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kubuntu - Unable to change brightness in a Lenovo laptop - Ask Ubuntu
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日期：2026-04-21
If the GUI tools fail, try to use the terminal for it. Open a terminal Run: ls /sys/class/backlight/*/brightness. Example output would be: /sys/class/backlight/acpi_video0/brightness If nothing is found, the kernel does not support brightness control (mis...看更多
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