*** This bug is a duplicate of bug 1654918 ***
https://bugs.launchpad.net/bugs/1654918
Try this. Very simple fix.
https://www.youtube.com/watch?v=wjS4eBnR3q0&list=PL4fAeCL2jtycl0gPZD8WFPn9caOPidMqs&index=2
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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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