Fast way to query brightness of X server?
I've programmed hotkeys to adjust brightness of an X server using xrandr. But to query the brightness by running xrandr --verbose -q takes about 350 milliseconds. For a key whose action is supposed to be instantaneous, the delay is very noticeable.
Is there another, faster way to find out the current brightness level as set by xrandr --brightness? Command line would be ideal, but I'm willing to write C code.
x11 brightness xrandr
asked Nov 20 '18 at 22:11
Norman RamseyNorman Ramsey
164k52321502
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I've programmed hotkeys to adjust brightness of an X server using xrandr. But to query the brightness by running xrandr --verbose -q takes about 350 milliseconds. For a key whose action is supposed to be instantaneous, the delay is very noticeable.
Is there another, faster way to find out the current brightness level as set by xrandr --brightness? Command line would be ideal, but I'm willing to write C code.
x11 brightness xrandr
asked Nov 20 '18 at 22:11
Norman RamseyNorman Ramsey
164k52321502
add a comment |
I've programmed hotkeys to adjust brightness of an X server using xrandr. But to query the brightness by running xrandr --verbose -q takes about 350 milliseconds. For a key whose action is supposed to be instantaneous, the delay is very noticeable.
Is there another, faster way to find out the current brightness level as set by xrandr --brightness? Command line would be ideal, but I'm willing to write C code.
x11 brightness xrandr
asked Nov 20 '18 at 22:11
Norman RamseyNorman Ramsey
164k52321502
I've programmed hotkeys to adjust brightness of an X server using xrandr. But to query the brightness by running xrandr --verbose -q takes about 350 milliseconds. For a key whose action is supposed to be instantaneous, the delay is very noticeable.
Is there another, faster way to find out the current brightness level as set by xrandr --brightness? Command line would be ideal, but I'm willing to write C code.
x11 brightness xrandr
x11 brightness xrandr
asked Nov 20 '18 at 22:11
Norman RamseyNorman Ramsey
164k52321502
asked Nov 20 '18 at 22:11
Norman RamseyNorman Ramsey
164k52321502
asked Nov 20 '18 at 22:11
Norman RamseyNorman Ramsey
164k52321502
asked Nov 20 '18 at 22:11
Norman RamseyNorman Ramsey
164k52321502
asked Nov 20 '18 at 22:11
Norman RamseyNorman Ramsey
164k52321502
164k52321502
add a comment |
add a comment |
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