Please install evtest, run "sudo evtest", pick the plausible device
(there might be several, and if you don't get events on one, try with
another), press the two brightness keys, and copy&paste the output here.
Please annotate the output with which key you actually pressed (i. e.
"this is the output after pressing britghtness down:").
Finally, please give me the output of "cat /sys/class/dmi/id/modalias".
** Changed in: systemd (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1523041
Title:
Lenovo S21e: brightness keys seem inversed
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