Thread: wifi stopped working after recent upgrade..

hi,

have dell 1501 has been upgraded 10.10 11.04. working okay. , user ran upgrade recently. subsequently wifi has mysteriously stopped working. connects okay if 1 plugs directly router wifi seems have stopped working.

mini 9 connects fine netgear wifi router using wireless.

when run system tests networking errors...
"root not find def gateway info /proc"
"root not find default gateway running route"

here output diagnostic commands.

note:this similar post titled "wi-fi dead?" output not quite same...

lauren@lauren-inspiron-1501:~$ iwconfig
lo no wireless extensions.

eth0 no wireless extensions.

lauren@lauren-inspiron-1501:~$ iwconfig wlan0
wlan0 no such device


lauren@lauren-inspiron-1501:~$ sudo lshw -c network
*-network
description: network controller
product: bcm4311 802.11b/g wlan
vendor: broadcom corporation
physical id: 0
bus info: pci@0000:05:00.0
version: 01
width: 32 bits
clock: 33mhz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=b43-pci-bridge latency=0
resources: irq:18 memory:c0200000-c0203fff
*-network
description: ethernet interface
product: bcm4401-b0 100base-tx
vendor: broadcom corporation
physical id: 0
bus info: pci@0000:08:00.0
logical name: eth0
version: 02
serial: 00:19:b9:57:14:eb
size: 100mbit/s
capacity: 100mbit/s
width: 32 bits
clock: 33mhz
capabilities: pm bus_master cap_list ethernet physical mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=b44 driverversion=2.0 duplex=full ip=192.168.10.74 latency=64 link=yes multicast=yes port=twisted pair speed=100mbit/s
resources: irq:21 memory:c0300000-c0301fff
lauren@lauren-inspiron-1501:~$




lauren@lauren-inspiron-1501:~$ iwlist scan
lo interface doesn't support scanning.

eth0 interface doesn't support scanning.

lauren@lauren-inspiron-1501:~$



lauren@lauren-inspiron-1501:~$ lsb_release -d
description: ubuntu 11.04
lauren@lauren-inspiron-1501:~$



lauren@lauren-inspiron-1501:~$ sudo /etc/init.d/networking restart
* running /etc/init.d/networking restart deprecated because may not enable again interfaces
* reconfiguring network interfaces... ignoring unknown interface eth0=eth0.
[ ok ]
lauren@lauren-inspiron-1501:~$


observe: output not quite same other thread.

please advise.

thank you.

hi,

marked thread solved because issue discussed in sticky thread here http://ubuntuforums.org/showthread.php?t=1604868


have not got wifi work yet..

Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Networking & Wireless [SOLVED] wifi stopped working after recent upgrade..

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