I experienced the same problem (wired AND wireless both down) on KDE Neon 18.04
Tried several things - plug in a LAN cable - restart network service - 2 reboots - checked that my router was not down (I had internet access on my cell phone wifi) The laptop is dual boot W10-KDE Neon Booting W10 --> I have network connection again. Boot KDE Neon again --> network wifi and Ethernet works again Unfortunately I cannot provide debug/error msgs as the problem was quickly solved by booting W10 and up to now it has not occured anymore. The only info I can provide is that it happened a few hours after doing updates. -- 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/1666432 Title: Internet drops every few minutes on wired and wireless connection Status in network-manager package in Ubuntu: Confirmed Bug description: Internet drops every 1-30 minutes when connected via wired or wireless (i.e., this is a problem on both wired and wireless) even though connection icon indicates the computer is still connected. Disconnecting and reconnecting via the connection icon resets internet temporarily until the next time. Dropped internet is discovered with "The site can't be reached" screens in Chromium, or error messages when downloading/updating in Terminal, or missing connection in Ubuntu Software app, or stalled syncing in Insync application (occurred even without Insync). Internet drops more frequently on wireless than on wired. It seems to disconnect more frequently with heavier internet use (e.g., downloading multiple files, opening several webpages in quick succession). This is a fresh install (yesterday) of Ubuntu 16.04 on a Dell Inspiron 15 5567 (dual boot). It occurs when running Live CD as well though. Ethernet and wifi both work without randomly disconnecting in Windows 10 on the same machine, and ethernet and wifi work on other machines running Ubuntu and Windows with the same router, so it is not a hardware or router issue. Output from sudo lshw -class network *-network description: Wireless interface product: Wireless 3165 vendor: Intel Corporation physical id: 0 bus info: pci@0000:02:00.0 logical name: wlp2s0 version: 79 serial: 58:fb:84:55:21:52 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=4.4.0-62-generic firmware=17.352738.0 ip=192.168.1.15 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn resources: irq:283 memory:df100000-df101fff *-network description: Ethernet interface product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:03:00.0 logical name: enp3s0 version: 07 serial: 18:db:f2:3c:d5:37 size: 10Mbit/s capacity: 100Mbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8106e-1_0.0.1 06/29/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s resources: irq:279 ioport:d000(size=256) memory:df000000-df000fff memory:d0300000-d0303fff ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: network-manager 1.2.2-0ubuntu0.16.04.3 ProcVersionSignature: Ubuntu 4.4.0-62.83-generic 4.4.40 Uname: Linux 4.4.0-62-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.5 Architecture: amd64 CurrentDesktop: Unity Date: Tue Feb 21 16:36:55 2017 IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2017-02-20 (1 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) IpRoute: default via 192.168.1.1 dev wlp2s0 proto static metric 600 169.254.0.0/16 dev wlp2s0 scope link metric 1000 192.168.1.0/24 dev wlp2s0 proto kernel scope link src 192.168.1.15 metric 600 NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true SourcePackage: network-manager UpgradeStatus: No upgrade log present (probably fresh install) nmcli-dev: DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH wlp2s0 wifi connected /org/freedesktop/NetworkManager/Devices/0 pr500k-9912ec-1 36301ded-0ac5-4a86-9621-87290ef159af /org/freedesktop/NetworkManager/ActiveConnection/5 enp3s0 ethernet unavailable /org/freedesktop/NetworkManager/Devices/1 -- -- -- lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/2 -- -- -- nmcli-nm: RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN running 1.2.2 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/1666432/+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
