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GRUB_CMDLINE_LINUX_DEFAULT="acpi_backlight=vendor drm.vblankoffdelay=1"

grub-mkconfig -o /boot/grub/grub.cfg

update-grub

Linux version 3.2.0-4-amd64 (debian-kernel@lists.debian.org) (gcc version 4.6.3 (Debian 4.6.3-14) ) #1 SMP Debian 3.2.60-1+deb7u3

ls /sys/class/backlight/acpi_video0

ls: nie ma dostępu do /sys/class/backlight/acpi_video0: Nie ma takiego pliku ani katalogu

ls /sys/class/backlight/intel_backlight

actual_brightness  brightness  max_brightness  subsystem  uevent
bl_power

mati@debian:~$ dpkg -l | grep linux-image
ii  linux-image-3.14-0.bpo.2-amd64          3.14.15-2~bpo70+1                  amd64        Linux 3.14 for 64-bit PCs
ii  linux-image-3.2.0-4-amd64               3.2.60-1+deb7u3                    amd64        Linux 3.2 for 64-bit PCs
ii  linux-image-amd64                       3.14+59~bpo70+1                    amd64        Linux for 64-bit PCs (meta-package)

# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
#   info -f grub -n 'Simple configuration'

GRUB_DEFAULT=0
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet"
GRUB_CMDLINE_LINUX=""


# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"

# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true

# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_RECOVERY="true"

# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"

ii  linux-image-3.14-0.bpo.2-amd64          3.14.15-2~bpo70+1                  amd64        Linux 3.14 for 64-bit PCs
ii  linux-image-3.2.0-4-amd64               3.2.60-1+deb7u3                    amd64        Linux 3.2 for 64-bit PCs
ii  linux-image-amd64                       3.14+59~bpo70+1                    amd64        Linux for 64-bit PCs (meta-package)

mati@debian:~$ acpi_backlight=vendor drm.vblankoffdelay=1
bash: drm.vblankoffdelay=1: nie znaleziono polecenia

ls /sys/class/backlight/acpi_video0
ls /sys/class/backlight/intel_backlight

acpi_backlight=vendor

video.use_native_backlight=0

acpi_backlight=vendor drm.vblankoffdelay=1

ls /sys/class/backlight/acpi_video0
ls /sys/class/backlight/intel_backlight

mati@debian:~$ cat /etc/default/grub
# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
#   info -f grub -n 'Simple configuration'

GRUB_DEFAULT=0
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="acpi_backlight=vendor drm.vblankoffdelay=1"
GRUB_CMDLINE_LINUX=""


# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"

# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true

# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_RECOVERY="true"

# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"

#!/bin/sh
### BEGIN INIT INFO
# Provides:          brightness
# Required-Start:    $local_fs
# Required-Stop:     $local_fs
# Default-Start:     S
# Default-Stop:      0 6
# Short-Description: Save and restore brightness level between restarts
# Description:       This script saves the brightness level between restarts.
#                    It is called from the boot, halt and reboot scripts.
### END INIT INFO

PATH=/sbin:/bin
BLEVEL="/etc/brightness-level"
DEFAULT_LEVEL="670"
BRIGHTNESS_CONTROL="/sys/class/backlight/intel_backlight/brightness"
VERBOSE="yes"

. /lib/init/vars.sh
. /lib/lsb/init-functions

do_status () {
    echo -n "Current brightness level is `cat $BRIGHTNESS_CONTROL`"

    if [ -f $BLEVEL ] ; then
        echo ", saved value is `cat $BLEVEL`."
        return 0
    else
        echo ", there is no saved value."
        return 4
    fi
}

case "$1" in
  start|"")
    log_action_begin_msg "Initializing brightness level"
    # Restore brightness level
    if [ ! -f "$BLEVEL" ]
    then
        echo "$DEFAULT_LEVEL" > "$BLEVEL"
    fi
    cat "$BLEVEL" > "$BRIGHTNESS_CONTROL"
    ES=$?

    log_action_end_msg $ES
    ;;
  stop)
    # Save brightness level
    log_action_begin_msg "Saving brightness level"
    cat "$BRIGHTNESS_CONTROL" > "$BLEVEL"
    ES=$?
    log_action_end_msg $ES
    ;;
  status)
    do_status
    exit 0
    ;;
  restart|reload|force-reload)
    echo "Error: argument '$1' not supported" >&2
    exit 3
    ;;
  *)
    echo "Usage: brightness start|stop" >&2
    exit 3
    ;;
esac

exit 0

# update-rc.d brightness defaults

xbacklight -set 30

xrandr --output VGA1 --gamma 0.8:0.8:0.8 --brightness 0.9

#!/bin/bash

xrandr --output VGA1 --gamma 0.8:0.8:0.8 --brightness 0.9