[Bug 1967014] Re: Lenovo Ideapad 3 screen brightness F keys not working...

[Nick Rosbrook]

Are you still running Focal, or have you tried upgrading to Jammy (or
another release)? If this is still an issue on whatever release you are
running, can you please run:

$ sudo evtest

and when prompted, select device number that corresponds to your
keyboard. Then, press the key combination that you expect to adjust
brightness up, and then the same for brightness down, and attach that
output?

Please also attach the output of:

$ udevadm info /dev/input/eventX

where X is the same number selected in the evtest command, and the
output of:

$ cat /sys/class/dmi/id/modalias

** Changed in: systemd (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1967014

Title:
  Lenovo Ideapad 3 screen brightness F keys not working...

Status in systemd package in Ubuntu:
  Incomplete

Bug description:
  As the title says, the F keys the control screen brightness (F11/F12
  on the Lenovo Ideapad 3 15ITL05 laptop I have) don't work on Ubuntu
  21.10. All other special function keys (volume up/down, lock screen,
  airplane mode, etc...) and the screen brightness slider in the top
  right-hand corner work; it's just the brightness keys that are not
  working.

  I know I can just use the slider, but it's more convenient to use the
  F keys. I hope you are working on this for a future 21.10 update.

  Also, I originally installed 20.04 and upgraded to 21.10, but even on
  20.04, those keys weren't working, either.

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