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My boss asked me to install Ubuntu 12.04 LTS 32 bit on an old-ish laptop with an external US Robotics Wifi card and an internal ethernet card. I have gone through all the painful hops about installing the Wifi card driver, then suceeded getting wpa-supplicant to make it connect. Then I installed LUbuntu because I need to use Firefox on it. No Network manager or anything, as the graphic interface will only be invoked once a week and this laptop works as an "always on" database slave.

Now, I have several issues:

  1. I can only issue 1 ping before it completely stops communicating. That ping shall show 3 successful low latency replies then hangs till I CTRL-C it.
  2. Otherwise, I may succesfully open one (1) web page in Firefox and then it completely stops communicating.
  3. While I am at it: I need the Wlan to be the main interface. The internal ethernet interface gets only connected once a week. When it happens, it should be possible to telnet into it from other computers.

The first two issues seem related and also look like this previous question with the big difference I don't have Network Manager so I don't know where to look. That computer is terminal only with an afterwards attached thin graphic install. For the second issue, I don't know how to create the configuration to let it work. As of now both interfaces are unreachable from our LAN and I don't know if it's due to the first issues or not. In order to try debug the situation I have commented the built in ethernet adapter but I have not seen any benefit on the other. The wlan must be always on since boot and shall have a fixed IP address.

I am posting some of my (anonymized) configs below, if you are so kind to help me I'll post other configs as you feel fit to ask.

Thanks in advance.


/etc/hosts       localhost
#   lxsrv01.domain.tld  lxsrv01 dbserver     lxsrv01.domain.tld  lxsrv01 dbserver

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters


search domain.tld Home

root@lxsrv01:~# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface         UG    0      0        0 wlan0         UG    100    0        0 wlan0   U     0      0        0 eth0   U     0      0        0 wlan0

root@lxsrv01:~# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:0e:a6:aa:5b:be
          inet addr:  Bcast:  Mask:
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

lo        Link encap:Local Loopback
          inet addr:  Mask:
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:16 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1140 (1.1 KB)  TX bytes:1140 (1.1 KB)

wlan0     Link encap:Ethernet  HWaddr 00:c0:49:fc:db:3f
          inet addr:  Bcast:  Mask:
          inet6 addr: fe80::2c0:49ff:fefc:db3f/64 Scope:Link
          RX packets:14799 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4043 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:7354838 (7.3 MB)  TX bytes:440079 (440.0 KB)

root@lxsrv01:~# grep -i "wlan" /var/log/dmesg
[   14.360963] b43-phy0: Broadcom 4318 WLAN found (core revision 9)
[   17.601221] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   18.912230] wlan0: authenticate with 74:88:8b:84:e8:ad
[   18.912550] wlan0: send auth to 74:88:8b:84:e8:ad (try 1/3)
[   18.914068] wlan0: authenticated
[   18.916034] wlan0: associate with 74:88:8b:84:e8:ad (try 1/3)
[   18.920557] wlan0: RX AssocResp from 74:88:8b:84:e8:ad (capab=0x411 status=0
[   18.921071] wlan0: associated
[   18.921268] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
share|improve this question
You can install Network Manager and see if that helps –  LnxSlck Nov 26 '13 at 9:39
The computer is meant to work 99% without graphical UI (only invoked for maintenance), it has to establish VPN connections and other things since boot. –  Dario Fumagalli Nov 26 '13 at 10:27
I have found a solution that should fix some if not all of those issues. If it could be of any use I might post an howto. –  Dario Fumagalli Nov 28 '13 at 11:59
I also have this problem! –  Per Alexandersson Nov 27 '14 at 22:20

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