Wireless Connection Disappeared after Update

[VitaminBB]

Just restarted after updating my Ubuntu and the wireless connection has disappeared and doesnt seem to be working.

If I right click on the network icon and go to "edit connections" I have a wireless tab and it has the right information about my router it in but I dont see anyway to get it to connect wirelessly.

Help!

[VitaminBB]

Here is more info if it helps ...

Please, it looks like Ubuntu really dropped the ball this time and everyone is suffering over this bad update.

ifconfig

eth0 Link encap:Ethernet HWaddr 00:16:d3:49:30:fa
inet addr:192.168.1.102 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::216:d3ff:fe49:30fa/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:24666 errors:0 dropped:0 overruns:0 frame:0
TX packets:19259 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:32343655 (32.3 MB) TX bytes:2335490 (2.3 MB)
Interrupt:21 Base address:0x2000

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:41 errors:0 dropped:0 overruns:0 frame:0
TX packets:41 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2456 (2.4 KB) TX bytes:2456 (2.4 KB)

lspci

00:00.0 RAM memory: nVidia Corporation C51 Host Bridge (rev a2)
00:00.1 RAM memory: nVidia Corporation C51 Memory Controller 0 (rev a2)
00:00.2 RAM memory: nVidia Corporation C51 Memory Controller 1 (rev a2)
00:00.3 RAM memory: nVidia Corporation C51 Memory Controller 5 (rev a2)
00:00.4 RAM memory: nVidia Corporation C51 Memory Controller 4 (rev a2)
00:00.5 RAM memory: nVidia Corporation C51 Host Bridge (rev a2)
00:00.6 RAM memory: nVidia Corporation C51 Memory Controller 3 (rev a2)
00:00.7 RAM memory: nVidia Corporation C51 Memory Controller 2 (rev a2)
00:02.0 PCI bridge: nVidia Corporation C51 PCI Express Bridge (rev a1)
00:03.0 PCI bridge: nVidia Corporation C51 PCI Express Bridge (rev a1)
00:04.0 PCI bridge: nVidia Corporation C51 PCI Express Bridge (rev a1)
00:05.0 VGA compatible controller: nVidia Corporation C51 [GeForce Go 6100] (rev a2)
00:09.0 RAM memory: nVidia Corporation MCP51 Host Bridge (rev a2)
00:0a.0 ISA bridge: nVidia Corporation MCP51 LPC Bridge (rev a3)
00:0a.1 SMBus: nVidia Corporation MCP51 SMBus (rev a3)
00:0a.3 Co-processor: nVidia Corporation MCP51 PMU (rev a3)
00:0b.0 USB Controller: nVidia Corporation MCP51 USB Controller (rev a3)
00:0b.1 USB Controller: nVidia Corporation MCP51 USB Controller (rev a3)
00:0d.0 IDE interface: nVidia Corporation MCP51 IDE (rev f1)
00:10.0 PCI bridge: nVidia Corporation MCP51 PCI Bridge (rev a2)
00:10.1 Audio device: nVidia Corporation MCP51 High Definition Audio (rev a2)
00:14.0 Bridge: nVidia Corporation MCP51 Ethernet Controller (rev a3)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
04:05.0 Ethernet controller: Atheros Communications Inc. AR2413 802.11bg NIC (rev 01)
04:06.0 CardBus bridge: Texas Instruments PCIxx12 Cardbus Controller
04:06.2 Mass storage controller: Texas Instruments 5-in-1 Multimedia Card Reader (SD/MMC/MS/MS PRO/xD)

[VitaminBB]

Come on, anyone?

[Silent Warrior]

I don't know if I can be much help, but I have a similar issue. Note that my particular hardware is a Toshiba Satellite Pro L300-1CZ (Scandinavian naming). My problem is that if I update the kernel or libc6, my wireless (Realtek 8187B) goes down and stays down.

My home-brewn solution - which is really a cheap hack to avoid the problem entirely - is to run a working kernel AND an earlier version of the libc-packages. (In my case, running Mint 8: Kernel 2.6.31-14 and libc6[-etc] 2.10.1-0ubuntu15.) I noticed that trying to downgrade the libc-packages can be... dramatic, to say the least, so I really don't recommend that you try this - I didn't. A reinstall (and subseqently just not upgrading) would be much more painless.

Hm, let's just hold off on trying my 'fix' for the time being, until someone comes up with something that actually aims to solve the underlying problem.

[VitaminBB]

Its just amazing to me that Ubuntu can screw up this badly ...

[superprash2003]

post output of lshw -C network , have you looked under system->admin->hardware drivers for any wifi drivers

[VitaminBB]

When I look all thats listed is the Nvidia video driver.

Here is the output you asked for, thanks for helping btw.

*-network UNCLAIMED
description: Ethernet controller
product: AR2413 802.11bg NIC
vendor: Atheros Communications Inc.
physical id: 5
bus info: pci@0000:04:05.0
version: 01
width: 32 bits
clock: 33MHz
capabilities: cap_list
configuration: latency=168 maxlatency=28 mingnt=10
resources: memory:c3000000-c300ffff

[prabhjot]

Same here. Just finished restarting after installing updates, now i can't connect wirelessly on my Dell Inspiron 1525.
Hate to say it, but now I feel lucky I had windows 7 to fall back on.... (since it ain't possible to connect via LAN cable)

[prabhjot]

post output of lshw -C network , have you looked under system->admin->hardware drivers for any wifi drivers

Here's the output:

prabhjot@TRNSLTR-LPTP:~$ lshw -c net
WARNING: you should run this program as super-user.
  *-network
       description: Ethernet interface
       product: 88E8040 PCI-E Fast Ethernet Controller
       vendor: Marvell Technology Group Ltd.
       physical id: 0
       bus info: pci@0000:09:00.0
       logical name: eth0
       version: 12
       serial: 00:23:ae:19:3a:a0
       width: 64 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical
       configuration: broadcast=yes driver=sky2 driverversion=1.23 firmware=N/A latency=0 multicast=yes
       resources: irq:28 memory:fe8fc000-fe8fffff ioport:de00(size=256)
  *-network
       description: Wireless interface
       product: BCM4312 802.11b/g
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:0b:00.0
       logical name: eth2
       version: 01
       serial: 00:24:2b:6f:8f:03
       width: 64 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=wl0 driverversion=5.10.91.9 latency=0 multicast=yes wireless=IEEE 802.11
       resources: irq:17 memory:fe7fc000-fe7fffff

[Silent Warrior]

An update on my side:

I just tried the Lucid Alpha 2, and kernel 2.6.32-10 and libc 2.11 work for me. I hope the rest of you will have the same result, come release-day.