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Stanislav Jirák
Asked: 2018-01-07 02:02:45 +0800 CST

Can't connect to the Internet, but can to a router

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I have Ubuntu 17.10 and see a question mark in place of wireless symbol in the top main bar. I can't connect to the Internet, however, I can connect to my router. Internet connection on my Windows notebook works fine.

I've tried:

sudo service network-manager restart
sudo rfkill unblock all

Here's lshw:

sudo lshw -class network
  *-network                 
       description: Ethernet interface
       product: 82579LM Gigabit Network Connection
       vendor: Intel Corporation
       physical id: 19
       bus info: pci@0000:00:19.0
       logical name: enp0s25
       version: 04
       serial: 3c:97:0e:c1:3b:29
       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=0.13-3 latency=0 link=no multicast=yes port=twisted pair
       resources: irq:31 memory:f2500000-f251ffff memory:f253b000-f253bfff ioport:6080(size=32)
  *-network
       description: Wireless interface
       product: Centrino Advanced-N 6205 [Taylor Peak]
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlp3s0
       version: 34
       serial: a4:4e:31:48:ff:18
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=4.13.0-21-generic firmware=18.168.6.1 ip=192.168.0.100 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:32 memory:f1c00000-f1c01fff
  *-network DISABLED
       description: Ethernet interface
       physical id: 2
       logical name: wwp0s20u4i6
       serial: ae:99:db:a9:c7:96
       capabilities: ethernet physical
       configuration: broadcast=yes driver=cdc_mbim driverversion=22-Aug-2005 firmware=CDC MBIM link=no multicast=yes

Any help would be aprreciated.

14.04

1 Answers

  1. It's possible that you're not getting the default gateway set to your router. Try looking at the output of route -n and see what's listed for the destination 0.0.0.0.

    It's also possible that you're not getting DNS. You might try to do an nslookup on some known URL to see if you get anything.

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