Solve the problem of dual-graphics card User Switching during ora16 brightness Scheduling

Solve the Problem of ora16 brightness scheduling and dual video card User Switching. ati Video Card scheduling brightness. Because fedora16 is guided in grub2, find the boot file/boot/grub2/grub. cfg: ctrl + f: Enter the string quiet to find the row, with spaces, add the guiding code: acpi_backlight = vendor acpi_osi = linux, and save. The restart takes effect. Www.2cto.com, but the default brightness of each login is always the highest, and the default two shows that the power is turned on, so the energy consumption increases heat discharge can be configured as follows: 1: Because fedora16 missing rc. local file, we can complete the new: gedit/etc/rc. d/rc. add the following statement to local :#! /Bin/sh/home/lows-1/startup/scriptname & # The module for switching the video card is still in the debug status, first, load these modules mount-t debugfs/sys/kernel/debug # disable unused graphics card power echo OFF>/sys/kernel/debug/vgaswitcheroo/switch # Set the default brightness echo 5>/sys/class/backlight/acpi_video0/brightnessecho low>/sys/class/drm/card0/device/power_profile save and exit and change rc. local permission chmod a + x/etc/rc. d/rc. create a soft link ln-s/etc/rc. d/rc. local/etc.