I solved my connection problem as follows: I edited the existing connection and changed the IPV4 settings to Automatic Address Only (DHCP), and then changed the DNS servers to 8.8.8.8,8.8.4.4 and solved the problem.
-- 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/1761998 Title: The wi-fi internet connects but after 10 minutes it drops. Status in network-manager package in Ubuntu: New Bug description: The wi-fi connection connects more drops after about 10 minutes where it is possible to connect it again, but again it drops. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: network-manager 1.10.6-2ubuntu1 ProcVersionSignature: Ubuntu 4.15.0-13.14-lowlatency 4.15.10 Uname: Linux 4.15.0-13-lowlatency x86_64 ApportVersion: 2.20.9-0ubuntu4 Architecture: amd64 CurrentDesktop: XFCE Date: Sat Apr 7 11:04:44 2018 IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2018-04-07 (0 days ago) InstallationMedia: Ubuntu-Studio 18.04 LTS "Bionic Beaver" - Beta amd64 (20180404) IpRoute: default via 10.0.0.1 dev wlxc4e98413a74f proto dhcp metric 600 10.0.0.0/24 dev wlxc4e98413a74f proto kernel scope link src 10.0.0.103 metric 600 169.254.0.0/16 dev wlxc4e98413a74f scope link metric 1000 NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true ProcEnviron: LANGUAGE=pt_BR: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=pt_BR.UTF-8 SHELL=/bin/bash RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: network-manager UpgradeStatus: No upgrade log present (probably fresh install) nmcli-con: NAME UUID TYPE TIMESTAMP TIMESTAMP-REAL AUTOCONNECT AUTOCONNECT-PRIORITY READONLY DBUS-PATH ACTIVE DEVICE STATE ACTIVE-PATH SLAVE Fortrek0909 5a247d4c-a0b5-487b-adcb-f1237683555d wifi 1523109729 sáb 07 abr 2018 11:02:09 -03 yes 0 no /org/freedesktop/NetworkManager/Settings/1 yes wlxc4e98413a74f activated /org/freedesktop/NetworkManager/ActiveConnection/1 -- Conexão cabeada 1 fd5e2446-6bfd-3a27-80d8-d82f8d6cf185 ethernet 1523109725 sáb 07 abr 2018 11:02:05 -03 yes 4294966297 no /org/freedesktop/NetworkManager/Settings/2 no -- -- -- -- nmcli-dev: DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH wlxc4e98413a74f wifi connected /org/freedesktop/NetworkManager/Devices/3 Fortrek0909 5a247d4c-a0b5-487b-adcb-f1237683555d /org/freedesktop/NetworkManager/ActiveConnection/1 enp1s0 ethernet unavailable /org/freedesktop/NetworkManager/Devices/2 -- -- -- lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/1 -- -- -- nmcli-nm: RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN running 1.10.6 connected started full enabled enabled enabled enabled enabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1761998/+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