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jimmij
jimmij
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I executed xrandr --output HDMI1 --brightness 976 on KnosoleOn Knsole(GUI), I executed

xrandr --output HDMI1 --brightness 976

then the screen turned to almost a white board. I I can't use GUI any more. Press Press ctrl+alt+f2ctrl+alt+F2, got a tty. I want to reset brightness, but execute xrandr got can't not open display. Can

can't not open display

Can I change brightness from tty?

I executed xrandr --output HDMI1 --brightness 976 on Knosole(GUI), then the screen turned to almost a white board. I can't use GUI any more. Press ctrl+alt+f2, got a tty. I want to reset brightness, but execute xrandr got can't not open display. Can I change brightness from tty?

On Knsole(GUI) I executed

xrandr --output HDMI1 --brightness 976

then the screen turned to almost a white board. I can't use GUI any more. Press ctrl+alt+F2, got a tty. I want to reset brightness, but execute xrandr got

can't not open display

Can I change brightness from tty?

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Jeff Schaller ♦
Jeff Schaller ♦
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Aladin Lee
Aladin Lee
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How to change brightness from tty?

I executed xrandr --output HDMI1 --brightness 976 on Knosole(GUI), then the screen turned to almost a white board. I can't use GUI any more. Press ctrl+alt+f2, got a tty. I want to reset brightness, but execute xrandr got can't not open display. Can I change brightness from tty?