可能重复：
Acer Aspire S3 的屏幕亮度不可调
“亮度和锁定”控制不起作用，因此我尝试了一种涉及更改 grub 的解决方案，下面我将详细介绍：
# 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_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX="quiet splash acpi_backlight=vendor"
# 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"
完成此操作后，亮度控制消失了，如你所见
有什么想法吗？希望能够配置亮度，甚至使用 F.lux 等应用程序自动调节亮度。
编辑：我已将以下行修改为 GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi="，现在亮度控制已恢复，但无论我如何更改，亮度都保持不变。以防万一我使用的是 Intel H77
答案1
看解决方案在这里. 它使用 xbacklight 并xbacklight -set X作为启动程序运行。