Disable exclusive display in Ubuntu

When running Ubuntu, because there is no need for exclusive applications, I want to turn off the exclusive display, only using the set display, power saving and cooling, theoretically suitable for a similar dual-graphics switch notebook, if you are using another notebook, please test the availability on your own. Preparation: If you have installed the ATI closed source driver, uninstall it first. If you have disabled dual-graphics switching in the BIOS, enable it first. Run the following command on the terminal: cat/sys/kernel/debug/vgaswitcheroo/switch.

When running Ubuntu, because there is no need for exclusive applications, I want to turn off the exclusive display, only using the set display, power saving and cooling, theoretically suitable for a similar dual-graphics switch notebook, if you are using another notebook, please test the availability on your own.

Preparation: If you have installed the ATI closed source driver, uninstall it first. If you have disabled dual-graphics switching in the BIOS, enable it first.

Run the following command on the terminal:

Cat/sys/kernel/debug/vgaswitcheroo/switch

Enable root in case of any problem.

If this is the case (both statuses are Pwr ):

0: IGD: +: Pwr: 0000: 00: 02.0
1: DIS: Pwr: 0000: 01: 00.0

It means that both of your video cards are on, so follow the steps below.
Create a script/usr/local/sbin/vgaswitcher

#! /Bin/bash
 
If ["$ (whoami )"! = "Root"]; then
Echo "Use as root"
Exit 1
Fi
 
If [-z "$1"]; then
Cmd = "OFF"
Else
If ["$1" = "-I"]; then
Cmd = "DIGD"
Elif ["$1" = "-d"]; then
Cmd = "DDIS"
Else
Cmd = $1
Fi
Fi
 
If (["$ cmd "! = "OFF"] & ["$ cmd "! = "DDIS"] & ["$ cmd "! = "DIGD"]); then
Echo "Bad Command! "
Exit 1
Fi
 
Echo "$ cmd">/sys/kernel/debug/vgaswitcheroo/switch
Cat/sys/kernel/debug/vgaswitcheroo/switch

Then create a STARTUP script/etc/init. d/vgaswitch.

#! /Bin/bash
 
If ["$1 "! = "Start"]; then
Exit;
Fi
 
/Usr/local/sbin/vgaswitcher
/Usr/local/sbin/vgaswitcher-I

After the establishment, run the following command:

Sudo chmod + x/usr/local/sbin/vgaswitcher/etc/init. d/vgaswitch & sudo update-rc.d vgaswitch defaults

You can disable exclusive display after restarting ~
You can run the initial command again to view the status:

Cat/sys/kernel/debug/vgaswitcheroo/switch

Now it should be like this (one Pwr and the other Off ):

0: IGD: +: Pwr: 0000: 00: 02.0
1: DIS: Off: 0000: 01: 00.0