thanks Martin, yes the problem is solved by #2 comment (apparently); so there is no hurry on my side and i'm waiting the new network-manager (should not wait a long time, it has been set to 'triaged') ; i then will revert my change to test the standard settings.
As it has happened on a fresh vivid being dist-upgrading to wily, i suppose some other users will also meet that issue.
#8 answer
thanks Martin, yes the problem is solved by #2 comment (apparently); so there is no hurry on my side and i'm waiting the new network-manager (should not wait a long time, it has been set to 'triaged') ; i then will revert my change to test the standard settings.
As it has happened on a fresh vivid being dist-upgrading to wily, i suppose some other users will also meet that issue.