.video.lcd0.brightness=$R
        MESSAGE="brightness down"
        ;;
    0x08)
        WLAN=`sysctl -n dev.acpi_${OEM}.0.wlan`
        if [ "$WLAN" = "1" ]
        then
            sysctl dev.acpi_${OEM}.0.wlan=0
            MESSAGE="wlan down"
        else
            sysctl dev.acpi_${OEM}.0.wlan=1
            MESSAGE="wlan up"
        fi
        ;;
esac
${LOGGER} ${MESSAGE}
if [ -p ${DISPLAY_PIPE} ]
then
    ${ECHO} ${MESSAGE} >> ${DISPLAY_PIPE} &
fi
exit 0

Thanks!
 
RTFM test(1) Sorry, bulls*t quick shot, I did not have my 2nd coffee yet.
EDIT: The acpi-ibm is very outdated. It works for old IBM ThinkPads, but not for the newer Lenovo ones. You can disable most part of the script and just write out the value of $notify for each special key you press. Then adjust the script.
 
Is it necessary to use devd? My T430s has working brightness (I think it only works after loading i915kms module), volume up&down, changing sound from internal speakers to headphones. Mute works but only when internal speakers are used (headphones will no be muted even mute LED is lit).
Did not try to disable WLAN with hotkeys (but suspend with hotkeys works).
 
JohnnySorocil said:
Is it necessary to use devd? My T430s has working brightness (I think it only works after loading i915kms module), volume up&down, changing sound from internal speakers to headphones. Mute works but only when internal speakers are used (headphones will no be muted even mute LED is lit).
Did not try to disable WLAN with hotkeys (but suspend with hotkeys works).
Click to expand...
IMHO yes, you need devd(8) for this. E.g. I have a T450s and only sound vol +/- & mute (w/ + w/o headphones) works out of the box via the function keys. Don't remember if mic, WLAN, camera on/off works. With (nearly?) every new model, some scancodes change... :(
Off-topic: since you guys have ThinkPads, you may want to become victims to test my Howto hibernate. I'd like to have more feedback if this is a good workaround to hibernation from OS. You can use your swap partition & swap to a ZVOL instead.
 
  • Thanks
Reactions: hph
Elazar said:
Hey,
Did you load acpi_ibm(4)? Did you restart devd() after editing the config file?
Did you chmod() the shell script to make it executable?
Click to expand...
Indeed!

mjollnir said:
RTFM test(1) Sorry, bulls*t quick shot, I did not have my 2nd coffee yet.
EDIT: The acpi-ibm is very outdated. It works for old IBM ThinkPads, but not for the newer Lenovo ones. You can disable most part of the script and just write out the value of $notify for each special key you press. Then adjust the script.
Click to expand...

How can debug it? To see what specials work in my laptop.
Can you give an example?
 
do you all mean to run the script directly? but how do I know if 0x01 is Fn+F1 for example.
 
Glats said:
do you all mean to run the script directly? but how do I know if 0x01 is Fn+F1 for example.
Click to expand...
Because noone else could have pressed that key? The objective is that you write a key logger. You press a key, your script tells "42", you press the next key, ...
Yesterday I cp /usr/local/share/examples/intel-backlight/acpi-video-intel-backlight.conf /usr/local/etc/devd/ and
service devd restart, now I have brightness +/- and not only sound +/-
 
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