Good Day! I have a IBM Thinkpad T43p(2668) Running Precise.I use Gnome shell as my desktop.Ubuntu runs like it was writen for this laptop and I have run Unbuntu on this laptop since Lucid.I have two network cards.The OEM is a Intel 2915abg.I have just upgraded my network to n and I use a Linksys ExpressCard WEC600N atapter.The issue I'm having is that when I first bootup or restart, network manager starts both cards and the first on the list is always the Intel card.This seems to cause a conflict and slows down the connection untill I turn off the OEM card.Then all is well untill need to restart and I have to do the same thing each time.I've tried to go it to the settings and pushed the "forget this netowrk"button.All that seem to do is make NM try to connect to all the other routers near by continuously untill I connect to mine and turn the Intell card off.Is there a way I can make NM only see my Linksys card? Short of removing my intel card? Thanks! Vince.

can you please post the output of: i think appending something like: in /etc/rc.local would suffice.

vince@vince-ThinkPad-T43:~$ ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:11:25:47:c7:a7
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:16

eth1 Link encap:Ethernet HWaddr 00:16:6f:c3:a2:ed
inet6 addr: fe80::216:6fff:fec3:a2ed/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:1733 errors:0 dropped:0 overruns:0 frame:0
TX packets:2012 errors:0 dropped:24 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:418583 (418.5 KB) TX bytes:296094 (296.0 KB)
Interrupt:21 Base address:0xa000 Memory:b4001000-b4001fff

eth2 Link encap:Ethernet HWaddr 00:22:6b:a1:8c:2a
inet addr:192.168.1.4 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::222:6bff:fea1:8c2a/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:240 errors:0 dropped:0 overruns:0 frame:3813
TX packets:348 errors:28 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:148686 (148.6 KB) TX bytes:66594 (66.5 KB)
Interrupt:16

irda0 Link encap:IrLAP HWaddr 00:00:00:00
NOARP MTU:2048 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:8
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

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:11167 errors:0 dropped:0 overruns:0 frame:0
TX packets:11167 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1407575 (1.4 MB) TX bytes:1407575 (1.4 MB)

vince@vince-ThinkPad-T43:~$ ipconfig -a
No command 'ipconfig' found, did you mean:
Command 'tpconfig' from package 'tpconfig' (universe)
Command 'iwconfig' from package 'wireless-tools' (main)
Command 'ifconfig' from package 'net-tools' (main)
ipconfig: command not found
vince@vince-ThinkPad-T43:~$

seems like you have 3 network cards; which is the one you want to disable ?

Three?
Is that because the broadcom(Linksys wpc 600n) is mimo? I'd like to disable the intel 2915abg.

i'm not sure which one relates to which network card on your system. run ifconfig ethx down (mite need to be sudo) on each of the eth adapters listed in your ifconfig output until you get the desired result. if your happy put it in your /etc/rc.local to make it permanent.

1 members found this post helpful.

Hey schneidz.Thanks for all your help.I was able to disable the OEM network card and now only my N adapter connects.And the changes have been made to my /etc/rc.local. Thanks a bunch!