I experience this frequently on the Pro 5 as well. Sometimes when I pull down indicator for mobile it shows 3G or 4G, but shows no connection on the top indicator bar (see attached image).
** Attachment added: "Indicator schizofrenic about connection" https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1579098/+attachment/4684294/+files/screenshot20160608_073809323.png -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1579098 Title: [touch] Mobile data connection drops, and doesn't automatically reconnect Status in Canonical System Image: In Progress Status in network-manager package in Ubuntu: In Progress Bug description: Krillin, rc-proposed, r325 In the last couple of weeks it often happened that the mobile data connection dropped without reconnecting afterwards. I often find my device without mobile data connection without apparent reason. Switching mobile data connection Off and back On from settings restores the connection. I don't have any useful additional info to provide, unfortunately. Please let me know if you need log/cmd output in particular. phablet@ubuntu-phablet:~$ nmcli d status DEVICE TYPE STATE CONNECTION ril_1 gsm disconnected -- wlan0 wifi disconnected -- ril_0 gsm unavailable -- ifb0 ifb unmanaged -- ifb1 ifb unmanaged -- ip6tnl0 ip6tnl unmanaged -- sit0 iptunnel unmanaged -- lo loopback unmanaged -- tunl0 unknown unmanaged -- Syslog since last time mobile data was connected: http://pastebin.ubuntu.com/16259803/ To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1579098/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp