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rated 0 times [  1] [ 0]  / answers: 1 / hits: 2552  / 2 Years ago, sun, july 3, 2022, 10:35:15

I have been using wireless seamlessly since I upgraded to Ubuntu 12.04 LTS. I did a botched attempt of installing Octave 3.6, at that time I was connected via Ethernet. I postponed that installation till later, but when I went home and tried to connect to a wireless network realized that Ubuntu is not detecting the wireless adapter..the blue light did not come up even after toggling hardware key. On booting into windows OS I was able to confirm that the adopter is working and I could connect to wireless network. Since then I have tried a number of things including re-installing BCM drivers as mentioned on other threads but nothing worked.



Here is the current status of my machine and wireless adapter....



 lspci -v 

0c:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g LP-PHY (rev 01)

Subsystem: Dell Wireless 1397 WLAN Mini-Card

Flags: bus master, fast devsel, latency 0, IRQ 3

Memory at f69fc000 (64-bit, non-prefetchable) [size=16K]

Capabilities: <access denied>
Kernel modules: ssb

lsmod

Module Size Used by

ip6table_filter 12815 0

ip6_tables 27864 1 ip6table_filter

iptable_filter 12810 0

ip_tables 27473 1 iptable_filter

x_tables 29891 4 ip6table_filter,ip6_tables,iptable_filter,ip_tables

vesafb 13844 1

parport_pc 32866 0

ppdev 17113 0

rfcomm 42651 0

lp 17799 0

parport 46562 3 parport_pc,ppdev,lp

bnep 18139 2

joydev 17693 0

bluetooth 205289 10 rfcomm,bnep

binfmt_misc 17540 1

nfsd 277884 2

nfs 356377 0

lockd 90326 2 nfsd,nfs

fscache 61568 1 nfs

auth_rpcgss 53380 2 nfsd,nfs

nfs_acl 12883 2 nfsd,nfs

sunrpc 241772 6 nfsd,nfs,lockd,auth_rpcgss,nfs_acl

psmouse 97485 0

serio_raw 13211 0

video 19596 0

compat 20099 3 rfcomm,bnep,bluetooth

e1000e 156715 0

lshw -C network

*-network UNCLAIMED

description: Network controller

product: BCM4312 802.11b/g LP-PHY

vendor: Broadcom Corporation

physical id: 0

bus info: pci@0000:0c:00.0

version: 01

width: 64 bits

clock: 33MHz

capabilities: pm msi pciexpress bus_master cap_list

configuration: latency=0

resources: memory:f69fc000-f69fffff

uname -a

Linux ubuntu 3.2.0-35-virtual #55-Ubuntu SMP Wed Dec 5 18:02:05 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

sudo modprobe wl
FATAL: Module wl not found.


Thanks in advance for any help.




  • UPDATE



After trying the answer below:
fsheikh@ubuntu:~$ sudo apt-get remove --purge bcmwl-kernel-source
Reading package lists... Done
Building dependency tree

Reading state information... Done
Package bcmwl-kernel-source is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.



fsheikh@ubuntu:~$ sudo apt-get install firmware-b43-lpphy-installer 
Reading package lists... Done
Building dependency tree
Reading state information... Done
firmware-b43-lpphy-installer is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

fsheikh@ubuntu:~$ sudo modprobe b43
WARNING: Error inserting bcma (/lib/modules/3.2.0-35-virtual/updates/cw-3.6 /bcma.ko): Unknown symbol in module, or unknown parameter (see dmesg)
WARNING: Error inserting cfg80211 (/lib/modules/3.2.0-35-virtual/updates/cw-3.6/cfg80211.ko): Unknown symbol in module, or unknown parameter (see dmesg)
WARNING: Error inserting mac80211 (/lib/modules/3.2.0-35-virtual/updates/cw-3.6/mac80211.ko): Unknown symbol in module, or unknown parameter (see dmesg)
FATAL: Error inserting b43 (/lib/modules/3.2.0-35-virtual/updates/cw-3.6/b43.ko): Unknown symbol in module, or unknown parameter (see dmesg)

More From » 12.04

 Answers
2

Never remember opting for virtual kernel with Ubuntu 12.04LTS. Coupled this with the fact that wireless was working before, I used synaptic to remove all virtual kernel headers, image and library packages. Guess what WiFI started working with no additional installation, etc. However it seems I have messed up my lightdm installation now but that is a subject for another thread.



Thanks chili555 for your help though.


[#33244] Monday, July 4, 2022, 2 Years  [reply] [flag answer]
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