Switch dual graphics on Linux to adjust the screen brightness (simple two commands to fix)

Cat/sys/kernel/debug/vgaswitcheroo/switch//view current video card status

IGD: Integrated display, integrated graphics; DIS:D iscrete display, discrete graphics

[Email protected] kiosk]# cat/sys/kernel/debug/vgaswitcheroo/switch0:igd:+:P wr:0000:00:02.01:dis:: Off:0 000:01:00.0

0 and 1 are serial numbers PWR indicates running off you know

echo off >/sys/kernel/debug/vgaswitcheroo/switch Close the currently unused video card

echo DIGD >/sys/kernel/debug/vgaswitcheroo/switch switch to Integrated graphics

General use off the current card can be switched to integrated video to protect the power supply and reduce heat dissipation ok!!!!

Down is the way to adjust the brightness of the screen

Echo 1800 >/sys/class/backlight/intel_backlight/brightness

1800 is the number you want to adjust is not very easy

Down and wrote them separately./etc/rc.local Boot PS Remember to check the/etc/rc.loca exist link to link file permissions plus x!!!

Haha simple share hope that more new people will see the protection of our eyesight and computer OH

Switch dual graphics on Linux to adjust the screen brightness (simple two commands to fix)