Laptop automatically connects but no Desktop will?

linus72 · 08-05-2011, 07:26 PM

The situation is that I have a old laptop using a PCMCIA card and a desktop using a wired connection and I have moved recently to a new house.
I have Comcast Cable and Internet.

The laptop has always auto-connected and is running ArchBang.
My desktop PC has many distros on it and yet none of them can seem to connect to the wired modem?!

Not really sure what to do or how to fix it?

Here is some output

ifconfig-

Code:

eth0      Link encap:Ethernet  HWaddr 00:10:A4:F4:9A:07  
          inet addr:76.123.13.31  Bcast:255.255.255.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:576  Metric:1
          RX packets:14158 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3461 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:2518227 (2.4 Mb)  TX bytes:436543 (426.3 Kb)
          Interrupt:11 Base address:0x1000 

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:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

arp-

Code:

Address                  HWtype  HWaddress           Flags Mask            Iface
76.123.13.1              ether   00:0e:d6:bd:bc:ce   C                     eth0

Any ideas why not even a livecd will connect using the desktop?
Note the desktop worked fine before I moved and almost all distros on it use wicd or some other way to auto-connect.
Thanks for any help

frankbell · 08-05-2011, 07:40 PM

Code:

eth0      Link encap:Ethernet  HWaddr 00:10:A4:F4:9A:07  
          inet addr:76.123.13.31  Bcast:255.255.255.255  Mask:255.255.255.0

According to whois, 76.123.13.1 is a Comcast address.

Code:

 $ whois 76.123.13.1

whois 76.123.13.1
[Querying whois.arin.net]
[whois.arin.net]
#
# Query terms are ambiguous.  The query is assumed to be:
#     "n 76.123.13.1"
#
# Use "?" to get help.
#

#
# The following results may also be obtained via:
# http://whois.arin.net/rest/nets;q=76.123.13.1?showDetails=true&showARIN=true
#

Comcast Cable Communications, Inc. RICHMOND-17 (NET-76-123-0-0-1) 76.123.0.0 - 76.123.63.255
American Registry for Internet Numbers NET76 (NET-76-0-0-0-0) 76.0.0.0 - 76.255.255.255
Comcast Cable Communications, Inc. JUMPSTART-5 (NET-76-96-0-0-1) 76.96.0.0 - 76.127.255.255

That would lead me to think that you are connecting in some fashion.

It would be helpful to know more of the topology of your network, such as whether there is a router.

linus72 · 08-05-2011, 07:56 PM

thanks for answering Frankbell.
I am writing all this from the lappy which connects.
There is no router, just a comcast cable modem and I use the same wire to hook up either the lappy or the desktop, but only the lappy connects.
it is weird.

how to troubleshoot this?
also, I had windows XP desktop hooked up to same connection and it wouldn't connect either...