On Thu, 17 May 2018 10:54:57 +0200
Gianluca Cecchi <gianluca.cecchi(a)gmail.com> wrote:
Thanks Stan for your feedback.
Actually it seems I've narrowed the origin of the problem.
I have been using Mate as DE for many months without any problem.
Only recently (when still in F27 and some days before the start of the
problems described in this thread) I switched from gdm to lghtdm
because I had some lagging events and I tried to eliminate at all
gnome/gdm/gnome-shell dependency
Now (I'm in F28) it is simply sufficient to re-enable gdm and
connectusing Gnome as DE to see that all is ok:
- logout/shutdown buttons without problems (previously a logout
originated an automatic relogin...)
- switch wifi on/off and other components (such as external usb disks)
without getting authorization errors
- audio adapter is seen ok with its analog and hdmi settings (and it
works too... ;-)
So it seems that the problem doesn't show with default Fedora
environment but only with the combination I outlined above.
I also tried Cinnamon (with lightdm) and same problems.
Possibly gdm in its start enables some permission for normal users
that lightdm (at least in latest updates) doesn't provide?
I'm going also to test other combinations, to narrow down better (eg
lightdm with gnome DE session, ecc...)
Excellent! And you know you have a working fallback, which is always
nice when testing. It's strange that a desktop manager would affect
this, since it is the desktop that performs the actions that are having
problems. Maybe you eliminated some gnome dependency that cinnamon and
mate were depending on? Or maybe you are right, and it is some
permission or configuration that lightdm is not completing as gdm does.