Ubuntu12.04 automatically sets the screen brightness upon startup

Ubuntu12.04 automatically sets the screen brightness after the installation of Ubuntu12.04, it is found that each boot screen is the maximum brightness, it is very troublesome to set the brightness every time, so search for a solution on the Internet, however, you have tried all the methods you can find and still cannot solve the problem. Through your own exploration, the end...
Ubuntu 12.04 automatically sets the screen brightness after Ubuntu is installed, it is found that each boot screen is the maximum brightness, it is very troublesome to set the brightness every time, so search for a solution on the Internet, however, you have tried all the methods you can find and still cannot solve the problem. Through your own exploration, you can finally set the brightness automatically after the boot. The solution below www.2cto.com is briefly described for Ubuntu users with the same problem. :) Ubuntu 12.04 automatically sets the brightness at startup: 1. open the software center and install the laptop-mode package. 2. open the File:/etc/laptop-mode/laptop-mode.conf and change the following flag to 1: ENABLE_LAPTOP_MODE_ON_AC = 1 save the file; 3. open the File:/etc/laptop-mode/conf. d/lcd-brightness.conf modify the following line: www.2cto.com CONTROL_BRIGHTNESS = 1 BATT_BRIGHTNESS_COMMAND = "echo 3" leading = "echo 3" leading = "echo 3" # BRIGHTNESS_OUTPUT = "/proc/acpi/video/VID/LCD/brightness" BRIG HTNESS_OUTPUT = "/sys/class/backlight/acpi_video0/brightness" to save the file; 4. run the sudo update-grub command; 5. restart the machine. From taozc's column