*** This bug is a duplicate of bug 1654918 ***
https://bugs.launchpad.net/bugs/1654918
I am having a very similar problem on a Dell Inspiron desktop computer.
Had few connectivity issues with Ubuntu 16.10. Upgraded to 17.04, and
connectivity has been an almost constant problem.
When the computer is connecting to my Wifi, the speeds are extremely slow
(sometimes 1-60 MB/s), and I have to reboot the computer, disconnect then
reconnect the WiFi, etc.
I have also noticed that I now have a perpetual "virbr0" that will not shut
off, or allow itself to be deleted when editing the Network Connections.
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https://bugs.launchpad.net/bugs/1679535
Title:
! Cannot connect to internet in Ubuntu 17.04 (DNS Lookup fails)
Status in network-manager package in Ubuntu:
Confirmed
Bug description:
Hello,
I think this is a bug in the WIFI-driver or kernel.
Ubuntu is connected to the WIFI (router) box, but it cannot find DNS server
to get to the internet.
I have periodically *serious* problems with WIFI in Ubuntu 17.04.
The network icon shows "connected" to the router and internet, but browsers
and other attempts to get data report DNS error / or not connected.
This happens in all flavours of Ubuntu 17.04 (Ubuntu, Ubuntu GNOME
etc.).
Same laptop with Ubuntu 16.10 works flawlessly.
The connection works fine after I reboot (power off/on) the router box.
Then the bug may return (or may not return) after I turn on my laptop next
time.
This laptop is Toshiba Stellite P50 C.
The laptop has Intel Corporation Wireless 3165 (rev 81).
$ lspci -nnk | grep -iA2 net; uname -r; ls /lib/firmware/ | grep
'iwlwifi-7265d'
0d:00.0 Network controller [0280]: Intel Corporation Wireless 3165
[8086:3165] (rev 81)
Subsystem: Intel Corporation Dual Band Wireless AC 3165 [8086:4010]
Kernel driver in use: iwlwifi
--
0e:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd.
RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 0c)
Subsystem: Toshiba America Info Systems RTL8111/8168/8411 PCI Express Gigabit
Ethernet Controller [1179:f840]
Kernel driver in use: r8169
Kernel modules: r8169
4.11.0-041100rc4-generic
Ref: https://wiki.debian.org/iwlwifi
Restarting the network.manager does not help.
$ sudo service network-manager restart
Network manager connects (and sees) to the router, but cannot access internet.
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Please see also:
https://ubuntuforums.org/search.php?searchid=14761184
and
https://ubuntuforums.org/showthread.php?t=2356828
ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: network-manager 1.4.4-1ubuntu3
Uname: Linux 4.11.0-041100rc4-generic x86_64
ApportVersion: 2.20.4-0ubuntu2
Architecture: amd64
CurrentDesktop: GNOME
Date: Tue Apr 4 08:22:23 2017
IfupdownConfig:
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
InstallationDate: Installed on 2017-03-27 (8 days ago)
InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Beta amd64 (20170321)
IpRoute:
default via 192.168.1.1 dev wlp13s0 proto static metric 600
169.254.0.0/16 dev wlp13s0 scope link metric 1000
192.168.1.0/24 dev wlp13s0 proto kernel scope link src 192.168.1.34 metric
600
NetworkManager.conf:
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=false
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
wlp13s0 wifi connected /org/freedesktop/NetworkManager/Devices/2
Ubuntu-Linux-Network dda6e4cf-5cd9-4e01-b638-418985262413
/org/freedesktop/NetworkManager/ActiveConnection/5
enp14s0 ethernet unavailable /org/freedesktop/NetworkManager/Devices/1
-- -- --
lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/0
-- -- --
nmcli-nm:
RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW
WIFI WWAN-HW WWAN
running 1.4.4 connected started full enabled enabled
enabled enabled enabled
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