Internet drops every few minutes on wired and wireless connection

[tyknkd]

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

[Po-Hsu Lin (cypressyew)]

Hello, as you mentioned that this can be reproduced with LiveCD, do you mind to give 16.04.2 (which is using 4.8 kernel, or even test it with 17.04 daylive) a try?
Thanks

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[tyknkd (tyknkd)]

Sorry, just now saw your comment, Po-Hsu Lin. I will try with 17.04 LiveCD when I have a spare moment. It's the beginning of the school year here, so I have my hands full teaching at the moment.

[Giampi Frello (gp-frello)]

I'm having the same problem since when I fresh installed Ubuntu (Budgie) 17.04.
I then reinstalled Ubuntu (Unity) 16.04 LTS and having the same problem, LIVE versions included.

Interestingly this seems happening on my home router only, at work (always wifi) it works with no issue.

[RumtumTugger (tp-groen)]

Same problem here after a fresh install the day after the release date. This is really annoying. I already changed the ipv4 method to Automatic (DHCP) addresses only and added DNS servers 8.8.8.8, 8.8.4.4, but the problem is still there. Under 16.10 no such problem here.
I hope there will be a fix soon.

[RumtumTugger (tp-groen)]

Must say, since my post of April 24th, the problem has not reoccurred. Settings still as mentioned above. So with these settings it was a one-off incident.

[RumtumTugger (tp-groen)]

Having said that, it just happened again. An hour after my previous post.

[thinow (thinow)]

I have the same problem under Ubuntu 17.04. Wifi connection is dropped randomly after a couple of minutes.

Output of $ sudo lshw -class network

  *-network
       description: Ethernet interface
       product: Killer E220x Gigabit Ethernet Controller
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: enp4s0
       version: 13
       serial: 44:8a:5b:6e:a0:f8
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi msix bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=alx latency=0 link=no multicast=yes port=twisted pair
       resources: irq:19 memory:f7300000-f733ffff ioport:c000(size=128)
  *-network
       description: Wireless interface
       product: Wireless 7260
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:05:00.0
       logical name: wlp5s0
       version: 6b
       serial: 7c:7a:91:9a:9e:da
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=4.10.0-22-generic firmware=17.459231.0 ip=192.168.2.106 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:32 memory:f7200000-f7201fff

[Lasse Kuusisto (lakyy)]

I have the same problem on both wired and wireless. Today already four times just randomly wired connection stopped working...

sudo lshw -class network
  *-network
       description: Wireless interface
       product: Wireless 8260
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlp2s0
       version: 3a
       serial: 14:ab:c5:2a:d5:1e
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=4.10.0-22-generic firmware=21.302800.0 ip=10.2.27.30 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:287 memory:e1100000-e1101fff
  *-network
       description: Ethernet interface
       product: Ethernet Connection I219-V
       vendor: Intel Corporation
       physical id: 1f.6
       bus info: pci@0000:00:1f.6
       logical name: enp0s31f6
       version: 21
       serial: 3c:52:82:49:ed:95
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=0.13-4 latency=0 link=no multicast=yes port=twisted pair
       resources: irq:279 memory:e1400000-e141ffff
  *-network
       description: Ethernet interface
       physical id: 2
       logical name: enx6c0b84b29ded
       serial: 6c:0b:84:b2:9d:ed
       capabilities: ethernet physical
       configuration: broadcast=yes driver=cdc_ncm driverversion=22-Aug-2005 firmware=CDC NCM link=yes multicast=yes

[RumtumTugger (tp-groen)]

I did as described by Tokyobadger https://ubuntuforums.org/archive/index.php/t-2347827.html on 18may2017, and the problem has vanished unti now (12jun2017).

[Lasse Kuusisto (lakyy)]

wow, I removed the ethernet cable and used wi-fi only for two days. Everything worked perfectly. This morning I plugged the ethernet cable in and the problem came back in about two hours!

[Al Thomason (al-thomason)]

I too am having this issue, and at times now it will not reconnect.

  *-network
       description: Wireless interface
       product: Wireless 8260
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlan0
       version: 3a
       serial: f0:d5:bf:e6:21:39
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=4.4.0-96-generic firmware=16.242414.0 ip=192.168.37.145 latency=0 link=yes multicast=yes wireless=IEEE 802.11abg
       resources: irq:134 memory:ddc00000-ddc01fff

Dell precision 5510, Ubuntu 16.04 lts. I only use WiFi, no hardwired Ethernet connection.

[Adolfo De Unanue (nanounanue)]

Hi

I am facing same the problem

These are my settings

 *-network
       description: Wireless interface
       product: Wireless 3165
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: wlp1s0
       version: 91
       serial: 00:16:eb:ea:ec:82
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=4.10.0-37-generic firmware=22.391740.0 ip=10.150.225.90 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:301 memory:91800000-91801fff
  *-network
       description: Ethernet interface
       physical id: 1
       logical name: docker0
       serial: 02:42:52:82:cd:45
       capabilities: ethernet physical
       configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A ip=172.17.0.1 link=no multicast=yes

Any news about this?

[Otávio Augusto Soares (otaviokk)]

Same here on Ubuntu 17.10

*-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: enp4s0
       version: 10
       serial: 20:47:47:76:7b:a5
       size: 10Mbit/s
       capacity: 1Gbit/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 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168g-3_0.0.1 04/23/13 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:317 ioport:d000(size=256) memory:df304000-df304fff memory:df300000-df303fff
  *-network
       description: Wireless interface
       product: Wireless 3165
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:05:00.0
       logical name: wlp5s0
       version: 79
       serial: 08:d4:0c:a8:60:a6
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=4.13.0-16-lowlatency firmware=29.541020.0 ip=192.168.0.11 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:319 memory:df200000-df201fff

[Ryan Lounsbury (ryanmlounsbury)]

I am also getting this in 17.10 on a Dell Optiplex 9020. It works fine for about 20-30 minutes and then I can't ping the network and all network connected jobs stop responding. It stays that way for 2-5 minutes and then it comes back up. Network status shows connected and never indicates that the network connection itself stopped working. It is driving me batty.

  *-network
       description: Ethernet interface
       product: Ethernet Connection I217-LM
       vendor: Intel Corporation
       physical id: 19
       bus info: pci@0000:00:19.0
       logical name: eno1
       version: 04
       serial: f8:b1:56:dc:f7:f2
       size: 100Mbit/s
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k duplex=full firmware=0.13-4 ip=192.168.120.85 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
       resources: irq:28 memory:f7c00000-f7c1ffff memory:f7c3d000-f7c3dfff ioport:f080(size=32)

[DavidV (david-varnes)]

Same symptoms on a Dell XPS13

Ubuntu 17.10. Happens very frequently on WiFi, but also with my D-Link USB ethernet dongle.

sudo lshw -class network
[sudo] password for davidv:
  *-network
       description: Wireless interface
       product: Wireless 7265
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlp2s0
       version: 48
       serial: 5c:e0:c5:35:38:92
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=4.13.0-36-generic firmware=17.608620.0 ip=10.10.2.70 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:51 memory:f7000000-f7001fff
  *-network
       description: Ethernet interface
       physical id: 2
       bus info: usb@3:1
       logical name: enxc0a0bb58a609
       serial: c0:a0:bb:58:a6:09
       size: 1Gbit/s
       capacity: 1Gbit/s
       capabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=ax88179_178a duplex=full ip=10.10.1.40 link=yes multicast=yes port=MII speed=1Gbit/s

[Daniel B (bdan)]

I am also having the same issue on my Thinkpad E460 under Ubuntu 17.10. It started a couple of week ago and got really annoying. Sometimes the connection is just gone for a few seconds up to 2 or 3 minutes and sometimes it seems turning the WiFi module off and on again helps. The same problem occurs via Ethernet too, but less frequently.

sudo lshw -class network
  *-network
       description: Wireless interface
       product: Dual Band Wireless-AC 3165 Plus Bluetooth
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: wlp1s0
       version: 79
       serial: e0:94:67:45:be:3d
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=4.13.0-37-generic firmware=29.610311.0 ip=192.168.0.25 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:130 memory:f1200000-f1201fff
  *-network
       description: Ethernet interface
       product: Ethernet Connection I219-V
       vendor: Intel Corporation
       physical id: 1f.6
       bus info: pci@0000:00:1f.6
       logical name: enp0s31f6
       version: 21
       serial: 50:7b:9d:78:29:4b
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=0.13-4 latency=0 link=no multicast=yes port=twisted pair
       resources: irq:129 memory:f1300000-f131ffff

[Dominador Ramos Jr. (mongramosjr)]

Same issue here on my laptop computer ACER Aspire ES1-433 after upgrading to 17.10 from 16.04.3

uname -a
Linux mong-Aspire-ES1-433 4.13.0-38-generic #43-Ubuntu SMP Wed Mar 14 15:20:44 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

sudo lshw -class network
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: enp1s0
       version: 15
       serial: 78:f2:9e:f7:7d:68
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
       resources: irq:126 ioport:3000(size=256) memory:b1204000-b1204fff memory:b1200000-b1203fff
  *-network
       description: Wireless interface
       product: QCA9377 802.11ac Wireless Network Adapter
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlp2s0
       version: 31
       serial: 94:e9:79:ab:84:33
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=ath10k_pci driverversion=4.13.0-38-generic firmware=WLAN.TF.1.0-00267-1 ip=192.168.254.100 latency=0 link=yes promiscuous=yes wireless=IEEE 802.11
       resources: irq:129 memory:b1000000-b11fffff
?field.comment=Same issue here on my laptop computer ACER Aspire ES1-433 after upgrading to 17.10 from 16.04.3

uname -a
Linux mong-Aspire-ES1-433 4.13.0-38-generic #43-Ubuntu SMP Wed Mar 14 15:20:44 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

sudo lshw -class network
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: enp1s0
       version: 15
       serial: 78:f2:9e:f7:7d:68
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
       resources: irq:126 ioport:3000(size=256) memory:b1204000-b1204fff memory:b1200000-b1203fff
  *-network
       description: Wireless interface
       product: QCA9377 802.11ac Wireless Network Adapter
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlp2s0
       version: 31
       serial: 94:e9:79:ab:84:33
       width: 64 bits
       clock: 33MHz
  ...

[mohammad sadegh dehghan niri (msdn2013)]

i also having same problem with wired connection!! ubuntu 16.04.4

[Sahand Vahidnia (sohanad1990)]

I am also having a similar issue in Ubuntu 18.04.
This happens right after opening some tabs and streams. The network icon stays there, but internet drops. Restarting the wifi doesn't solve the problem most times.
The laptop is ASUS Vivobook S14.
  *-network
       description: Wireless interface
       product: QCA9377 802.11ac Wireless Network Adapter
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlp2s0
       version: 31
       serial: 40:9f:38:db:ca:0b
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=ath10k_pci driverversion=4.15.0-30-generic firmware=WLAN.TF.1.0-00002-QCATFSWPZ-5 ip=192.168.1.157 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:129 memory:ef200000-ef3fffff

I've also tried using a realtek wifi dongle, which solved the problem to a point. However when I use that, it fails to connect to the wifi and takes about 3-5 minutes of constant connection attempts. So I gave up on that too.
I don't have this problem with my other laptops.

[spirit (account-1)]

I had the same problem on 17.04 with an ASUS USB-N13 wireless adapter. I hoped upgrading the OS to 18.04 would solve it. I did that a few days ago and the problem persists.

So I bought a network cable. But guess what: it also happens on the wired Ethernet connection.

The problem is that the interfaces seem to somehow lose their IPs. This only happens on my desktop, the laptop works fine. The desktop has dual boot with a Win 10 installation, it also works fine under Win 10 (both wired and wireless).

[VilijaR (briedee)]

I had (fingers crossed that I fixed it) this same thing with my brand new Dell 3567 laptop that came with Ubuntu 16.04 LTS.

I noticed that the wifi (no wired connection in my home) behaved exactly like the initial report... but only when my mother turned on her tablet, other times it worked perfectly. However, once she connects her tablet, my laptop every 5-10 min seemed to "forget" it was connected. Most of the times the network manager showed the connected indicator but Chromium was telling me that there's no internet, occasionally the issue appeared as asking to re-sign in randomly.

After searching the internet, I found this rather cryptic sentence in a HP laptop support site: "There are some compatibility issues when using 802.11g and 802.11n devices on the same WLAN". Mother's tablet is b/g, my laptop b/g/n - the router was set to b/g/n mixed mode, with provider restriction to 2.4GHz channels only. On a hunch I changed the router setting to b/g mixed (I couldn't find how to temporary disable the 802.11n protocol in my laptop to check) and it's now been 3 days without any interruption, so I assume at least in my case the bug had something to do with that.

Since it seems that I can fix the issue via router settings, I assume I can reenable the issue if data is needed.

[Ilya Sheershoff (sheershoff)]

Have same RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller and r8169 driver.

$ lspci -knn | grep Eth -A3
01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
    Subsystem: Micro-Star International Co., Ltd. [MSI] RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [1462:7b33]
    Kernel driver in use: r8169
    Kernel modules: r8169

See the difference in controller and driver?

I'm online for an hour since:

try connecting via wifi and
1. sudo apt-get update
2. sudo apt-get install r8168-dkms
 - to install the r8168 kernel driver (suppressing the r8169 driver that came default with the kernel)
3. Reboot the PC
4. Enroll the MOK

Credits: https://askubuntu.com/a/1043584/222703

[Michael Morisette (mtnarwhal)]

This started happening for me within the last week or so. A recent update may have triggered it?

I'm on a wired connection. The connection randomly drops within a half hour of system startup. I can disconnect and reconnect and it seems to fix it.

I dual-boot occasionally to Windows 7 (same machine), and it doesn't appear to be an issue there. Definitely an Ubuntu specific bug

[dah bien-hwa (dahbien-hwa)]

I'm also seeing it right now on XUbuntu 18.10 with a Dell XPS 15 9570 (also Killer WiFI chip).

[Marc (mbbs)]

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.

[Pipash (faopipash)]

I too have similar problem on ubuntu 18.04. I never tried with wire connection, but my wifi connection repeatedly failing after few minutes. I tried several solutions. I installed driver=r8168 driverversion=8.046.00-NAPI after downloading from realtek software download but no good result.

lshw -C network gives me following informations:

*-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: enp2s0
       version: 10
       serial: 70:4d:7b:3b:3a:ee
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8168 driverversion=8.046.00-NAPI latency=0 link=no multicast=yes port=twisted pair
       resources: irq:127 ioport:d000(size=256) memory:ef404000-ef404fff memory:ef400000-ef403fff
  *-network
       description: Wireless interface
       product: QCA9377 802.11ac Wireless Network Adapter
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlp3s0
       version: 31
       serial: f0:03:8c:07:59:17
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=ath10k_pci driverversion=4.15.0-42-generic firmware=WLAN.TF.1.0-00002-QCATFSWPZ-5 ip=192.168.1.5 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:129 memory:ef200000-ef3fffff

I am badly affected. Killed lots of my times

[Loai Ghoraba (loai.ghoraba)]

Same here ! Fresh Dell inspiron 5570, this bug occurs with both ubuntu 16.04 and 18.04

  *-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@0000:02:00.0
       logical name: enp2s0
       version: 07
       serial: 3c:2c:30:a1:25:ad
       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:127 ioport:d000(size=256) memory:d2204000-d2204fff memory:d2200000-d2203fff
  *-network
       description: Wireless interface
       product: QCA9377 802.11ac Wireless Network Adapter
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlp3s0
       version: 31
       serial: 80:2b:f9:4b:c7:0d
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=ath10k_pci driverversion=4.15.0-43-generic firmware=WLAN.TF.1.0-00002-QCATFSWPZ-5 ip=192.168.1.2 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:130 memory:d2000000-d21fffff

any help ???

[elpidio (elpidiovaldez5)]

I can't add to much, apart from saying that this bug affects me too. Wired and wireless internet connectivity fails about 2 or 3 times per hour. Sometimes it comes back after a couple of minutes, particularly if I diconnect and reconnect the wirelss connection. I use Lubuntu 18.04 on an Asus X99 Deluxe II motherboard. It's annoying !

  *-network
       description: Ethernet interface
       product: Ethernet Connection (2) I218-V
       vendor: Intel Corporation
       physical id: 19
       bus info: pci@0000:00:19.0
       logical name: eno1
       version: 05
       serial: 70:4d:7b:28:ca:96
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=0.1-4 latency=0 link=no multicast=yes port=twisted pair
       resources: irq:68 memory:fb100000-fb11ffff memory:fb136000-fb136fff ioport:f000(size=32)
  *-network
       description: Ethernet interface
       product: I211 Gigabit Network Connection
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:0c:00.0
       logical name: enp12s0
       version: 03
       serial: 70:4d:7b:28:ca:97
       size: 100Mbit/s
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi msix pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=igb driverversion=5.4.0-k duplex=full firmware=0. 6-1 ip=192.168.1.197 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
       resources: irq:18 memory:fb600000-fb61ffff ioport:c000(size=32) memory:fb620000-fb623fff
  *-network
       description: Wireless interface
       product: BCM4360 802.11ac Wireless Network Adapter
       vendor: Broadcom Limited
       physical id: 0
       bus info: pci@0000:0e:00.0
       logical name: wlp14s0
       version: 03
       serial: f0:03:8c:3d:0b:c9
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=wl0 driverversion=6.30.223.271 (r587334) ip=192.168.1.175 latency=0 multicast=yes wireless=IEEE 802.11
       resources: irq:18 memory:fb400000-fb407fff memory:fb200000-fb3fffff

[Dan Candeto (dcandeto)]

I'm experiencing what may be the same thing in bug #1804280. I can't duplicate the issue on wireless networks, only Ethernet (but the issue is the same whether I use the onboard Ethernet or a USB Ethernet interface).

[Dan Candeto (dcandeto)]

Persists on a freshly reinstalled system.

Output from ping -i6 [host] follows. Note the spike in ping time and high packet loss.

64 bytes from [host]: icmp_seq=3833 ttl=64 time=0.223 ms
64 bytes from [host]: icmp_seq=3834 ttl=64 time=0.212 ms
64 bytes from [host]: icmp_seq=3835 ttl=64 time=0.156 ms
64 bytes from [host]: icmp_seq=3836 ttl=64 time=0.347 ms
64 bytes from [host]: icmp_seq=3837 ttl=64 time=0.216 ms
64 bytes from [host]: icmp_seq=3838 ttl=64 time=0.316 ms
64 bytes from [host]: icmp_seq=3839 ttl=64 time=0.320 ms
64 bytes from [host]: icmp_seq=3840 ttl=64 time=0.168 ms
64 bytes from [host]: icmp_seq=3841 ttl=64 time=336 ms
64 bytes from [host]: icmp_seq=3843 ttl=64 time=216 ms
64 bytes from [host]: icmp_seq=3845 ttl=64 time=515 ms
64 bytes from [host]: icmp_seq=3846 ttl=64 time=423 ms
64 bytes from [host]: icmp_seq=3847 ttl=64 time=498 ms
64 bytes from [host]: icmp_seq=3849 ttl=64 time=569 ms
64 bytes from [host]: icmp_seq=3851 ttl=64 time=532 ms
64 bytes from [host]: icmp_seq=3853 ttl=64 time=496 ms
64 bytes from [host]: icmp_seq=3855 ttl=64 time=502 ms
64 bytes from [host]: icmp_seq=3857 ttl=64 time=424 ms
64 bytes from [host]: icmp_seq=3859 ttl=64 time=346 ms
64 bytes from [host]: icmp_seq=3861 ttl=64 time=352 ms
64 bytes from [host]: icmp_seq=3863 ttl=64 time=358 ms
64 bytes from [host]: icmp_seq=3865 ttl=64 time=573 ms
64 bytes from [host]: icmp_seq=3867 ttl=64 time=495 ms
64 bytes from [host]: icmp_seq=3869 ttl=64 time=627 ms
64 bytes from [host]: icmp_seq=3871 ttl=64 time=465 ms
64 bytes from [host]: icmp_seq=3873 ttl=64 time=261 ms
64 bytes from [host]: icmp_seq=3875 ttl=64 time=518 ms
64 bytes from [host]: icmp_seq=3877 ttl=64 time=440 ms
64 bytes from [host]: icmp_seq=3879 ttl=64 time=400 ms
64 bytes from [host]: icmp_seq=3881 ttl=64 time=410 ms
64 bytes from [host]: icmp_seq=3883 ttl=64 time=542 ms
64 bytes from [host]: icmp_seq=3885 ttl=64 time=338 ms
64 bytes from [host]: icmp_seq=3887 ttl=64 time=511 ms
64 bytes from [host]: icmp_seq=3889 ttl=64 time=475 ms
64 bytes from [host]: icmp_seq=3891 ttl=64 time=230 ms
64 bytes from [host]: icmp_seq=3893 ttl=64 time=571 ms
64 bytes from [host]: icmp_seq=3894 ttl=64 time=564 ms
64 bytes from [host]: icmp_seq=3896 ttl=64 time=598 ms
64 bytes from [host]: icmp_seq=3898 ttl=64 time=604 ms
64 bytes from [host]: icmp_seq=3900 ttl=64 time=317 ms
64 bytes from [host]: icmp_seq=3902 ttl=64 time=239 ms
64 bytes from [host]: icmp_seq=3904 ttl=64 time=538 ms
64 bytes from [host]: icmp_seq=3906 ttl=64 time=795 ms
64 bytes from [host]: icmp_seq=3907 ttl=64 time=453 ms
64 bytes from [host]: icmp_seq=3909 ttl=64 time=571 ms
64 bytes from [host]: icmp_seq=3911 ttl=64 time=535 ms
64 bytes from [host]: icmp_seq=3913 ttl=64 time=373 ms
64 bytes from [host]: icmp_seq=3915 ttl=64 time=463 ms
64 bytes from [host]: icmp_seq=3917 ttl=64 time=385 ms
64 bytes from [host]: icmp_seq=3919 ttl=64 time=265 ms
64 bytes from [host]: icmp_seq=3921 ttl=64 time=564 ms
64 bytes from [host]: icmp_seq=3923 ttl=64 time=444 ms
64 bytes from [host]: icmp_seq=3925 ttl=64 time=367 ms
64 bytes from [host]: icmp_seq=3927 ttl=64 time=0.123 ms
64 bytes from [host]: icmp_seq=3928 ttl=64 time=0.284 ms
64 bytes from [host]: i...

[Rodrigo Guariento (rodrigoguariento)]

I am facing the same problem with 2 wired connections. No matter what I do, if I connect with 1st ethernet or switch to 2nd wired, the problem persists. After boot up, when the problem starts, I switch the cable of ethernet and temporally the problem finishes.

$ sudo lshw -C network
[sudo] password for rodrigo:
  *-network
       description: Ethernet interface
       product: I211 Gigabit Network Connection
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: enp4s0
       version: 03
       serial: 1c:1b:0d:63:ab:3b
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi msix pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=igb driverversion=5.4.0-k duplex=full firmware=0. 6-1 ip=192.168.0.106 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
       resources: irq:16 memory:dfd00000-dfd1ffff ioport:d000(size=32) memory:dfd20000-dfd23fff
  *-network DISABLED
       description: Wireless interface
       product: Wireless 8260
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:05:00.0
       logical name: wlp5s0
       version: 3a
       serial: e4:a4:71:62:32:bb
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=4.15.0-45-generic firmware=34.0.1 latency=0 link=no multicast=yes wireless=IEEE 802.11
       resources: irq:131 memory:dfc00000-dfc01fff
  *-network
       description: Ethernet interface
       product: Ethernet Connection (2) I219-V
       vendor: Intel Corporation
       physical id: 1f.6
       bus info: pci@0000:00:1f.6
       logical name: enp0s31f6
       version: 31
       serial: 1c:1b:0d:63:ab:39
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=0.8-4 latency=0 link=no multicast=yes port=twisted pair
       resources: irq:123 memory:dff00000-dff1ffff

Here my syslog with the steps: after started the system, connection fine; when I started web navigation, the connection failed; I turned off and turned on the wired connection using Wired Settings (GUI); connection fine again; connection failed again in few seconds; I turned off and turned on the wired connection using Wired Settings (GUI) again; connection fine again; connection failed again in few seconds; I turned off wired connection, and turned on the wi-fi connection; wi-fi working fine during some minutes; I turned off wi-fi and turned on wired again; wired connection working fine till now. Here the syslog:

$ cat /var/log/syslog | grep NetworkManager
Feb 1 07:12:08 guari NetworkManager[928]: <info> [1549012328.4405] manager: NetworkManager state is now CONNECTED_GLOBAL
Feb 1 07:12:08 guari dbus-...

[Rodrigo Guariento (rodrigoguariento)]

I forgot... I'm using Ubuntu 18.04 LTS with all updates up to date.

[Jeremy Sanders (jeremysanders)]

Happens on my system too (18.04 with latest updates). Works fine in Windows 7. Motherboard is a Z370P D3. I've also tried a USB wifi adapter which had the same problem. A laptop also running Ubuntu 18.04 has no problem.

[root@serv ~]# sudo lshw -class network
  *-network
       description: Wireless interface
       product: Wireless 8260
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: wlp4s0
       version: 41
       serial: 34:13:e8:2e:88:67
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=4.15.0-45-generic firmware=34.0.1 latency=0 link=no multicast=yes wireless=IEEE 802.11
       resources: irq:133 memory:f7200000-f7201fff
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:07:00.0
       logical name: enp7s0
       version: 0c
       serial: e0:d5:5e:6b:b7:1d
       size: 100Mbit/s
       capacity: 1Gbit/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 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=off broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168g-2_0.0.1 02/06/13 ip=192.168.178.29 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
       resources: irq:18 ioport:d000(size=256) memory:f7100000-f7100fff memory:f2100000-f2103fff

[Russix (russix)]

My Ubuntu 18.04 randomly drops ethernet connection once per hour while in use. Reboot clears this issue.

 *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: enp4s0
       version: 06
       serial: 74:d4:35:b1:58:ff
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8168 driverversion=8.045.08-NAPI duplex=full ip=192.168.1.50 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
       resources: irq:25 ioport:de00(size=256) memory:fddff000-fddfffff memory:fddf8000-fddfbfff

[Stefan (ogrishmania)]

I'm on ubuntu 18.10 and I get random drops but if I disconnect and reconnect from the UI, it works. This isn't happening on my laptop which runs 18.04 also on cable connection.

-network
       description: Ethernet interface
       product: I211 Gigabit Network Connection
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:07:00.0
       logical name: enp7s0
       version: 03
       serial: e0:d5:5e:a0:55:0f
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi msix pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=igb driverversion=5.4.0-k duplex=full firmware=0. 6-1 ip=192.168.0.108 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
       resources: irq:38 memory:f7600000-f761ffff ioport:f000(size=32) memory:f7620000-f7623fff

[Tom Reynolds (tomreyn)]

Hi.

I am just a fellow Ubuntu user, but I am afraid this bug report is most likely not something anyone could solve, because so many different chipsets and issues are being discussed here (I assume this is also why no developers felt inclined to touch it so far).

I very much recommend that anyone still experiencing wireless issues should (look for, and if none exists) file a new bug against their wireless driver, and anyone with Ethernet issues should (look for, and if none exists) file a new bug against their Ethernet driver. Your drivers will usually be listed in the output of one of these commands:
lspci -knn
lsusb

You are also welcome to check back with community support to check whether a fix (or a workaround) is already available for your very issue, or just to get help with filing a bug report that is specific and can get handled more easily.
https://ubuntu.com/support/community-support

If TylerKinkade's issue (where both Wireless and Ethernet disconnect at the same time, on a now supported Ubuntu version) persists then it is more likely a platform (hardware / mainboard / ACPI / firmware) specific issue and should be treated as such, affecting Inspiron 5567 with this specific Ubuntu version (was 16.04.1 originally).

[jasiegel202 (jasiegel202)]

Manually entering the dns servers in the /etc/netplan yaml file worked for me. Perhaps a workaround would be to have the netplan file pull the dns servers from dhcp and then populate the yaml file?

See this fix article:

https://www.techrepublic.com/article/how-to-set-dns-nameservers-in-ubuntu-server-18-04/

[Kent Lion (klsu)]

Perhaps this can help: The symptoms I experience started sometime during the past year after an update (sudo apt update && sudo apt upgrade && sudo apt autoremove) are that some indefinite time (usually less than ½ hour) after I log on, the network disconnects without warning or error. Clicking on the up/down arrows of the indicator plugin and selecting the interface reconnects; however, I recently discovered that if, as soon as I log on, I select "Disconnect" and then select the adapter to reconnect, my session will be fine until I log out and back in again. So perhaps the bug is not with network-manager, samba or ifupdown, but with the logon process(es). My version is 18.04 and I'm using LiteDM GTK+. I haven't the faintest idea where to look for a cause that might be related to the logon process(s), but none of the very many "solutions" offered on various web pages I found on the problem have fixed it for me.

One other unexpected thing I've noticed is that in editing Ethernet connections (I don't used wireless enough to have noticed a problem), I can't edit (or delete) the one the system creates without first adding another (even if it's the same, e.g., enp2s0, with the same settings) and switching to it; however, after I did that the first time, and deleted the system's entry ("Wired connection 1", I think it was called), at some point the system added another entry, identical in every way to the one I had added, but called "Ifupdown (enp2s0)" and connects to that when I log on, not to the one I created (which I have since deleted, but the original problem still occurs, and disconnecting and reconnecting still prevents the random disconnect).

All of this applies to 2 other machines, also running up-to-date xubuntu 18.04, although on one of the other machines, the adapter is enp4s25. It also occurs with xubuntu and xfce sessions. I suspect the difficutly in finding the cause(s) is in part due to the confusing way samba/network settings are stored, with the same setting sometimes stored in different locations, entered via GUI or command line or both, possibly leading to conflicts.

I have spent many hours on this problem, and have only the above work-around, not a fix. Even though this problem has been around longer than 18.04, since 18.04, samba has clearly been broken, and until networking is as reliable and as easy to set up as in Windows, (x/l/k)ubuntu will not be suitable for typical home users.

[Fabrício Pereira (fabriciorsf)]

I uninstalled the network-manager, and started using the traditional Linux networking service with wpa_supplicant, but the problem continues.

The wifi connects and ping to my router IP. But seems to don't lookup over DNS correctly.

$ systemd-resolve --status
Global
         DNS Servers: 8.8.8.8
                      181.213.132.2
          DNSSEC NTA: 10.in-addr.arpa
                      16.172.in-addr.arpa
                      168.192.in-addr.arpa
                      17.172.in-addr.arpa
                      18.172.in-addr.arpa
                      19.172.in-addr.arpa
                      20.172.in-addr.arpa
                      21.172.in-addr.arpa
                      22.172.in-addr.arpa
                      23.172.in-addr.arpa
                      24.172.in-addr.arpa
                      25.172.in-addr.arpa
                      26.172.in-addr.arpa
                      27.172.in-addr.arpa
                      28.172.in-addr.arpa
                      29.172.in-addr.arpa
                      30.172.in-addr.arpa
                      31.172.in-addr.arpa
                      corp
                      d.f.ip6.arpa
                      home
                      internal
                      intranet
                      lan
                      local
                      private
                      test

Link 3 (wlp2s0)
      Current Scopes: none
       LLMNR setting: yes
MulticastDNS setting: no
      DNSSEC setting: no
    DNSSEC supported: no

Link 2 (enp1s0)
      Current Scopes: none
       LLMNR setting: yes
MulticastDNS setting: no
      DNSSEC setting: no
    DNSSEC supported: no

[Fabrício Pereira (fabriciorsf)]

I fixed in my network, but the problem was in router security settings.

Maybe the issue is in the security settings from the router, according to this link: [https://www.tp-link.com/us/support/faq/1533/][1]

In the router page, I discovered that the MAC address from my laptop was in a "Blocked DoS Host List", then I cleaned this list. Additionally, I increased the threshold values to 500.

[1]: https://www.tp-link.com/us/support/faq/1533/

[Michael Jensen (dyrby76)]

I have the same problem. On wired connection it constantly disconnects and connects.
I am running Ubuntu VM inside vmware with NAT network adapter setting.
It had been stable for a long time, but this last week has been incredible horrible.

Linux ubuntu 5.4.0-48-generic #52-Ubuntu SMP Thu Sep 10 10:58:49 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

Distributor ID: Ubuntu
Description: Ubuntu 20.04.1 LTS
Release: 20.04
Codename: focal

[Sebastian (sebastianhaselbeck)]

Eh... so on a fresh 22.04 installation (dell xps 13) my internet connection drops rougly every minute or so. It all worked fine on 21.04, the wifi hasn't changed.
This is horrible I have to say.... not sure if this is the right bug report for it. Any terminal output I should present?