新安裝Linux后有些筆記本電腦無法調節亮度,本人整理了下比較實用的修改文件使系統亮度可調的方法。
Ubuntu、Mint、Kali親測有效
Deepin測試失敗,不知道為什么。下面有針對這個情況做的一個補救。
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1.修改 grub
sudo vi /etc/default/grub
把 GRUB_CMDLINE_LINUX="" 改成 GRUB_CMDLINE_LINUX="acpi_backlight=vendor"
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下面是修改后的grub文件:
# 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_DEFAULT="quiet splash" GRUB_CMDLINE_LINUX="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"
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2. 更新: grub.cfg
sudo update-grub
查看grub.cfg,可以發現每個啟動項都加入了"acpi_backlight=vendor"
PS:grub.cfg 位於 /boot/grub/grub.cfg
3.針對Deepin亮度調節的補救
在應用商店里搜索、安裝Redshift,這個是顯示器色溫自動調整的應用,由於沒有找到可行的快捷鍵調整亮度的辦法,使用這個軟件可以稍微保護一下眼睛,不至於晚上的時候太刺眼。
至於使用echo修改文件數值達到修改屏幕亮度的方法,本人認為太麻煩,就沒采用。有想使用此方法的可以自行百度。