Xbacklight won't help to change brightness in lubuntu

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You should set the brightness from /sys/class/backlight/intel_backlight/brightness file, see my answer in: i3wm, adjust brightness through command line

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Ahmad Ali
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Ahmad Ali

Updated on September 18, 2022

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  • Ahmad Ali
    Ahmad Ali about 1 year

    I have an old acer laptop with following graphics hardware:

    00:02.0 VGA compatible controller [0300]: 
    Intel Corporation System Controller Hub (SCH Poulsbo) Graphics Controller [8086:8108] (rev 07)
        Subsystem: Acer Incorporated [ALI] Device [1025:0244]
    

    I used xbacklight's xbacklight -set XX and xbacklight -dec XX commands but they don't work. If I put these commands, the output is

    No outputs have backlight property