| ACTION=="change", SUBSYSTEM=="backlight", RUN+="/usr/sbin/intelbacklight.sh" |
A udev rules for laptop, set intel graphic card brightness.
On some laptop, there are mutil-GPU exist, the brightness hotkey(FN+F6 FN+F7) can not change backlight.
This rules is used to fix this issue.
###Archlinux User
makepkg -si
###Other Linux User Install udev
cp 99-intelbacklight.rules /etc/udev/rules.d/
cp intelbacklight.sh /usr/sbin/
| #!/bin/bash | |
| intelmaxbrightness=`cat /sys/class/backlight/intel_backlight/max_brightness` | |
| acpimaxbrightness=`cat /sys/class/backlight/acpi_video0/max_brightness` | |
| scale=`expr $intelmaxbrightness / $acpimaxbrightness` | |
| acpibrightness=`cat /sys/class/backlight/acpi_video0/brightness` | |
| newintelbrightness=`expr $acpibrightness \* $scale` | |
| curintelbrightness=`cat /sys/class/backlight/intel_backlight/actual_brightness` | |
| if [ "$newintelbrightness" -ne "$curintelbrightness" ]; then | |
| echo $newintelbrightness > /sys/class/backlight/intel_backlight/brightness | |
| fi | |
| exit 0 |
| # Maintainer: Jason <jsfaint@gmail.com> | |
| pkgname=intelbacklight | |
| pkgver=0.1 | |
| pkgrel=1 | |
| pkgdesc="tools for setting intel GPU backlight" | |
| arch=('any') | |
| license=("GPL") | |
| source=("99-intelbacklight.rules" "intelbacklight.sh") | |
| md5sums=('c874bdd182f6040d7885675d8a66bd3c' '7c312d3f4780a356832c0af85d98ed8c') | |
| depends=('udev') | |
| package() | |
| { | |
| install -Dm644 ${srcdir}/99-intelbacklight.rules ${pkgdir}/etc/udev/rules.d/99-intelbacklight.rules | |
| install -Dm755 ${srcdir}/intelbacklight.sh ${pkgdir}/usr/sbin/intelbacklight.sh | |
| } |