Ubuntu 11.04 - Wireless won't work - WHY?
 

I just upgraded to Ubuntu 11.04 on my laptop. Now, my wireless network doesn't work. I've tried everything I can think of.
My laptop is a "Lenovo 3000 C200" (serial number: "type 8922 2FU"
Can anybody help?

In the terminal type in

and post the output in a code box for us to look at.

Does your Wired connection work? If it doesn't it could be a DNS issue. If it does it could be a kernel/driver issue.

EDIT: Read this page from Ubuntu on wireless troubleshooting and work through the instructions contained therein

If you do lspci as k3lt01 mentions but with a -v after it (so do: "lspci -v" and look for "Wireless" or "Network") then it'll list all of the installed hardware. When it comes to Ubuntu I'd guess it's a driver issue which can be easy sometimes to fix.

I have the same issue, did as was asked and I have:
Wired Network works fine, but in the Desktop under Wireless Networks it shows "device not managed". I am using a SMC EZ Connect model SMC2635W and the Link/Act light is on.

Edit:
I forgot to mention that it worked perfectly with Ubuntu 10.10, when I did the "do-release-upgrade" when it rebooted after being finished Wireless was dead.

Hi mytinytown. If you were using Debian I'd suggest you re-install the Ralink firmware but from memory (I may be wrong) Ubuntu has it in the kernel to begin with. Have you tried booting to an older kernel, the one from 10.10, and see if your wireless works with that?

When I tried to boot my Kubuntu 11.04 with kernel from 10.10 I got a screen with few lines of text on the screen and then full stop.

OK Here comes my lack of Linux skills. How do you boot in an older kernel? Also, it might have removed those during the upgrade. I remember doing it before, but I believe I was using Fedora Core 2 when it was first released.

You should have an option to boot older kernel when you have your GRUB screen. Your latest kernel is default, on the top. Just below it couple of lines should be older kernels. It is good idea to keep 1-2 previous kernels available just in case like this.

OK This is silly.

My issue was I had some information in the /etc/network/interface file and once I removed all that, only having the auto lo info, it cleared up all issues with the wireless.

Thank you for the help!!!

Same Type Of Problem
 

Hi Im new to this and have a similar problem i loaded 11.04 on an old dell 600m and had the wireless problem so i found an ubuntu forum with instructions to install packages and i lost my Ethernet and still don't have wireless in a terminal i typed lspci and i get these results

d600m@d600m-Inspiron-600m:~$ lspci
00:00.0 Host bridge: Intel Corporation 82855PM Processor to I/O Controller (rev 03)
00:01.0 PCI bridge: Intel Corporation 82855PM Processor to AGP Controller (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 01)
00:1d.1 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 01)
00:1d.2 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 (rev 01)
00:1d.7 USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller (rev 01)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 81)
00:1f.0 ISA bridge: Intel Corporation 82801DBM (ICH4-M) LPC Interface Bridge (rev 01)
00:1f.1 IDE interface: Intel Corporation 82801DBM (ICH4-M) IDE Controller (rev 01)
00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 01)
00:1f.6 Modem: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Modem Controller (rev 01)
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon RV250 [Mobility FireGL 9000] (rev 02)
02:00.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX (rev 02)
02:01.0 CardBus bridge: O2 Micro, Inc. OZ711EC1 SmartCardBus Controller (rev 20)
02:01.1 CardBus bridge: O2 Micro, Inc. OZ711EC1 SmartCardBus Controller (rev 20)
02:03.0 Network controller: Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller (rev 02)
d600m@d600m-Inspiron-600m:~$


Help Whats Next Thanks For Your Help Guys

lspci -v results
 

Hi Again here is the aspci -v results

lspci -v results

d600m@d600m-Inspiron-600m:~$ lspci -v
00:00.0 Host bridge: Intel Corporation 82855PM Processor to I/O Controller (rev 03)
Subsystem: Dell Device 01be
Flags: bus master, fast devsel, latency 0
Memory at e0000000 (32-bit, prefetchable) [size=128M]
Capabilities: <access denied>
Kernel driver in use: agpgart-intel

00:01.0 PCI bridge: Intel Corporation 82855PM Processor to AGP Controller (rev 03) (prog-if 00 [Normal decode])
Flags: bus master, 66MHz, fast devsel, latency 32
Bus: primary=00, secondary=01, subordinate=01, sec-latency=32
I/O behind bridge: 0000c000-0000cfff
Memory behind bridge: fc000000-fdffffff
Prefetchable memory behind bridge: e8000000-efffffff
Kernel modules: shpchp

00:1d.0 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 01) (prog-if 00 [UHCI])
Subsystem: Dell Device 01be
Flags: bus master, medium devsel, latency 0, IRQ 11
I/O ports at bf80 [size=32]
Kernel driver in use: uhci_hcd

00:1d.1 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 01) (prog-if 00 [UHCI])
Subsystem: Dell Device 01be
Flags: bus master, medium devsel, latency 0, IRQ 11
I/O ports at bf40 [size=32]
Kernel driver in use: uhci_hcd

00:1d.2 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 (rev 01) (prog-if 00 [UHCI])
Subsystem: Dell Device 01be
Flags: bus master, medium devsel, latency 0, IRQ 11
I/O ports at bf20 [size=32]
Kernel driver in use: uhci_hcd

00:1d.7 USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller (rev 01) (prog-if 20 [EHCI])
Subsystem: Dell Device 01be
Flags: bus master, medium devsel, latency 0, IRQ 11
Memory at f4fffc00 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci_hcd

00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 81) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=0a, sec-latency=32
I/O behind bridge: 0000d000-0000efff
Memory behind bridge: f6000000-fbffffff
Prefetchable memory behind bridge: 40000000-47ffffff
Kernel modules: shpchp

00:1f.0 ISA bridge: Intel Corporation 82801DBM (ICH4-M) LPC Interface Bridge (rev 01)
Flags: bus master, medium devsel, latency 0
Kernel modules: iTCO_wdt, intel-rng

00:1f.1 IDE interface: Intel Corporation 82801DBM (ICH4-M) IDE Controller (rev 01) (prog-if 8a [Master SecP PriP])
Subsystem: Dell Device 01be
Flags: bus master, medium devsel, latency 0, IRQ 11
I/O ports at 01f0 [size=8]
I/O ports at 03f4 [size=1]
I/O ports at 0170 [size=8]
I/O ports at 0374 [size=1]
I/O ports at bfa0 [size=16]
Memory at 48000000 (32-bit, non-prefetchable) [size=1K]
Kernel driver in use: ata_piix

00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 01)
Subsystem: Dell Device 01be
Flags: bus master, medium devsel, latency 0, IRQ 5
I/O ports at b800 [size=256]
I/O ports at bc40 [size=64]
Memory at f4fff800 (32-bit, non-prefetchable) [size=512]
Memory at f4fff400 (32-bit, non-prefetchable) [size=256]
Capabilities: <access denied>
Kernel driver in use: Intel ICH
Kernel modules: snd-intel8x0

00:1f.6 Modem: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Modem Controller (rev 01) (prog-if 00 [Generic])
Subsystem: Conexant Systems, Inc. D480 MDC V.9x Modem
Flags: medium devsel, IRQ 5
I/O ports at b400 [size=256]
I/O ports at b080 [size=128]
Capabilities: <access denied>
Kernel modules: snd-intel8x0m

01:00.0 VGA compatible controller: ATI Technologies Inc Radeon RV250 [Mobility FireGL 9000] (rev 02) (prog-if 00 [VGA controller])
Subsystem: Dell Device 01be
Flags: bus master, VGA palette snoop, stepping, 66MHz, medium devsel, latency 32, IRQ 11
Memory at e8000000 (32-bit, prefetchable) [size=128M]
I/O ports at c000 [size=256]
Memory at fcff0000 (32-bit, non-prefetchable) [size=64K]
[virtual] Expansion ROM at fc000000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: radeon
Kernel modules: radeon, radeonfb

02:00.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX (rev 02)
Subsystem: Dell Device 8127
Flags: bus master, fast devsel, latency 32, IRQ 11
Memory at faffe000 (32-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel modules: b44

02:01.0 CardBus bridge: O2 Micro, Inc. OZ711EC1 SmartCardBus Controller (rev 20)
Subsystem: Dell Device 01be
Flags: bus master, stepping, slow devsel, latency 168, IRQ 11
Memory at f6000000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=02, secondary=03, subordinate=06, sec-latency=176
Memory window 0: 40000000-43fff000 (prefetchable)
Memory window 1: 4c000000-4ffff000
I/O window 0: 0000d000-0000d0ff
I/O window 1: 0000d400-0000d4ff
16-bit legacy interface ports at 0001
Kernel driver in use: yenta_cardbus
Kernel modules: yenta_socket

02:01.1 CardBus bridge: O2 Micro, Inc. OZ711EC1 SmartCardBus Controller (rev 20)
Subsystem: Dell Device 01be
Flags: bus master, stepping, slow devsel, latency 168, IRQ 11
Memory at f6001000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=02, secondary=07, subordinate=0a, sec-latency=176
Memory window 0: 44000000-47fff000 (prefetchable)
Memory window 1: 50000000-53fff000
I/O window 0: 0000d800-0000d8ff
I/O window 1: 0000dc00-0000dcff
16-bit legacy interface ports at 0001
Kernel driver in use: yenta_cardbus
Kernel modules: yenta_socket

02:03.0 Network controller: Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller (rev 02)
Subsystem: Dell Wireless 1370 WLAN Mini-PCI Card
Flags: bus master, fast devsel, latency 32, IRQ 11
Memory at faffc000 (32-bit, non-prefetchable) [size=8K]
Kernel modules: ssb

d600m@d600m-Inspiron-600m:~$

Rudfal,
You need to download bcmwl-kernel-source_5.60.48.36+bdcom-0ubuntu5_i386

This is the OLDER version of the broadcom wireless firmware. There is a problem with the newer version included in ubuntu 11.04

Looks like you can get it from here:
http://packages.ubuntu.com/maverick/...ource/download

So first I'd recommend going into synaptic package manager and find your bcmwl kernel source package that is installed and completely uninstall it. Then install the package I listed above. If you don't have internet on that machine simply download it somewhere else and then transfer it via USB and double click it.

You may need to reboot, and you may also need to go into 'additional drivers' and activate it and reboot again before it actually works.

Sorry, what is the issue in 11.04 apart that it is blacklisted by default?
http://linuxblog.darkduck.com/2011/0...104-unity.html

darkduck:

I don't know what the specific problem is. I just know that my broadcom devices wouldn't work, and from searching around I saw that many others had this same problem. The solution was just to use the older package from Ubuntu 10.10.

newb123:
My solution was to use method described here. I believe it uses same driver, not older version. But it has to be de-blacklisted.