[Network not working] was Re: problemas de acceso al internet

NoOp glgxg at sbcglobal.net
Tue Jun 15 03:15:24 UTC 2010


On 06/14/2010 07:50 PM, Kjetil brinchmann Halvorsen wrote:
> see below.
> 
> On Sat, Jun 12, 2010 at 19:42, NoOp ...
>>
>> Sounds as if it might be a possible hardware problem. But first:
>>
>> 1. When you say that the network isn't working, are you speaking of a
>> hardwire or wifi connection?
>>
> 
>       Neither is working. But that wifi is not working is an old problem,
> the hardwire not working is new.

>>
>> 2. Please provide the output of:
>>
>> $ ifconfig
>>
> 
> Here it is:
> 
> kjetil at familien:~$ sudo ifconfig
> [sudo] password for kjetil:
> eth0      Link encap:Ethernet  HWaddr 00:1e:68:87:4a:4a
>           UP BROADCAST MULTICAST  MTU:1500  Metric:1
>           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)
>           Interrupt:27
> 
> 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:16436  Metric:1
>           RX packets:20 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:20 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:1200 (1.2 KB)  TX bytes:1200 (1.2 KB)
> 
> wlan0     Link encap:Ethernet  HWaddr 00:1f:e2:c9:3d:03
>           UP BROADCAST MULTICAST  MTU:1500  Metric:1
>           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)
> 
> kjetil at familien:~$
> 
> (but note ythat this is from today, when the machine has no internet cable,
> nor wifi. Not even non-working ones)

You'll need to do that with a wired cable connected.

>> 3. Have a look at:
>> https://help.ubuntu.com/community/WifiDocs/WirelessTroubleShootingGuide
>> and
>> https://help.ubuntu.com/community/NetworkManager0.7
>> to see if either of those help you.
>>
>> Will try.
>>
> 
> I should mention that I changed to wicd, which under ythe old ububnt 9.10
> seemt to be betyter. But on my 64bit partition I have the default, but same
> probkem.

I have both wicd and NM installed on my systems (wicd on this one). I'd
recommend troubleshooting the wired connection first & then move on to
wifi. Also pick the last partion & network manager that was working last.

1. Check the basic hardware symptoms first; when you plug in the
ethernet cable do you get that standard green light for the adapter etc?
Simple question, but worth checking.
2. When you check ifconfig after plugging in the cable do you show any
related messages via:

$ dmesg | tail

to indicate that the wired connection was detected? Something along the
lines of 'eth0: link up' or 'eth0: link down' when you pull the cable out?

Regardless, figure out which you wish to troubleshoot first (again
recommend the last working partition/config) & let's go from there. Be
sure to post back on which you are using (wicd or NM) as well.








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