I have Lubuntu 18.04.6 installed on a Dell Inspiron laptop. When I press suspend button, my laptop does not goes to suspend mode and just the screen turns off and if I press a key or move the mouse, screen turns on and Locked-Screen page is displayed.
Some times, after this unsuccessful suspend, after I logged in again, this message is displayed under the shutdown window:
GDBus.Error: org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying
Timeout has reached
and a dialog is popped up that says:
Authentication is required for suspending the system
and asks me to enter password. But after entering password nothing occurs!
Anyone can help me?