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Message #09607
[Question #78742]: Lost all network connections after upgrade
New question #78742 on Ubuntu:
https://answers.launchpad.net/ubuntu/+question/78742
Had a pre-existing 9.04 Ubuntu install running, and everything was running fine. I normally connected via a wireless connection with my home network but also could connect via a wired connection. Hadn't run Update Manager for 3 days so I did just now and had it install everything. I requested a restart so I restarted.
Once it came up I got no network connections, wireless or wired. Near as I can tell it's not even recognizing any devices.
Not sure where to start....so here's some info that I've gathered you might need from other questions.
lspci -v | grep Broadcom
03:00.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX (rev 02)
0c:00.0 Network controller: Broadcom Corporation BCM4311 802.11b/g WLAN (rev 01)
lshw -C network
*-network UNCLAIMED
description: Network controller
product: BCM4311 802.11b/g WLAN
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:0c:00.0
version: 01
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: latency=0
*-network UNCLAIMED
description: Ethernet controller
product: BCM4401-B0 100Base-TX
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:03:00.0
version: 02
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list
configuration: latency=64
*-network
description: Ethernet interface
physical id: 2
logical name: pan0
serial: 6a:40:3e:37:63:36
capabilities: ethernet physical
configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A link=yes multicast=yes
ifconfig
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:256 errors:0 dropped:0 overruns:0 frame:0
TX packets:256 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:19584 (19.5 KB) TX bytes:19584 (19.5 KB)
pan0 Link encap:Ethernet HWaddr 6a:40:3e:37:63:36
inet6 addr: fe80::6840:3eff:fe37:6336/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:47 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:9876 (9.8 KB)
pan0:avahi Link encap:Ethernet HWaddr 6a:40:3e:37:63:36
inet addr:169.254.3.252 Bcast:169.254.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
sudo dhclient eth0
Internet Systems Consortium DHCP Client V3.1.1
Copyright 2004-2008 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/
SIOCSIFADDR: No such device
eth0: ERROR while getting interface flags: No such device
eth0: ERROR while getting interface flags: No such device
Bind socket to interface: No such device
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