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kokoko3k

Member

Registered: 2008-11-14

Posts: 2,398

acpi buttons -> strange characters in tty ?

Hi all, if i use backlight and volume keys of my laptop, strange characters appears in text tty when i use those acpi buttons.
For example, when touch the backglight controls, "^@" is written into the terminal, when i lower the volume it prints "[[26^"

acpid configuration:

$ cat /etc/acpi/events/anything 
# Pass all events to our one handler script
event=.*
action=/etc/acpi/handler.sh %e

$ cat /etc/acpi/handler.sh 
#!/bin/bash
# Default acpi script that takes an entry for all actions

case "$1" in
    button/power)
        case "$2" in
            PBTN|PWRF)
                logger 'PowerButton pressed'
                ;;
            *)
                logger "ACPI action undefined: $2"
                ;;
        esac
        ;;
    button/sleep)
        case "$2" in
            SLPB|SBTN)
                logger 'SleepButton pressed'
                ;;
            *)
                logger "ACPI action undefined: $2"
                ;;
        esac
        ;;
        video/brightnessup)
        bl_dev=/sys/class/backlight/intel_backlight
        step=100
        echo $(($(< $bl_dev/brightness) + $step)) >$bl_dev/brightness
        ;;

        video/brightnessdown)
        bl_dev=/sys/class/backlight/intel_backlight
        bnow=$(<$bl_dev/brightness)
        maxstep=2 #due vuol dire dimessa la luminosità attuale
        step=$(($bnow/$maxstep))
        echo $(( bnow - $step )) >$bl_dev/brightness
        ;;
    ac_adapter)
        case "$2" in
            AC|ACAD|ADP0)
                case "$4" in
                    00000000)
                        logger 'AC unpluged'
                        ;;
                    00000001)
                        logger 'AC pluged'
                        ;;
                esac
                ;;
            *)
                logger "ACPI action undefined: $2"
                ;;
        esac
        ;;
    battery)
        case "$2" in
            BAT0)
                case "$4" in
                    00000000)
                        logger 'Battery online'
                        ;;
                    00000001)
                        logger 'Battery offline'
                        ;;
                esac
                ;;
            CPU0)
                ;;
            *)  logger "ACPI action undefined: $2" ;;
        esac
        ;;
    button/lid)
        case "$3" in
            close)
                logger 'LID closed'
                ;;
            open)
                logger 'LID opened'
                ;;
            *)
                logger "ACPI action undefined: $3"
                ;;
    esac
    ;;
    *)
        logger "ACPI group/action undefined: $1 / $2"
        ;;
esac

# vim:set ts=4 sw=4 ft=sh et:

my kernel commandline

$ cat /proc/cmdline 
BOOT_IMAGE=../vmlinuz-linux root=/dev/sda5 acpi_backlight=vendor threadirqs quiet i915.semaphores=1 i915.i915_enable_rc6=7 i915.i915_enable_fbc=1 i915.lvds_downclock=1 drm.vblankoffdelay=1 pcie_aspm=force resume=/dev/sda2  rw initrd=../initramfs-linux.img

ideas? thanks!

EDIT: it has nothing to do with acpid, happens even if the daemon is stopped
and some characters appears only if i'm not logged in to tty...

Last edited by kokoko3k (2014-05-30 13:54:55)

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