New comment by ahesford on void-packages repository

https://github.com/void-linux/void-packages/issues/48876#issuecomment-1962802324

Comment:
This is a consequence of configuration choices made in the `gdm` package. While some users may want the brightness slider to work out of the box, other users may not want the `gdm` user to be assigned a valid login shell or may wish to restrict access to brightness. Some configuration may be necessary to get some software features to work as expected.