Public bug reported:
As soon as I updated to the latest kernel I was unable to lower my
brightness (fn + f4). Everything else, including increasing the
brightness, works fine. The f4 key also works fine otherwise. I tried to
revert to the previous version and the problem persists.
Linux Mint 21.3. The kernel I installed which caused the problem is
5.15.0-138
I don't know how to do this step: 2) The version of the package you are
using, via 'apt-cache policy pkgname' or by checking in Software Center
Command 'ubuntu-bug' not found, but can be installed with:
sudo apt install apport
Should I install that to report the bug?
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2107714
Title:
Unable to lower brightness after update
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