On 8/13/19 1:23 AM, Ian Pilcher wrote:
I have a Dell Precision 5520 laptop (basically an XPS 15). The
volume,
mute, and brightness "function" keys have always just worked on this
laptop with no additional configuration required ... until now.
Something has changed in the last week or two, and the keys no longer
have any effect (except that the brightness increase key now toggles
the maximized state of terminal windows).
Have you tried an earlier kernel to see if that's where the change happened?