I use an old Dell Inspiron 9400 laptop and have used Ubuntu for a couple of years.
I upgraded through each distro since version 8.04 with no previous hang-ups.
However, when I attempt to up-grade from distro 10.10 to 11.04; first by downloading the ISO and burning it to disk and then via the Up-grade command in Synaptic Package Manager, the result is the same.
NO WIRELESS.
Each time the installation is complete, the new system initiates the 'Additional Drivers.' I download and activate the STA Wireless Drivers, which contain Broadcom 802.11 Linux STA wireless driver for use with Broadcom's BCM4311-, BCM4312-, BCM4321-, andBCM4322-based hardware.
I re-boot the computer.
NO WIRELESS.

Do you have any suggestions?

Thanks.

laf11540,

Can you provide the output of iwconfig and ifconfig? I had this happen in ONE particular instance, and all I had to do was run sudo ifconfig wlan 0 up. Also, if you are running the GNOME GUI, make sure you right click on the wireless icon in the toolbar next to the date, and select "ENABLE WIRELESS". That was another accidental failure that I had... during an upgrade.

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Open software center or synaptic, Type bcm into the search bar. If it shows you as using BCM-Kernal-Source. Delete that and get the B43-driver and cutter. I have done a few 11.04 installs where I have had to do this. I am using broadcom as well. Just search on google for 'b43 linux ubuntu no wifi' and you should get a few tutorials on how to do it.

I don't really know why, But I haven't seen any broadcom work with ubuntu 11.04 (or Zorin, which is built on ubuntu) even though the drivers are provided by developers. But as I said before, I have installed this on a few and it has done the trick every time. On my system,my girlfriends, my cousins, and my aunts ... Hope you get it going, best of luck.

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Thanks for the reply.
Still working with ver. 10.10, but saving all correspondence before attempting up-grade to ver. 11.04. Per your request, here's the "iwconfig" and "ifconfig":


laf@laf-MP061:~$ iwconfig

lo no wireless extensions.



eth1 IEEE 802.11 Access Point: Not-Associated

Link Quality:5 Signal level:212 Noise level:199

Rx invalid nwid:0 invalid crypt:0 invalid misc:0



eth0 no wireless extensions.



laf@laf-MP061:~$ ifconfig

eth0 Link encap:Ethernet HWaddr 00:14:22:f5:35:4b

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:17



eth1 Link encap:Ethernet HWaddr 00:16:ce:40:4f:46

inet addr:192.168.1.5 Bcast:192.168.1.255 Mask:255.255.255.0

inet6 addr: fe80::216:ceff:fe40:4f46/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:119915 errors:0 dropped:0 overruns:0 frame:3414

TX packets:94225 errors:172 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:140084409 (140.0 MB) TX bytes:17218378 (17.2 MB)

Interrupt:17 Base address:0xc000



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:830 errors:0 dropped:0 overruns:0 frame:0

TX packets:830 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:66076 (66.0 KB) TX bytes:66076 (66.0 KB)



Hope this is what your requested.

Thanks.

Thank you, thank you - - - IT WORKED!!!

Glad to hear it ... On the top right of this thread you will see a link that says 'Mark as Solved' ... Doing that will let others know it is done and it may help them. Glad you got interweb

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