On Sat Feb 25 2017 10:22:17 GMT-0700 (MST) Bowen Wang <bowenwang.tinker@xxxxxxxxx> wrote: > ping www.google.com the terminal says that the service is unknown. The message indicates that your network is "down". Since the other kernel works I would suspect the network driver for your wireless or wired interface. Does testing with the "other" interface -- wired or wireless -- produce the same result? NetworkManager applet should give visual clues about connection status, or from a terminal use 'nmcli' or 'ip'. Also check the system logs for any errors related to network stack. -- Viorel _______________________________________________ test mailing list -- test@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to test-leave@xxxxxxxxxxxxxxxxxxxxxxx