Description of problem: After upgrading the cinnamon packages, I noticed that the screen brightness control buttons do not work anymore. Looking at journalctl, I got: May 19 22:06:42 lars csd-media-keys[1610]: Failed to get old screen percentage: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.cinnamon.SettingsDaemon was not provided by any .service files After which I noticed that the cinnamon-settings-daemon did not run at all, which lead me to notice that there is an invalid symlink in /usr/bin/cinnamon-settings-daemon which might be the cause: % ll /usr/bin/cinnamon-settings-daemon lrwxrwxrwx. 1 root root 37 May 8 21:45 /usr/bin/cinnamon-settings-daemon -> /usr/libexec/cinnamon-settings-daemon % ll /usr/libexec/cinnamon-settings-daemon ls: cannot access '/usr/libexec/cinnamon-settings-daemon': No such file or directory Version-Release number of selected component (if applicable): 3.4.0-1.fc25
*** This bug has been marked as a duplicate of bug 1452876 ***