It is still happening ! I thought it work better cause yesterday i didn't had the problem at all but today it happened again.
The problem i think precisely is that the bluetooth connection is reseted and a moment later the mouse is peered again but as another device !! Thanx for the help -- Bluetooth v270 logitech mouse don't stay peerded https://launchpad.net/bugs/65069 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs