Ubuntu

Server not found Lubuntu 16.04 TP Link Mr6400 Inspiron 1525

Asked by John Sanz

I have an old Dell Inspiron 1525 32 bit running Ubuntu 14.04 using Firefox via a very slow landline broadband so I bought a TP Link MR6400 sim card enabled router. All went successfully until I installed Lubuntu 16.04 after which although the laptop can see the TP Link, I only get "Server not found" whenever I try to access a website. I have also installed Chromium but get the same results.

If, however, I return to the old landline router, then the laptop can access the web as before. Further, another old laptop running Windows 10 and Firefox can access the TP Link successfully.

How can I get the Dell and the TP LInk to communicate properly? Or should I just buy more RAM and replace Lubuntu with Ubuntu 16.04?

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actionparsnip (andrew-woodhead666) said : 		#1

If you run:

ifconfig

Do you see an IP address on the interface? If so can you ping 8.8.8.8 OK?

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John Sanz (farmerjohn) said : 		#2

My earlier reply seems to have vanished into the ether, so here's hoping.
This are the results using the TP Link MR6400 router wired to a TP Link WA901ND Wireless Access point as there is a very thick stone wall between the router and the Dell.

john@john-Inspiron-1525:~$ ifconfig
enp9s0 Link encap:Ethernet HWaddr 00:21:9b:cc:ef:ce
          UP BROADCAST MULTICAST MTU:1500 Metric:1
          RX packets:24326 errors:0 dropped:0 overruns:0 frame:0
          TX packets:24492 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:22568741 (22.5 MB) TX bytes:2881771 (2.8 MB)
          Interrupt:16

lo Link encap:Local Loopback
          inet addr:127.0.0.1 Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING MTU:65536 Metric:1
          RX packets:6600 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6600 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1
          RX bytes:584127 (584.1 KB) TX bytes:584127 (584.1 KB)

wlp11s0 Link encap:Ethernet HWaddr 00:1f:3c:a8:71:93
          inet addr:192.168.1.104 Bcast:192.168.1.255 Mask:255.255.255.0
          inet6 addr: fe80::f2e9:90f7:e6fa:cac4/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:768 errors:0 dropped:0 overruns:0 frame:0
          TX packets:434 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:237699 (237.6 KB) TX bytes:49061 (49.0 KB)

john@john-Inspiron-1525:~$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=55 time=224 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=55 time=144 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=55 time=166 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=55 time=85.9 ms

For comparison, here are the results using the (wired) landline broadband via a BT Hub 3.0

john@john-Inspiron-1525:~$ ifconfig
enp9s0 Link encap:Ethernet HWaddr 00:21:9b:cc:ef:ce
          inet addr:192.168.1.64 Bcast:192.168.1.255 Mask:255.255.255.0
          inet6 addr: fe80::4547:e044:5e1d:367d/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:25196 errors:0 dropped:0 overruns:0 frame:0
          TX packets:25345 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:22770922 (22.7 MB) TX bytes:2977265 (2.9 MB)
          Interrupt:16

lo Link encap:Local Loopback
          inet addr:127.0.0.1 Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING MTU:65536 Metric:1
          RX packets:6770 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6770 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1
          RX bytes:599637 (599.6 KB) TX bytes:599637 (599.6 KB)

wlp11s0 Link encap:Ethernet HWaddr 00:1f:3c:a8:71:93
          inet addr:192.168.1.104 Bcast:192.168.1.255 Mask:255.255.255.0
          inet6 addr: fe80::f2e9:90f7:e6fa:cac4/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:953 errors:0 dropped:0 overruns:0 frame:0
          TX packets:561 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:293255 (293.2 KB) TX bytes:62155 (62.1 KB)

john@john-Inspiron-1525:~$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=57 time=21.0 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=57 time=20.6 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=57 time=20.7 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=57 time=21.4 ms
64 bytes from 8.8.8.8: icmp_seq=5 ttl=57 time=20.2 ms

I hope that this can help solve the problem.

John

Revision history for this message
Launchpad Janitor (janitor) said : 		#3

This question was expired because it remained in the 'Open' state without activity for the last 15 days.